openperf/abstract-machine
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feat: make compatible with openperf

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This commit is contained in:
xinyangli 2024-11-09 10:56:27 +08:00
parent a7b830fedd
commit 5fee5aad38
Signed by: xin
SSH key fingerprint: SHA256:UU5pRTl7NiLFJbWJZa+snLylZSXIz5rgHmwjzv8v4oE
79 changed files with 3943 additions and 274 deletions
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50
Makefile
View file

@ -2,7 +2,8 @@
### *Get a more readable version of this Makefile* by `make html` (requires python-markdown)
html:
cat Makefile | sed 's/^\([^#]\)/ \1/g' | markdown_py > Makefile.html
# cat Makefile | sed 's/^\([^#]\)/ \1/g' | markdown_py > Makefile.html
cat Makefile | markdown_py > Makefile.html
.PHONY: html
## 1. Basic Setup and Checks
@ -66,21 +67,21 @@ LINKAGE = $(OBJS) \
## 3. General Compilation Flags
### (Cross) compilers, e.g., mips-linux-gnu-g++
AS = $(CROSS_COMPILE)gcc
CC = $(CROSS_COMPILE)gcc
CXX = $(CROSS_COMPILE)g++
LD = $(CROSS_COMPILE)ld
AR = $(CROSS_COMPILE)ar
OBJDUMP = $(CROSS_COMPILE)objdump
OBJCOPY = $(CROSS_COMPILE)objcopy
READELF = $(CROSS_COMPILE)readelf
CC ?= $(CROSS_COMPILE)gcc
AS := $(CC)
CXX ?= $(CROSS_COMPILE)g++
LD ?= $(CROSS_COMPILE)ld
AR ?= $(CROSS_COMPILE)ar
OBJDUMP ?= $(CROSS_COMPILE)objdump
OBJCOPY ?= $(CROSS_COMPILE)objcopy
READELF ?= $(CROSS_COMPILE)readelf
### Compilation flags
INC_PATH += $(WORK_DIR)/include $(addsuffix /include/, $(addprefix $(AM_HOME)/, $(LIBS)))
INCFLAGS += $(addprefix -I, $(INC_PATH))
ARCH_H := arch/$(ARCH).h
CFLAGS += -O2 -MMD -Wall -Werror $(INCFLAGS) \
CFLAGS += -lm -g -O3 -MMD -Wall $(INCFLAGS) \
-D__ISA__=\"$(ISA)\" -D__ISA_$(shell echo $(ISA) | tr a-z A-Z)__ \
-D__ARCH__=$(ARCH) -D__ARCH_$(shell echo $(ARCH) | tr a-z A-Z | tr - _) \
-D__PLATFORM__=$(PLATFORM) -D__PLATFORM_$(shell echo $(PLATFORM) | tr a-z A-Z | tr - _) \
@ -88,14 +89,20 @@ CFLAGS += -O2 -MMD -Wall -Werror $(INCFLAGS) \
-fno-asynchronous-unwind-tables -fno-builtin -fno-stack-protector \
-Wno-main -U_FORTIFY_SOURCE -fvisibility=hidden
CXXFLAGS += $(CFLAGS) -ffreestanding -fno-rtti -fno-exceptions
ASFLAGS += -MMD $(INCFLAGS)
LDFLAGS += -z noexecstack $(addprefix -T, $(LDSCRIPTS))
ASFLAGS += $(INCFLAGS)
LDFLAGS += -z noexecstack
## 4. Arch-Specific Configurations
### Paste in arch-specific configurations (e.g., from `scripts/x86_64-qemu.mk`)
-include $(AM_HOME)/scripts/$(ARCH).mk
### Fall back to native gcc/binutils if there is no cross compiler
ifeq ($(wildcard $(shell which $(CC))),)
$(info # $(CC) not found; fall back to default gcc and binutils)
CROSS_COMPILE := riscv64-unknown-linux-gnu-
endif
## 5. Compilation Rules
### Rule (compile): a single `.c` -> `.o` (gcc)
@ -123,19 +130,14 @@ $(LIBS): %:
@$(MAKE) -s -C $(AM_HOME)/$* archive
### Rule (link): objects (`*.o`) and libraries (`*.a`) -> `IMAGE.elf`, the final ELF binary to be packed into image (ld)
$(IMAGE).elf: $(LINKAGE) $(LDSCRIPTS)
@echo \# Creating image [$(ARCH)]
$(IMAGE).elf: $(OBJS) $(LIBS)
@echo + LD "->" $(IMAGE_REL).elf
ifneq ($(filter $(ARCH),native),)
@$(CXX) -o $@ -Wl,--whole-archive $(LINKAGE) -Wl,-no-whole-archive $(LDFLAGS_CXX)
else
@$(LD) $(LDFLAGS) -o $@ --start-group $(LINKAGE) --end-group
endif
@$(LD) $(LDFLAGS) -o $(IMAGE).elf --start-group $(LINKAGE) --end-group
### Rule (archive): objects (`*.o`) -> `ARCHIVE.a` (ar)
$(ARCHIVE): $(OBJS)
@echo + AR "->" $(shell realpath $@ --relative-to .)
@$(AR) rcs $@ $^
@$(AR) rcs $(ARCHIVE) $(OBJS)
### Rule (`#include` dependencies): paste in `.d` files generated by gcc on `-MMD`
-include $(addprefix $(DST_DIR)/, $(addsuffix .d, $(basename $(SRCS))))
@ -145,8 +147,8 @@ $(ARCHIVE): $(OBJS)
### Build order control
image: image-dep
archive: $(ARCHIVE)
image-dep: $(LIBS) $(IMAGE).elf
.NOTPARALLEL: image-dep
image-dep: $(OBJS) $(LIBS)
@echo \# Creating image [$(ARCH)]
.PHONY: image image-dep archive run $(LIBS)
### Clean a single project (remove `build/`)
@ -158,5 +160,5 @@ clean:
CLEAN_ALL = $(dir $(shell find . -mindepth 2 -name Makefile))
clean-all: $(CLEAN_ALL) clean
$(CLEAN_ALL):
-@$(MAKE) -s -C $@ clean
.PHONY: clean-all $(CLEAN_ALL)
-@$(MAKE) -s -C $@ cleaear

1
am/include/amdev.h
View file

@ -2,6 +2,7 @@
#define __AMDEV_H__
// **MAY SUBJECT TO CHANGE IN THE FUTURE**
#include <am.h>
#define AM_DEVREG(id, reg, perm, ...) \
enum { AM_##reg = (id) }; \

19
am/include/arch/native.h
View file

@ -11,34 +11,15 @@ struct Context {
uintptr_t ksp;
void *vm_head;
ucontext_t uc;
#ifdef __x86_64__
// skip the red zone of the stack frame, see the amd64 ABI manual for details
uint8_t redzone[128];
#endif
};
#ifdef __x86_64__
#define GPR1 uc.uc_mcontext.gregs[REG_RDI]
#define GPR2 uc.uc_mcontext.gregs[REG_RSI]
#define GPR3 uc.uc_mcontext.gregs[REG_RDX]
#define GPR4 uc.uc_mcontext.gregs[REG_RCX]
#define GPRx uc.uc_mcontext.gregs[REG_RAX]
#elif defined(__aarch64__)
#define GPR1 uc.uc_mcontext.regs[0]
#define GPR2 uc.uc_mcontext.regs[1]
#define GPR3 uc.uc_mcontext.regs[2]
#define GPR4 uc.uc_mcontext.regs[3]
#define GPRx uc.uc_mcontext.regs[0]
#elif defined(__riscv)
// FIXME: may be wrong
#define GPR1 uc.uc_mcontext.__gregs[REG_A0]
#define GPR2 uc.uc_mcontext.__gregs[REG_A0+1]
#define GPR3 uc.uc_mcontext.__gregs[REG_A0+2]
#define GPR4 uc.uc_mcontext.__gregs[REG_A0+3]
#define GPRx uc.uc_mcontext.__gregs[REG_A0+4]
#else
#error Unsupported architecture
#endif
#undef __USE_GNU

18
am/include/arch/riscv.h
View file

@ -1,6 +1,7 @@
#ifndef ARCH_H__
#define ARCH_H__
#include <stdint.h>
#ifdef __riscv_e
#define NR_REGS 16
#else
@ -8,9 +9,12 @@
#endif
struct Context {
// TODO: fix the order of these members to match trap.S
uintptr_t mepc, mcause, gpr[NR_REGS], mstatus;
void *pdir;
//The order of these members should match trap.S, pay attention to pdir.
uintptr_t gpr[NR_REGS];
uintptr_t mcause;
uintptr_t mstatus;
uintptr_t mepc;
void *pdir;
};
#ifdef __riscv_e
@ -19,9 +23,9 @@ struct Context {
#define GPR1 gpr[17] // a7
#endif
#define GPR2 gpr[0]
#define GPR3 gpr[0]
#define GPR4 gpr[0]
#define GPRx gpr[0]
#define GPR2 gpr[10] //a0
#define GPR3 gpr[11] //a1
#define GPR4 gpr[12] //a2
#define GPRx gpr[10] //a0, return value
#endif

2
am/src/loongarch/nemu/cte.c
View file

@ -8,7 +8,7 @@ Context* __am_irq_handle(Context *c) {
if (user_handler) {
Event ev = {0};
uintptr_t ecode = 0;
switch (ecode) {
switch (ccode) {
default: ev.event = EVENT_ERROR; break;
}

44
am/src/native/cte.c
View file

@ -20,8 +20,9 @@ static void irq_handle(Context *c) {
c->ksp = thiscpu->ksp;
if (thiscpu->ev.event == EVENT_ERROR) {
printf("Unhandle signal '%s' at pc = %p, badaddr = %p, cause = 0x%x\n",
thiscpu->ev.msg, AM_REG_PC(&c->uc), thiscpu->ev.ref, thiscpu->ev.cause);
uintptr_t rip = c->uc.uc_mcontext.gregs[REG_RIP];
printf("Unhandle signal '%s' at rip = %p, badaddr = %p, cause = 0x%x\n",
thiscpu->ev.msg, rip, thiscpu->ev.ref, thiscpu->ev.cause);
assert(0);
}
c = user_handler(thiscpu->ev, c);
@ -36,14 +37,13 @@ static void irq_handle(Context *c) {
}
static void setup_stack(uintptr_t event, ucontext_t *uc) {
void *pc = (void *)AM_REG_PC(uc);
void *rip = (void *)uc->uc_mcontext.gregs[REG_RIP];
extern uint8_t _start, _etext;
int trap_from_user = __am_in_userspace(pc);
int signal_safe = IN_RANGE(pc, RANGE(&_start, &_etext)) || trap_from_user ||
int trap_from_user = __am_in_userspace(rip);
int signal_safe = IN_RANGE(rip, RANGE(&_start, &_etext)) || trap_from_user ||
// Hack here: "+13" points to the instruction after syscall. This is the
// instruction which will trigger the pending signal if interrupt is enabled.
// FIXME: should change 13 for aarch and riscv
(pc == (void *)&sigprocmask + 13);
(rip == (void *)&sigprocmask + 13);
if (((event == EVENT_IRQ_IODEV) || (event == EVENT_IRQ_TIMER)) && !signal_safe) {
// Shared libraries contain code which are not reenterable.
@ -59,17 +59,15 @@ static void setup_stack(uintptr_t event, ucontext_t *uc) {
if (trap_from_user) __am_pmem_unprotect();
// skip the instructions causing SIGSEGV for syscall
if (event == EVENT_SYSCALL) { pc += SYSCALL_INSTR_LEN; }
AM_REG_PC(uc) = (uintptr_t)pc;
if (event == EVENT_SYSCALL) { rip += SYSCALL_INSTR_LEN; }
uc->uc_mcontext.gregs[REG_RIP] = (uintptr_t)rip;
// switch to kernel stack if we were previously in user space
uintptr_t sp = trap_from_user ? thiscpu->ksp : AM_REG_SP(uc);
sp -= sizeof(Context);
#ifdef __x86_64__
// keep (sp + 8) % 16 == 0 to support SSE
if ((sp + 8) % 16 != 0) sp -= 8;
#endif
Context *c = (void *)sp;
uintptr_t rsp = trap_from_user ? thiscpu->ksp : uc->uc_mcontext.gregs[REG_RSP];
rsp -= sizeof(Context);
// keep (rsp + 8) % 16 == 0 to support SSE
if ((rsp + 8) % 16 != 0) rsp -= 8;
Context *c = (void *)rsp;
// save the context on the stack
c->uc = *uc;
@ -78,17 +76,17 @@ static void setup_stack(uintptr_t event, ucontext_t *uc) {
__am_get_intr_sigmask(&uc->uc_sigmask);
// call irq_handle after returning from the signal handler
AM_REG_GPR1(uc) = (uintptr_t)c;
AM_REG_PC(uc) = (uintptr_t)irq_handle;
AM_REG_SP(uc) = (uintptr_t)c;
uc->uc_mcontext.gregs[REG_RDI] = (uintptr_t)c;
uc->uc_mcontext.gregs[REG_RIP] = (uintptr_t)irq_handle;
uc->uc_mcontext.gregs[REG_RSP] = (uintptr_t)c;
}
static void iret(ucontext_t *uc) {
Context *c = (void *)AM_REG_GPR1(uc);
Context *c = (void *)uc->uc_mcontext.gregs[REG_RDI];
// restore the context
*uc = c->uc;
thiscpu->ksp = c->ksp;
if (__am_in_userspace((void *)AM_REG_PC(uc))) __am_pmem_protect();
if (__am_in_userspace((void *)uc->uc_mcontext.gregs[REG_RIP])) __am_pmem_protect();
}
static void sig_handler(int sig, siginfo_t *info, void *ucontext) {
@ -169,8 +167,8 @@ Context* kcontext(Area kstack, void (*entry)(void *), void *arg) {
Context *c = (Context*)kstack.end - 1;
__am_get_example_uc(c);
AM_REG_PC(&c->uc) = (uintptr_t)__am_kcontext_start;
AM_REG_SP(&c->uc) = (uintptr_t)kstack.end;
c->uc.uc_mcontext.gregs[REG_RIP] = (uintptr_t)__am_kcontext_start;
c->uc.uc_mcontext.gregs[REG_RSP] = (uintptr_t)kstack.end;
int ret = sigemptyset(&(c->uc.uc_sigmask)); // enable interrupt
assert(ret == 0);

2
am/src/native/ioe/audio.c
View file

@ -2,7 +2,7 @@
#include <fcntl.h>
#include <unistd.h>
#include <klib.h>
#include <SDL.h>
#include <SDL2/SDL.h>
static int rfd = -1, wfd = -1;
static volatile int count = 0;

21
am/src/native/ioe/gpu.c
View file

@ -1,14 +1,14 @@
#include <am.h>
#include <SDL.h>
#include <SDL2/SDL.h>
#include <fenv.h>
//#define MODE_800x600
#define WINDOW_W 800
#define WINDOW_H 600
#ifdef MODE_800x600
const int disp_w = WINDOW_W, disp_h = WINDOW_H;
# define W 800
# define H 600
#else
const int disp_w = 400, disp_h = 300;
# define W 400
# define H 300
#endif
#define FPS 60
@ -31,8 +31,13 @@ void __am_gpu_init() {
SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER);
window = SDL_CreateWindow("Native Application",
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
WINDOW_W, WINDOW_H, SDL_WINDOW_OPENGL);
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, disp_w, disp_h, 32,
#ifdef MODE_800x600
W, H,
#else
W * 2, H * 2,
#endif
SDL_WINDOW_OPENGL);
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, W, H, 32,
RMASK, GMASK, BMASK, AMASK);
SDL_AddTimer(1000 / FPS, texture_sync, NULL);
}
@ -40,7 +45,7 @@ void __am_gpu_init() {
void __am_gpu_config(AM_GPU_CONFIG_T *cfg) {
*cfg = (AM_GPU_CONFIG_T) {
.present = true, .has_accel = false,
.width = disp_w, .height = disp_h,
.width = W, .height = H,
.vmemsz = 0
};
}

2
am/src/native/ioe/input.c
View file

@ -1,5 +1,5 @@
#include <am.h>
#include <SDL.h>
#include <SDL2/SDL.h>
#define KEYDOWN_MASK 0x8000

2
am/src/native/platform.c
View file

@ -150,9 +150,7 @@ static void init_platform() {
// save the context template
save_example_context();
#ifdef __x86_64__
uc_example.uc_mcontext.fpregs = NULL; // clear the FPU context
#endif
__am_get_intr_sigmask(&uc_example.uc_sigmask);
// disable interrupts by default

16
am/src/native/platform.h
View file

@ -7,22 +7,6 @@
#include <klib.h>
#include <klib-macros.h>
#ifdef __x86_64__
#define AM_REG_PC(uc) (uc)->uc_mcontext.gregs[REG_RIP]
#define AM_REG_SP(uc) (uc)->uc_mcontext.gregs[REG_RSP]
#define AM_REG_GPR1(uc) (uc)->uc_mcontext.gregs[REG_RDI]
#elif defined(__aarch64__)
#define AM_REG_PC(uc) (uc)->uc_mcontext.pc
#define AM_REG_SP(uc) (uc)->uc_mcontext.sp
#define AM_REG_GPR1(uc) (uc)->uc_mcontext.regs[0]
#elif defined(__riscv) && __riscv_xlen == 64
#define AM_REG_PC(uc) (uc)->uc_mcontext.__gregs[REG_PC]
#define AM_REG_SP(uc) (uc)->uc_mcontext.__gregs[REG_SP]
#define AM_REG_GPR1(uc) (uc)->uc_mcontext.__gregs[REG_A0]
#else
#error Unsupported architecture
#endif
void __am_get_example_uc(Context *r);
void __am_get_intr_sigmask(sigset_t *s);
int __am_is_sigmask_sti(sigset_t *s);

19
am/src/native/trap.S
View file

@ -1,6 +1,5 @@
.global __am_kcontext_start
__am_kcontext_start:
#ifdef __x86_64__
// rdi = arg, rsi = entry
// (rsp + 8) should be multiple of 16 when
@ -9,21 +8,3 @@ __am_kcontext_start:
andq $0xfffffffffffffff0, %rsp
call *%rsi
call __am_panic_on_return
#elif __aarch64__
// x0 = arg, x1 = entry
// (sp + 16) should be multiple of 16 when
// control is transfered to the function entry point.
// See aarch64 ABI manual for more details
// https://github.com/ARM-software/abi-aa
mov x2, sp
and sp, x2, #0xfffffffffffffff0
br x1
bl __am_panic_on_return
#elif __riscv
// See riscv ABI manual for more details
// https://github.com/riscv-non-isa/riscv-elf-psabi-doc
addi sp, sp, -16
andi sp, sp, ~15
jalr a1
jal __am_panic_on_return
#endif

4
am/src/native/vme.c
View file

@ -124,8 +124,8 @@ Context* ucontext(AddrSpace *as, Area kstack, void *entry) {
Context *c = (Context*)kstack.end - 1;
__am_get_example_uc(c);
AM_REG_PC(&c->uc) = (uintptr_t)entry;
AM_REG_SP(&c->uc) = (uintptr_t)USER_SPACE.end;
c->uc.uc_mcontext.gregs[REG_RIP] = (uintptr_t)entry;
c->uc.uc_mcontext.gregs[REG_RSP] = (uintptr_t)USER_SPACE.end;
int ret = sigemptyset(&(c->uc.uc_sigmask)); // enable interrupt
assert(ret == 0);

12
am/src/platform/dummy/audio.c Normal file
View file

@ -0,0 +1,12 @@
#include <am.h>
void __am_audio_init() {
}
size_t __am_audio_write(uintptr_t reg, void *buf, size_t size) {
return 0;
}
size_t __am_audio_read(uintptr_t reg, void *buf, size_t size) {
return 0;
}

7
am/src/platform/dummy/input.c Normal file
View file

@ -0,0 +1,7 @@
#include "amdev.h"
#include <am.h>
void __am_input_read(AM_INPUT_KEYBRD_T *kbd) {
kbd->keydown = 0;
kbd->keycode = AM_KEY_NONE;
}

4
am/src/platform/dummy/trm.c
View file

@ -4,7 +4,7 @@ Area heap = RANGE(NULL, NULL);
void putch(char ch) {
}
void halt(int code) {
while (1);
while (1);
}

16
am/src/platform/dummy/video.c Normal file
View file

@ -0,0 +1,16 @@
#include <am.h>
#include <amdev.h>
#define W 320
#define H 240
size_t __am_video_read(uintptr_t reg, void *buf, size_t size) {
return 0;
}
size_t __am_video_write(uintptr_t reg, void *buf, size_t size) {
return 0;
}
void __am_vga_init() {
}

3
am/src/platform/nemu/include/nemu.h
View file

@ -14,7 +14,7 @@
# define nemu_trap(code) asm volatile("mv a0, %0; ebreak" : :"r"(code))
#elif defined(__ISA_LOONGARCH32R__)
# define nemu_trap(code) asm volatile("move $a0, %0; break 0" : :"r"(code))
#else
#elif
# error unsupported ISA __ISA__
#endif
@ -26,6 +26,7 @@
#define MMIO_BASE 0xa0000000
#define SERIAL_PORT (DEVICE_BASE + 0x00003f8)
#define KBD_ADDR (DEVICE_BASE + 0x0000060)
#define RTC_ADDR (DEVICE_BASE + 0x0000048)

33
am/src/platform/nemu/ioe/audio.c
View file

@ -1,5 +1,9 @@
#include "amdev.h"
#include "riscv/riscv.h"
#include <am.h>
#include <nemu.h>
#include <stdbool.h>
#include <stdint.h>
#define AUDIO_FREQ_ADDR (AUDIO_ADDR + 0x00)
#define AUDIO_CHANNELS_ADDR (AUDIO_ADDR + 0x04)
@ -8,19 +12,40 @@
#define AUDIO_INIT_ADDR (AUDIO_ADDR + 0x10)
#define AUDIO_COUNT_ADDR (AUDIO_ADDR + 0x14)
void __am_audio_init() {
}
//We assume that this configure will never change during the execution
AM_AUDIO_CONFIG_T cfg_now;
int last_write = 0;
void __am_audio_config(AM_AUDIO_CONFIG_T *cfg) {
cfg->present = false;
cfg->present = true;
cfg->bufsize = inl(AUDIO_SBUF_SIZE_ADDR);
}
void __am_audio_init() {
outl(AUDIO_INIT_ADDR, 0);
__am_audio_config(&cfg_now);
}
void __am_audio_ctrl(AM_AUDIO_CTRL_T *ctrl) {
outl(AUDIO_FREQ_ADDR, ctrl->freq);
outl(AUDIO_CHANNELS_ADDR, ctrl->channels);
outl(AUDIO_SAMPLES_ADDR, ctrl->samples);
outl(AUDIO_INIT_ADDR, 1);
}
void __am_audio_status(AM_AUDIO_STATUS_T *stat) {
stat->count = 0;
stat->count = inl(AUDIO_COUNT_ADDR);
}
void __am_audio_play(AM_AUDIO_PLAY_T *ctl) {
int len = ctl->buf.end - ctl->buf.start;
int count = inl(AUDIO_COUNT_ADDR);
int size = cfg_now.bufsize;
for(; count + len > size; count = inl(AUDIO_COUNT_ADDR));
for(int i = 0; i < len; i += 4) {
outl(last_write + AUDIO_SBUF_ADDR, *(uint32_t*)(ctl->buf.start + i));
last_write = (last_write + 4) % size;
}
//Should lock here, NEMU and AM may write to this addr at the same time
outl(AUDIO_COUNT_ADDR, inl(AUDIO_COUNT_ADDR) + len);
}

44
am/src/platform/nemu/ioe/gpu.c
View file

@ -1,23 +1,51 @@
//#include "amdev.h"
#include "riscv/riscv.h"
#include <am.h>
#include <nemu.h>
#include <klib.h>
#include <stdint.h>
#define SYNC_ADDR (VGACTL_ADDR + 4)
void __am_gpu_init() {
}
static AM_GPU_CONFIG_T cfg_now;
void __am_gpu_config(AM_GPU_CONFIG_T *cfg) {
uint32_t vga_ctrl_data = inl(VGACTL_ADDR);
uint16_t w = vga_ctrl_data >> 16;
uint16_t h = vga_ctrl_data & 0x0000ffff;
*cfg = (AM_GPU_CONFIG_T) {
.present = true, .has_accel = false,
.width = 0, .height = 0,
.vmemsz = 0
.width = w, .height = h,
.vmemsz = w * h
};
}
void __am_gpu_init() {
__am_gpu_config(&cfg_now);
}
void __am_gpu_fbdraw(AM_GPU_FBDRAW_T *ctl) {
if (ctl->sync) {
outl(SYNC_ADDR, 1);
}
//size of block
int w = ctl->w, h = ctl->h;
//coordinates of the bottom-left pixel of the block
int x = ctl->x, y = ctl->y;
uint32_t pixel_idx = 0;
uint32_t pixel = 0;
uint32_t buffer_idx = y * cfg_now.width + x;
for(int i = 0; i < h; i++) {
for(int j = 0; j < w; j++) {
pixel = *((uint32_t*)ctl->pixels + pixel_idx);
outl(FB_ADDR + 4U * buffer_idx, pixel);
pixel_idx++;
buffer_idx++;
}
buffer_idx += cfg_now.width - w;
}
if (ctl->sync) {
outl(SYNC_ADDR, 1);
}
}
void __am_gpu_status(AM_GPU_STATUS_T *status) {

7
am/src/platform/nemu/ioe/input.c
View file

@ -1,9 +1,12 @@
#include "riscv/riscv.h"
#include <am.h>
#include <nemu.h>
#include <amdev.h>
#define KEYDOWN_MASK 0x8000
void __am_input_keybrd(AM_INPUT_KEYBRD_T *kbd) {
kbd->keydown = 0;
kbd->keycode = AM_KEY_NONE;
uint32_t k = inl(KBD_ADDR);
kbd->keydown = (k & KEYDOWN_MASK ? true : false);
kbd->keycode = k & ~KEYDOWN_MASK;
}

9
am/src/platform/nemu/ioe/timer.c
View file

@ -1,11 +1,18 @@
#include "riscv/riscv.h"
#include <am.h>
#include <nemu.h>
#include <stdint.h>
void __am_timer_init() {
outl(RTC_ADDR, 0);
outl(RTC_ADDR + 4, 0);
}
void __am_timer_uptime(AM_TIMER_UPTIME_T *uptime) {
uptime->us = 0;
uint32_t h = inl(RTC_ADDR + 4);
uint32_t l = inl(RTC_ADDR);
uptime->us = (uint64_t)h << 32 | l;
}
void __am_timer_rtc(AM_TIMER_RTC_T *rtc) {

7
am/src/platform/nemu/trm.c
View file

@ -2,10 +2,14 @@
#include <nemu.h>
extern char _heap_start;
extern void *heap_alloc_ptr;
int main(const char *args);
Area heap = RANGE(&_heap_start, PMEM_END);
static const char mainargs[MAINARGS_MAX_LEN] = MAINARGS_PLACEHOLDER; // defined in CFLAGS
#ifndef MAINARGS
#define MAINARGS ""
#endif
static const char mainargs[] = MAINARGS;
void putch(char ch) {
outb(SERIAL_PORT, ch);
@ -19,6 +23,7 @@ void halt(int code) {
}
void _trm_init() {
heap_alloc_ptr = heap.start;
int ret = main(mainargs);
halt(ret);
}

32
am/src/riscv/nemu/cte.c
View file

@ -8,6 +8,19 @@ Context* __am_irq_handle(Context *c) {
if (user_handler) {
Event ev = {0};
switch (c->mcause) {
case 11:
#ifdef __riscv_e
uint32_t call_number = c->gpr[15]; //a5
#else
uint32_t call_number = c->gpr[17]; //a7
#endif
switch(call_number) {
case -1: ev.event = EVENT_YIELD; break;
default:
ev.event = EVENT_SYSCALL; break;
}
break;
default: ev.event = EVENT_ERROR; break;
}
@ -17,7 +30,6 @@ Context* __am_irq_handle(Context *c) {
return c;
}
extern void __am_asm_trap(void);
bool cte_init(Context*(*handler)(Event, Context*)) {
@ -31,11 +43,27 @@ bool cte_init(Context*(*handler)(Event, Context*)) {
}
Context *kcontext(Area kstack, void (*entry)(void *), void *arg) {
return NULL;
uint32_t *stack = kstack.end; //kernel stack top
stack -= 32 + 4;
for(int i = 0; i < 32; i++) {
stack[i] = 0;
}
//stack[2] = (uint32_t)((uint32_t*)kstack.start + 1024);
stack[10] = (uint32_t)arg;
stack[32] = 11; //mcause
stack[33] = 0x1800U; //mstatus
stack[34] = (uint32_t)entry; //mepc
stack[35] = 0; //addr space
//
uint32_t *begin = kstack.start;
*begin = (uint32_t)stack;
return (Context *)stack;
}
void yield() {
#ifdef __riscv_e
//use a5 or a7 to get system call ID
asm volatile("li a5, -1; ecall");
#else
asm volatile("li a7, -1; ecall");

4
am/src/riscv/nemu/start.S
View file

@ -5,6 +5,4 @@
_start:
mv s0, zero
la sp, _stack_pointer
call _trm_init
.size _start, . - _start
jal _trm_init

4
am/src/riscv/nemu/trap.S
View file

@ -58,14 +58,14 @@ __am_asm_trap:
csrw mstatus, t1
mv a0, sp
call __am_irq_handle
jal __am_irq_handle
mv sp, a0
LOAD t1, OFFSET_STATUS(sp)
LOAD t2, OFFSET_EPC(sp)
csrw mstatus, t1
csrw mepc, t2
MAP(REGS, POP)
addi sp, sp, CONTEXT_SIZE
mret

19
am/src/riscv/npc/cte.c
View file

@ -8,6 +8,7 @@ Context* __am_irq_handle(Context *c) {
if (user_handler) {
Event ev = {0};
switch (c->mcause) {
case 11: ev.event = EVENT_YIELD; break; // scause ?
default: ev.event = EVENT_ERROR; break;
}
@ -31,7 +32,23 @@ bool cte_init(Context*(*handler)(Event, Context*)) {
}
Context *kcontext(Area kstack, void (*entry)(void *), void *arg) {
return NULL;
//Note that we use e extension here !!!!
uint32_t *stack = kstack.end; //kernel stack top
stack -= 16 + 4;
for(int i = 0; i < 16; i++) {
stack[i] = 0;
}
//stack[2] = (uint32_t)((uint32_t*)kstack.start + 1024);
stack[10] = (uint32_t)arg;
stack[16] = 11; //mcause
stack[17] = 0x1800U; //mstatus
stack[18] = (uint32_t)entry; //mepc
stack[19] = 0; //addr space
//
uint32_t *begin = kstack.start;
*begin = (uint32_t)stack;
return (Context *)stack;
}
void yield() {

12
am/src/riscv/npc/libgcc/div.S
View file

@ -40,7 +40,7 @@ FUNC_BEGIN (__udivsi3)
sll a0, a0, 32
sll a1, a1, 32
move t0, ra
call HIDDEN_JUMPTARGET(__udivdi3)
jal HIDDEN_JUMPTARGET(__udivdi3)
sext.w a0, a0
jr t0
FUNC_END (__udivsi3)
@ -52,7 +52,7 @@ FUNC_BEGIN (__umodsi3)
srl a0, a0, 32
srl a1, a1, 32
move t0, ra
call HIDDEN_JUMPTARGET(__udivdi3)
jal HIDDEN_JUMPTARGET(__udivdi3)
sext.w a0, a1
jr t0
FUNC_END (__umodsi3)
@ -100,7 +100,7 @@ HIDDEN_DEF (__udivdi3)
FUNC_BEGIN (__umoddi3)
/* Call __udivdi3(a0, a1), then return the remainder, which is in a1. */
move t0, ra
call HIDDEN_JUMPTARGET(__udivdi3)
jal HIDDEN_JUMPTARGET(__udivdi3)
move a0, a1
jr t0
FUNC_END (__umoddi3)
@ -117,7 +117,7 @@ FUNC_END (__umoddi3)
neg a1, a1
.L12:
move t0, ra
call HIDDEN_JUMPTARGET(__udivdi3)
jal HIDDEN_JUMPTARGET(__udivdi3)
neg a0, a0
jr t0
FUNC_END (__divdi3)
@ -127,7 +127,7 @@ FUNC_BEGIN (__moddi3)
bltz a1, .L31
bltz a0, .L32
.L30:
call HIDDEN_JUMPTARGET(__udivdi3) /* The dividend is not negative. */
jal HIDDEN_JUMPTARGET(__udivdi3) /* The dividend is not negative. */
move a0, a1
jr t0
.L31:
@ -135,7 +135,7 @@ FUNC_BEGIN (__moddi3)
bgez a0, .L30
.L32:
neg a0, a0
call HIDDEN_JUMPTARGET(__udivdi3) /* The dividend is hella negative. */
jal HIDDEN_JUMPTARGET(__udivdi3) /* The dividend is hella negative. */
neg a0, a1
jr t0
FUNC_END (__moddi3)

2
am/src/riscv/npc/start.S
View file

@ -5,4 +5,4 @@
_start:
mv s0, zero
la sp, _stack_pointer
call _trm_init
jal _trm_init

17
am/src/riscv/npc/timer.c
View file

@ -1,10 +1,21 @@
#include "amdev.h"
#include "riscv/riscv.h"
#include <am.h>
#include <stdint.h>
void __am_timer_init() {
}
#define RTC_ADDR 0xa0000048
static uint64_t up = 0;
void __am_timer_uptime(AM_TIMER_UPTIME_T *uptime) {
uptime->us = 0;
uint32_t h = inl(RTC_ADDR + 4);
uint32_t l = inl(RTC_ADDR);
uint64_t time = (uint64_t)h << 32 | l;
uptime->us = time - up;
}
void __am_timer_init() {
uint32_t h = inl(RTC_ADDR + 4);
uint32_t l = inl(RTC_ADDR);
up = (uint64_t)h << 32 | l;
}
void __am_timer_rtc(AM_TIMER_RTC_T *rtc) {

1
am/src/riscv/npc/trap.S
View file

@ -55,6 +55,7 @@ __am_asm_trap:
mv a0, sp
jal __am_irq_handle
mv sp, a0
LOAD t1, OFFSET_STATUS(sp)
LOAD t2, OFFSET_EPC(sp)
csrw mstatus, t1

13
am/src/riscv/npc/trm.c
View file

@ -1,3 +1,4 @@
#include "riscv/riscv.h"
#include <am.h>
#include <klib-macros.h>
@ -9,13 +10,21 @@ extern char _pmem_start;
#define PMEM_END ((uintptr_t)&_pmem_start + PMEM_SIZE)
Area heap = RANGE(&_heap_start, PMEM_END);
static const char mainargs[MAINARGS_MAX_LEN] = MAINARGS_PLACEHOLDER; // defined in CFLAGS
#ifndef MAINARGS
#define MAINARGS ""
#endif
static const char mainargs[] = MAINARGS;
void putch(char ch) {
#define SERIAL_PORT 0xa00003f8
outb(SERIAL_PORT, ch);
}
void halt(int code) {
while (1);
asm volatile("mv a0, %0; ebreak" :: "r"(code));
//can't compile without this
while (1);
}
void _trm_init() {

22
am/src/riscv/nutshell/common/ioe.c Normal file
View file

@ -0,0 +1,22 @@
#include <am.h>
#include <amdev.h>
void __am_timer_init();
void __am_timer_rtc(AM_TIMER_RTC_T *);
void __am_timer_uptime(AM_TIMER_UPTIME_T *);
static void __am_timer_config(AM_TIMER_CONFIG_T *cfg) { cfg->present = true; cfg->has_rtc = true; }
bool ioe_init() {
__am_timer_init();
return true;
}
typedef void (*handler_t)(void *buf);
static void *lut[128] = {
[AM_TIMER_CONFIG] = __am_timer_config,
[AM_TIMER_RTC ] = __am_timer_rtc,
[AM_TIMER_UPTIME] = __am_timer_uptime,
};
typedef void (*handler_t)(void *buf);
void ioe_read (int reg, void *buf) { ((handler_t)lut[reg])(buf); }
void ioe_write(int reg, void *buf) { ((handler_t)lut[reg])(buf); }

4
am/src/riscv/nutshell/common/mainargs.S Normal file
View file

@ -0,0 +1,4 @@
.section .rodata
.globl __am_mainargs
__am_mainargs:
.asciz MAINARGS

30
am/src/riscv/nutshell/common/timer.c Normal file
View file

@ -0,0 +1,30 @@
#include <am.h>
#include <amdev.h>
#include <stdint.h>
#include <nutshell.h>
#include <riscv/riscv.h>
#include <klib.h>
static uint64_t boot_time = 0;
static inline uint64_t read_time(void) {
//Just host time
return ind(RTC_ADDR) * 20000; // unit: us
//return ind(RTC_ADDR); // unit: us
}
void __am_timer_uptime(AM_TIMER_UPTIME_T *uptime) {
uptime->us = read_time() - boot_time;
}
void __am_timer_rtc(AM_TIMER_RTC_T *rtc) {
rtc->second = 0;
rtc->minute = 0;
rtc->hour = 0;
rtc->day = 0;
rtc->month = 0;
rtc->year = 2018;
}
void __am_timer_init() {
boot_time = read_time();
}

28
am/src/riscv/nutshell/common/uartlite.c Normal file
View file

@ -0,0 +1,28 @@
#include <riscv/riscv.h>
#define UARTLITE_MMIO 0x40600000
#define UARTLITE_RX_FIFO 0x0
#define UARTLITE_TX_FIFO 0x4
#define UARTLITE_STAT_REG 0x8
#define UARTLITE_CTRL_REG 0xc
#define UARTLITE_RST_FIFO 0x03
#define UARTLITE_TX_FULL 0x08
#define UARTLITE_RX_VALID 0x01
void __am_init_uartlite(void) {
outb(UARTLITE_MMIO + UARTLITE_CTRL_REG, UARTLITE_RST_FIFO);
}
void __am_uartlite_putchar(char ch) {
if (ch == '\n') __am_uartlite_putchar('\r');
while (inb(UARTLITE_MMIO + UARTLITE_STAT_REG) & UARTLITE_TX_FULL);
outb(UARTLITE_MMIO + UARTLITE_TX_FIFO, ch);
}
int __am_uartlite_getchar() {
if (inb(UARTLITE_MMIO + UARTLITE_STAT_REG) & UARTLITE_RX_VALID)
return inb(UARTLITE_MMIO + UARTLITE_RX_FIFO);
return 0;
}

12
am/src/riscv/nutshell/include/nutshell.h Normal file
View file

@ -0,0 +1,12 @@
#ifndef __NUTSHELL_H__
#define __NUTSHELL_H__
#include <klib-macros.h>
#include <riscv/riscv.h>
# define RTC_ADDR 0x3800bff8
# define SCREEN_ADDR 0x40001000
# define SYNC_ADDR 0x40001004
# define FB_ADDR 0x50000000
#endif

7
am/src/riscv/nutshell/isa/riscv/boot/loader64.ld Normal file
View file

@ -0,0 +1,7 @@
pmem_base = 0x80000000;
MEMORY {
ram (rwxa) : ORIGIN = 0x80000000, LENGTH = 128M
}
INCLUDE "section.ld"

8
am/src/riscv/nutshell/isa/riscv/boot/start.S Normal file
View file

@ -0,0 +1,8 @@
.section entry, "ax"
.globl _start
.type _start, @function
_start:
mv s0, zero
la sp, _stack_pointer
jal _trm_init

38
am/src/riscv/nutshell/isa/riscv/trm.c Normal file
View file

@ -0,0 +1,38 @@
#include <am.h>
#include <riscv/riscv.h>
#include <klib.h>
extern char _heap_start;
extern char _pmem_end;
int main(const char *args);
void __am_init_uartlite(void);
void __am_uartlite_putchar(char ch);
Area heap = {
.start = &_heap_start,
.end = &_pmem_end,
};
void putch(char ch) {
__am_uartlite_putchar(ch);
}
void halt(int code) {
printf("Before 0x0005006b\n");
__asm__ volatile("mv a0, %0; .word 0x0005006b" : :"r"(code));
// should not reach here during simulation
printf("Exit with code = %d\n", code);
// should not reach here on FPGA
while (1);
}
extern char __am_mainargs;
static const char *mainargs = &__am_mainargs;
void _trm_init() {
__am_init_uartlite();
int ret = main(mainargs);
halt(ret);
}

33
am/src/riscv/nutshell/ldscript/section.ld Normal file
View file

@ -0,0 +1,33 @@
ENTRY(_start)
SECTIONS {
. = ORIGIN(ram);
.text : {
*(entry)
*(.text)
}
etext = .;
_etext = .;
.rodata : {
*(.rodata*)
}
.data : {
*(.data)
}
edata = .;
_data = .;
.bss : {
_bss_start = .;
*(.bss*)
*(.sbss*)
*(.scommon)
}
_stack_top = ALIGN(0x1000);
. = _stack_top + 0x8000;
_stack_pointer = .;
end = .;
_end = .;
_heap_start = ALIGN(0x1000);
_pmem_start = pmem_base;
_pmem_end = _pmem_start + LENGTH(ram);
}

23
am/src/riscv/riscv.h
View file

@ -1,15 +1,23 @@
#ifndef RISCV_H__
#define RISCV_H__
#ifndef __ASSEMBLER__
#include <stdint.h>
typedef union {
struct { uint32_t lo, hi; };
int64_t val;
} R64;
static inline uint8_t inb(uintptr_t addr) { return *(volatile uint8_t *)addr; }
static inline uint16_t inw(uintptr_t addr) { return *(volatile uint16_t *)addr; }
static inline uint32_t inl(uintptr_t addr) { return *(volatile uint32_t *)addr; }
static inline uint64_t ind(uintptr_t addr) { return *(volatile uint64_t *)addr; }
static inline void outb(uintptr_t addr, uint8_t data) { *(volatile uint8_t *)addr = data; }
static inline void outw(uintptr_t addr, uint16_t data) { *(volatile uint16_t *)addr = data; }
static inline void outl(uintptr_t addr, uint32_t data) { *(volatile uint32_t *)addr = data; }
static inline void outd(uintptr_t addr, uint64_t data) { *(volatile uint64_t *)addr = data; }
#define PTE_V 0x01
#define PTE_R 0x02
@ -19,9 +27,14 @@ static inline void outl(uintptr_t addr, uint32_t data) { *(volatile uint32_t *)a
#define PTE_A 0x40
#define PTE_D 0x80
enum { MODE_U, MODE_S, MODE_M = 3 };
enum { MODE_U, MODE_S, MODE_H, MODE_M};
#define MSTATUS_IE(mode) ((1 << (mode)) << 0)
#define MSTATUS_PIE(mode) ((1 << (mode)) << 4)
#define MSTATUS_MPP(mode) ((mode) << 11)
#define MSTATUS_SPP(mode) ((mode) << 8)
#define MSTATUS_MXR (1 << 19)
#define MSTATUS_SUM (1 << 18)
#define MSTATUS_MPRV (1 << 17)
#if __riscv_xlen == 64
#define MSTATUS_SXL (2ull << 34)
@ -31,4 +44,12 @@ enum { MODE_U, MODE_S, MODE_M = 3 };
#define MSTATUS_UXL 0
#endif
// Address in page table entry
#define PTE_ADDR(pte) (((uintptr_t)(pte) & ~0x3ff) << 2)
#define PTW_SV32 ((ptw_config) { .ptw_level = 2, .vpn_width = 10 })
#define PTW_SV39 ((ptw_config) { .ptw_level = 3, .vpn_width = 9 })
#define PTW_SV48 ((ptw_config) { .ptw_level = 4, .vpn_width = 9 })
#endif
#endif

67
am/src/riscv/ysyxsoc/cte.c Normal file
View file

@ -0,0 +1,67 @@
#include <am.h>
#include <riscv/riscv.h>
#include <klib.h>
static Context* (*user_handler)(Event, Context*) = NULL;
Context* __am_irq_handle(Context *c) {
if (user_handler) {
Event ev = {0};
switch (c->mcause) {
case 11: ev.event = EVENT_YIELD; break; // scause ?
default: ev.event = EVENT_ERROR; break;
}
c = user_handler(ev, c);
assert(c != NULL);
}
return c;
}
extern void __am_asm_trap(void);
bool cte_init(Context*(*handler)(Event, Context*)) {
// initialize exception entry
asm volatile("csrw mtvec, %0" : : "r"(__am_asm_trap));
// register event handler
user_handler = handler;
return true;
}
Context *kcontext(Area kstack, void (*entry)(void *), void *arg) {
//Note that we use e extension here !!!!
uint32_t *stack = kstack.end; //kernel stack top
stack -= 16 + 4;
for(int i = 0; i < 16; i++) {
stack[i] = 0;
}
//stack[2] = (uint32_t)((uint32_t*)kstack.start + 1024);
stack[10] = (uint32_t)arg;
stack[16] = 11; //mcause
stack[17] = 0x1800U; //mstatus
stack[18] = (uint32_t)entry; //mepc
stack[19] = 0; //addr space
//
uint32_t *begin = kstack.start;
*begin = (uint32_t)stack;
return (Context *)stack;
}
void yield() {
#ifdef __riscv_e
asm volatile("li a5, -1; ecall");
#else
asm volatile("li a7, -1; ecall");
#endif
}
bool ienabled() {
return false;
}
void iset(bool enable) {
}

6
am/src/riscv/ysyxsoc/input.c Normal file
View file

@ -0,0 +1,6 @@
#include <am.h>
void __am_input_keybrd(AM_INPUT_KEYBRD_T *kbd) {
kbd->keydown = 0;
kbd->keycode = AM_KEY_NONE;
}

34
am/src/riscv/ysyxsoc/ioe.c Normal file
View file

@ -0,0 +1,34 @@
#include <am.h>
#include <klib-macros.h>
void __am_timer_init();
void __am_timer_rtc(AM_TIMER_RTC_T *);
void __am_timer_uptime(AM_TIMER_UPTIME_T *);
void __am_input_keybrd(AM_INPUT_KEYBRD_T *);
static void __am_timer_config(AM_TIMER_CONFIG_T *cfg) { cfg->present = true; cfg->has_rtc = true; }
static void __am_input_config(AM_INPUT_CONFIG_T *cfg) { cfg->present = true; }
static void __am_uart_config(AM_INPUT_CONFIG_T *cfg) { cfg->present = false; }
typedef void (*handler_t)(void *buf);
static void *lut[128] = {
[AM_TIMER_CONFIG] = __am_timer_config,
[AM_TIMER_RTC ] = __am_timer_rtc,
[AM_TIMER_UPTIME] = __am_timer_uptime,
[AM_INPUT_CONFIG] = __am_input_config,
[AM_INPUT_KEYBRD] = __am_input_keybrd,
[AM_UART_CONFIG] = __am_uart_config,
};
static void fail(void *buf) { panic("access nonexist register"); }
bool ioe_init() {
for (int i = 0; i < LENGTH(lut); i++)
if (!lut[i]) lut[i] = fail;
__am_timer_init();
return true;
}
void ioe_read (int reg, void *buf) { ((handler_t)lut[reg])(buf); }
void ioe_write(int reg, void *buf) { ((handler_t)lut[reg])(buf); }

27
am/src/riscv/ysyxsoc/libgcc/ashldi3.c Normal file
View file

@ -0,0 +1,27 @@
#define LIBGCC2_UNITS_PER_WORD (__riscv_xlen / 8)
#include "libgcc2.h"
DWtype __ashldi3 (DWtype u, shift_count_type b)
{
if (b == 0)
return u;
const DWunion uu = {.ll = u};
const shift_count_type bm = W_TYPE_SIZE - b;
DWunion w;
if (bm <= 0)
{
w.s.low = 0;
w.s.high = (UWtype) uu.s.low << -bm;
}
else
{
const UWtype carries = (UWtype) uu.s.low >> bm;
w.s.low = (UWtype) uu.s.low << b;
w.s.high = ((UWtype) uu.s.high << b) | carries;
}
return w.ll;
}

150
am/src/riscv/ysyxsoc/libgcc/div.S Normal file
View file

@ -0,0 +1,150 @@
/* Integer division routines for RISC-V.
Copyright (C) 2016-2022 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#include "riscv-asm.h"
.text
.align 2
#if __riscv_xlen == 32
/* Our RV64 64-bit routines are equivalent to our RV32 32-bit routines. */
# define __udivdi3 __udivsi3
# define __umoddi3 __umodsi3
# define __divdi3 __divsi3
# define __moddi3 __modsi3
#else
FUNC_BEGIN (__udivsi3)
/* Compute __udivdi3(a0 << 32, a1 << 32); cast result to uint32_t. */
sll a0, a0, 32
sll a1, a1, 32
move t0, ra
jal HIDDEN_JUMPTARGET(__udivdi3)
sext.w a0, a0
jr t0
FUNC_END (__udivsi3)
FUNC_BEGIN (__umodsi3)
/* Compute __udivdi3((uint32_t)a0, (uint32_t)a1); cast a1 to uint32_t. */
sll a0, a0, 32
sll a1, a1, 32
srl a0, a0, 32
srl a1, a1, 32
move t0, ra
jal HIDDEN_JUMPTARGET(__udivdi3)
sext.w a0, a1
jr t0
FUNC_END (__umodsi3)
FUNC_ALIAS (__modsi3, __moddi3)
FUNC_BEGIN( __divsi3)
/* Check for special case of INT_MIN/-1. Otherwise, fall into __divdi3. */
li t0, -1
beq a1, t0, .L20
#endif
FUNC_BEGIN (__divdi3)
bltz a0, .L10
bltz a1, .L11
/* Since the quotient is positive, fall into __udivdi3. */
FUNC_BEGIN (__udivdi3)
mv a2, a1
mv a1, a0
li a0, -1
beqz a2, .L5
li a3, 1
bgeu a2, a1, .L2
.L1:
blez a2, .L2
slli a2, a2, 1
slli a3, a3, 1
bgtu a1, a2, .L1
.L2:
li a0, 0
.L3:
bltu a1, a2, .L4
sub a1, a1, a2
or a0, a0, a3
.L4:
srli a3, a3, 1
srli a2, a2, 1
bnez a3, .L3
.L5:
ret
FUNC_END (__udivdi3)
HIDDEN_DEF (__udivdi3)
FUNC_BEGIN (__umoddi3)
/* Call __udivdi3(a0, a1), then return the remainder, which is in a1. */
move t0, ra
jal HIDDEN_JUMPTARGET(__udivdi3)
move a0, a1
jr t0
FUNC_END (__umoddi3)
/* Handle negative arguments to __divdi3. */
.L10:
neg a0, a0
/* Zero is handled as a negative so that the result will not be inverted. */
bgtz a1, .L12 /* Compute __udivdi3(-a0, a1), then negate the result. */
neg a1, a1
j HIDDEN_JUMPTARGET(__udivdi3) /* Compute __udivdi3(-a0, -a1). */
.L11: /* Compute __udivdi3(a0, -a1), then negate the result. */
neg a1, a1
.L12:
move t0, ra
jal HIDDEN_JUMPTARGET(__udivdi3)
neg a0, a0
jr t0
FUNC_END (__divdi3)
FUNC_BEGIN (__moddi3)
move t0, ra
bltz a1, .L31
bltz a0, .L32
.L30:
jal HIDDEN_JUMPTARGET(__udivdi3) /* The dividend is not negative. */
move a0, a1
jr t0
.L31:
neg a1, a1
bgez a0, .L30
.L32:
neg a0, a0
jal HIDDEN_JUMPTARGET(__udivdi3) /* The dividend is hella negative. */
neg a0, a1
jr t0
FUNC_END (__moddi3)
#if __riscv_xlen == 64
/* continuation of __divsi3 */
.L20:
sll t0, t0, 31
bne a0, t0, __divdi3
ret
FUNC_END (__divsi3)
#endif

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/* Header file for libgcc2.c. */
/* Copyright (C) 2000-2022 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_LIBGCC2_H
#define GCC_LIBGCC2_H
#include <stddef.h>
#define MIN_UNITS_PER_WORD (__riscv_xlen / 8)
#ifndef HIDE_EXPORTS
#pragma GCC visibility push(default)
#endif
extern int __gcc_bcmp (const unsigned char *, const unsigned char *, size_t);
extern void __clear_cache (void *, void *);
extern void __eprintf (const char *, const char *, unsigned int, const char *)
__attribute__ ((__noreturn__));
#ifdef __LIBGCC_HAS_HF_MODE__
#define LIBGCC2_HAS_HF_MODE 1
#else
#define LIBGCC2_HAS_HF_MODE 0
#endif
#ifdef __LIBGCC_HAS_SF_MODE__
#define LIBGCC2_HAS_SF_MODE 1
#else
#define LIBGCC2_HAS_SF_MODE 0
#endif
#ifdef __LIBGCC_HAS_DF_MODE__
#define LIBGCC2_HAS_DF_MODE 1
#else
#define LIBGCC2_HAS_DF_MODE 0
#endif
#ifdef __LIBGCC_HAS_XF_MODE__
#define LIBGCC2_HAS_XF_MODE 1
#else
#define LIBGCC2_HAS_XF_MODE 0
#endif
#ifdef __LIBGCC_HAS_TF_MODE__
#define LIBGCC2_HAS_TF_MODE 1
#else
#define LIBGCC2_HAS_TF_MODE 0
#endif
#ifndef __LIBGCC_SF_MANT_DIG__
#if LIBGCC2_HAS_SF_MODE
#error __LIBGCC_SF_MANT_DIG__ not defined
#else
#define __LIBGCC_SF_MANT_DIG__ 0
#endif
#endif
#ifndef __LIBGCC_DF_MANT_DIG__
#if LIBGCC2_HAS_DF_MODE
#error __LIBGCC_DF_MANT_DIG__ not defined
#else
#define __LIBGCC_DF_MANT_DIG__ 0
#endif
#endif
#ifndef __LIBGCC_XF_MANT_DIG__
#if LIBGCC2_HAS_XF_MODE
#error __LIBGCC_XF_MANT_DIG__ not defined
#else
#define __LIBGCC_XF_MANT_DIG__ 0
#endif
#endif
#ifndef __LIBGCC_TF_MANT_DIG__
#if LIBGCC2_HAS_TF_MODE
#error __LIBGCC_TF_MANT_DIG__ not defined
#else
#define __LIBGCC_TF_MANT_DIG__ 0
#endif
#endif
/* FIXME: This #ifdef probably should be removed, ie. enable the test
for mips too. */
/* Don't use IBM Extended Double TFmode for TI->SF calculations.
The conversion from long double to float suffers from double
rounding, because we convert via double. In other cases, going
through the software fp routines is much slower than the fallback. */
#ifdef __powerpc__
#define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE == 106)
#elif defined(WIDEST_HARDWARE_FP_SIZE)
#define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE > WIDEST_HARDWARE_FP_SIZE)
#else
#define AVOID_FP_TYPE_CONVERSION(SIZE) 0
#endif
/* In the first part of this file, we are interfacing to calls generated
by the compiler itself. These calls pass values into these routines
which have very specific modes (rather than very specific types), and
these compiler-generated calls also expect any return values to have
very specific modes (rather than very specific types). Thus, we need
to avoid using regular C language type names in this part of the file
because the sizes for those types can be configured to be anything.
Instead we use the following special type names. */
typedef int QItype __attribute__ ((mode (QI)));
typedef unsigned int UQItype __attribute__ ((mode (QI)));
typedef int HItype __attribute__ ((mode (HI)));
typedef unsigned int UHItype __attribute__ ((mode (HI)));
#if MIN_UNITS_PER_WORD > 1
/* These typedefs are usually forbidden on dsp's with UNITS_PER_WORD 1. */
typedef int SItype __attribute__ ((mode (SI)));
typedef unsigned int USItype __attribute__ ((mode (SI)));
#if __SIZEOF_LONG_LONG__ > 4
/* These typedefs are usually forbidden on archs with UNITS_PER_WORD 2. */
typedef int DItype __attribute__ ((mode (DI)));
typedef unsigned int UDItype __attribute__ ((mode (DI)));
#if MIN_UNITS_PER_WORD > 4
/* These typedefs are usually forbidden on archs with UNITS_PER_WORD 4. */
typedef int TItype __attribute__ ((mode (TI)));
typedef unsigned int UTItype __attribute__ ((mode (TI)));
#endif
#endif
#endif
#if LIBGCC2_HAS_HF_MODE
typedef float HFtype __attribute__ ((mode (HF)));
typedef _Complex float HCtype __attribute__ ((mode (HC)));
#endif
#if LIBGCC2_HAS_SF_MODE
typedef float SFtype __attribute__ ((mode (SF)));
typedef _Complex float SCtype __attribute__ ((mode (SC)));
#endif
#if LIBGCC2_HAS_DF_MODE
typedef float DFtype __attribute__ ((mode (DF)));
typedef _Complex float DCtype __attribute__ ((mode (DC)));
#endif
#if LIBGCC2_HAS_XF_MODE
typedef float XFtype __attribute__ ((mode (XF)));
typedef _Complex float XCtype __attribute__ ((mode (XC)));
#endif
#if LIBGCC2_HAS_TF_MODE
typedef float TFtype __attribute__ ((mode (TF)));
typedef _Complex float TCtype __attribute__ ((mode (TC)));
#endif
typedef int cmp_return_type; // __attribute__((mode (__libgcc_cmp_return__)));
typedef int shift_count_type; // __attribute__((mode (__libgcc_shift_count__)));
/* Make sure that we don't accidentally use any normal C language built-in
type names in the first part of this file. Instead we want to use *only*
the type names defined above. The following macro definitions insure
that if we *do* accidentally use some normal C language built-in type name,
we will get a syntax error. */
#define char bogus_type
#define short bogus_type
#define int bogus_type
#define long bogus_type
#define unsigned bogus_type
#define float bogus_type
#define double bogus_type
/* Versions prior to 3.4.4 were not taking into account the word size for
the 5 trapping arithmetic functions absv, addv, subv, mulv and negv. As
a consequence, the si and di variants were always and the only ones emitted.
To maintain backward compatibility, COMPAT_SIMODE_TRAPPING_ARITHMETIC is
defined on platforms where it makes sense to still have the si variants
emitted. As a bonus, their implementation is now correct. Note that the
same mechanism should have been implemented for the di variants, but it
turns out that no platform would define COMPAT_DIMODE_TRAPPING_ARITHMETIC
if it existed. */
#if LIBGCC2_UNITS_PER_WORD == 8
#define W_TYPE_SIZE (8 * __CHAR_BIT__)
#define Wtype DItype
#define UWtype UDItype
#define HWtype DItype
#define UHWtype UDItype
#define DWtype TItype
#define UDWtype UTItype
#ifdef LIBGCC2_GNU_PREFIX
#define __NW(a,b) __gnu_ ## a ## di ## b
#define __NDW(a,b) __gnu_ ## a ## ti ## b
#else
#define __NW(a,b) __ ## a ## di ## b
#define __NDW(a,b) __ ## a ## ti ## b
#endif
#define COMPAT_SIMODE_TRAPPING_ARITHMETIC
#elif LIBGCC2_UNITS_PER_WORD == 4
#define W_TYPE_SIZE (4 * __CHAR_BIT__)
#define Wtype SItype
#define UWtype USItype
#define HWtype SItype
#define UHWtype USItype
#define DWtype DItype
#define UDWtype UDItype
#ifdef LIBGCC2_GNU_PREFIX
#define __NW(a,b) __gnu_ ## a ## si ## b
#define __NDW(a,b) __gnu_ ## a ## di ## b
#else
#define __NW(a,b) __ ## a ## si ## b
#define __NDW(a,b) __ ## a ## di ## b
#endif
#elif LIBGCC2_UNITS_PER_WORD == 2
#define W_TYPE_SIZE (2 * __CHAR_BIT__)
#define Wtype HItype
#define UWtype UHItype
#define HWtype HItype
#define UHWtype UHItype
#define DWtype SItype
#define UDWtype USItype
#ifdef LIBGCC2_GNU_PREFIX
#define __NW(a,b) __gnu_ ## a ## hi ## b
#define __NDW(a,b) __gnu_ ## a ## si ## b
#else
#define __NW(a,b) __ ## a ## hi ## b
#define __NDW(a,b) __ ## a ## si ## b
#endif
#else
#define W_TYPE_SIZE __CHAR_BIT__
#define Wtype QItype
#define UWtype UQItype
#define HWtype QItype
#define UHWtype UQItype
#define DWtype HItype
#define UDWtype UHItype
#ifdef LIBGCC2_GNU_PREFIX
#define __NW(a,b) __gnu_ ## a ## qi ## b
#define __NDW(a,b) __gnu_ ## a ## hi ## b
#else
#define __NW(a,b) __ ## a ## qi ## b
#define __NDW(a,b) __ ## a ## hi ## b
#endif
#endif
#ifdef LIBGCC2_GNU_PREFIX
#define __N(a) __gnu_ ## a
#else
#define __N(a) __ ## a
#endif
#define Wtype_MAX ((Wtype)(((UWtype)1 << (W_TYPE_SIZE - 1)) - 1))
#define Wtype_MIN (- Wtype_MAX - 1)
#if W_TYPE_SIZE == 8
# define Wtype_MAXp1_F 0x1p8f
#elif W_TYPE_SIZE == 16
# define Wtype_MAXp1_F 0x1p16f
#elif W_TYPE_SIZE == 32
# define Wtype_MAXp1_F 0x1p32f
#elif W_TYPE_SIZE == 64
# define Wtype_MAXp1_F 0x1p64f
#else
# error "expand the table"
#endif
#define __muldi3 __NDW(mul,3)
#define __divdi3 __NDW(div,3)
#define __udivdi3 __NDW(udiv,3)
#define __moddi3 __NDW(mod,3)
#define __umoddi3 __NDW(umod,3)
#define __negdi2 __NDW(neg,2)
#define __lshrdi3 __NDW(lshr,3)
#define __ashldi3 __NDW(ashl,3)
#define __ashrdi3 __NDW(ashr,3)
#define __cmpdi2 __NDW(cmp,2)
#define __ucmpdi2 __NDW(ucmp,2)
#define __divmoddi4 __NDW(divmod,4)
#define __udivmoddi4 __NDW(udivmod,4)
#define __fixunstfDI __NDW(fixunstf,)
#define __fixtfdi __NDW(fixtf,)
#define __fixunsxfDI __NDW(fixunsxf,)
#define __fixxfdi __NDW(fixxf,)
#define __fixunsdfDI __NDW(fixunsdf,)
#define __fixdfdi __NDW(fixdf,)
#define __fixunssfDI __NDW(fixunssf,)
#define __fixsfdi __NDW(fixsf,)
#define __floatdixf __NDW(float,xf)
#define __floatditf __NDW(float,tf)
#define __floatdidf __NDW(float,df)
#define __floatdisf __NDW(float,sf)
#define __floatundixf __NDW(floatun,xf)
#define __floatunditf __NDW(floatun,tf)
#define __floatundidf __NDW(floatun,df)
#define __floatundisf __NDW(floatun,sf)
#define __fixunsxfSI __NW(fixunsxf,)
#define __fixunstfSI __NW(fixunstf,)
#define __fixunsdfSI __NW(fixunsdf,)
#define __fixunssfSI __NW(fixunssf,)
#define __absvSI2 __NW(absv,2)
#define __addvSI3 __NW(addv,3)
#define __subvSI3 __NW(subv,3)
#define __mulvSI3 __NW(mulv,3)
#define __negvSI2 __NW(negv,2)
#define __absvDI2 __NDW(absv,2)
#define __addvDI3 __NDW(addv,3)
#define __subvDI3 __NDW(subv,3)
#define __mulvDI3 __NDW(mulv,3)
#define __negvDI2 __NDW(negv,2)
#define __ffsSI2 __NW(ffs,2)
#define __clzSI2 __NW(clz,2)
#define __ctzSI2 __NW(ctz,2)
#define __clrsbSI2 __NW(clrsb,2)
#define __popcountSI2 __NW(popcount,2)
#define __paritySI2 __NW(parity,2)
#define __ffsDI2 __NDW(ffs,2)
#define __clzDI2 __NDW(clz,2)
#define __ctzDI2 __NDW(ctz,2)
#define __clrsbDI2 __NDW(clrsb,2)
#define __popcountDI2 __NDW(popcount,2)
#define __parityDI2 __NDW(parity,2)
#define __clz_tab __N(clz_tab)
#define __bswapsi2 __N(bswapsi2)
#define __bswapdi2 __N(bswapdi2)
#define __udiv_w_sdiv __N(udiv_w_sdiv)
#define __clear_cache __N(clear_cache)
#define __enable_execute_stack __N(enable_execute_stack)
#ifndef __powisf2
#define __powisf2 __N(powisf2)
#endif
#ifndef __powidf2
#define __powidf2 __N(powidf2)
#endif
#ifndef __powitf2
#define __powitf2 __N(powitf2)
#endif
#ifndef __powixf2
#define __powixf2 __N(powixf2)
#endif
#ifndef __mulsc3
#define __mulsc3 __N(mulsc3)
#endif
#ifndef __muldc3
#define __muldc3 __N(muldc3)
#endif
#ifndef __mulxc3
#define __mulxc3 __N(mulxc3)
#endif
#ifndef __multc3
#define __multc3 __N(multc3)
#endif
#ifndef __divsc3
#define __divsc3 __N(divsc3)
#endif
#ifndef __divdc3
#define __divdc3 __N(divdc3)
#endif
#ifndef __divxc3
#define __divxc3 __N(divxc3)
#endif
#ifndef __divtc3
#define __divtc3 __N(divtc3)
#endif
extern DWtype __muldi3 (DWtype, DWtype);
extern DWtype __divdi3 (DWtype, DWtype);
extern UDWtype __udivdi3 (UDWtype, UDWtype);
extern UDWtype __umoddi3 (UDWtype, UDWtype);
extern DWtype __moddi3 (DWtype, DWtype);
extern DWtype __divmoddi4 (DWtype, DWtype, DWtype *);
/* __udivmoddi4 is static inline when building other libgcc2 portions. */
#if (!defined (L_udivdi3) && !defined (L_divdi3) && \
!defined (L_umoddi3) && !defined (L_moddi3) && \
!defined (L_divmoddi4))
extern UDWtype __udivmoddi4 (UDWtype, UDWtype, UDWtype *);
#endif
/* __negdi2 is static inline when building other libgcc2 portions. */
#if !defined(L_divdi3) && !defined(L_moddi3)
extern DWtype __negdi2 (DWtype);
#endif
extern DWtype __lshrdi3 (DWtype, shift_count_type);
extern DWtype __ashldi3 (DWtype, shift_count_type);
extern DWtype __ashrdi3 (DWtype, shift_count_type);
/* __udiv_w_sdiv is static inline when building other libgcc2 portions. */
#if (!defined(L_udivdi3) && !defined(L_divdi3) && \
!defined(L_umoddi3) && !defined(L_moddi3))
extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype);
#endif
extern cmp_return_type __cmpdi2 (DWtype, DWtype);
extern cmp_return_type __ucmpdi2 (UDWtype, UDWtype);
#if MIN_UNITS_PER_WORD > 1
extern SItype __bswapsi2 (SItype);
#endif
#if __SIZEOF_LONG_LONG__ > 4
extern DItype __bswapdi2 (DItype);
#endif
extern Wtype __absvSI2 (Wtype);
extern Wtype __addvSI3 (Wtype, Wtype);
extern Wtype __subvSI3 (Wtype, Wtype);
extern Wtype __mulvSI3 (Wtype, Wtype);
extern Wtype __negvSI2 (Wtype);
extern DWtype __absvDI2 (DWtype);
extern DWtype __addvDI3 (DWtype, DWtype);
extern DWtype __subvDI3 (DWtype, DWtype);
extern DWtype __mulvDI3 (DWtype, DWtype);
extern DWtype __negvDI2 (DWtype);
#ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC
#define __absvsi2 __N(absvsi2)
#define __negvsi2 __N(negvsi2)
#define __addvsi3 __N(addvsi3)
#define __subvsi3 __N(subvsi3)
#define __mulvsi3 __N(mulvsi3)
extern SItype __absvsi2 (SItype);
extern SItype __addvsi3 (SItype, SItype);
extern SItype __subvsi3 (SItype, SItype);
extern SItype __mulvsi3 (SItype, SItype);
extern SItype __negvsi2 (SItype);
#endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */
#undef int
#if LIBGCC2_HAS_HF_MODE
extern HCtype __divhc3 (HFtype, HFtype, HFtype, HFtype);
extern HCtype __mulhc3 (HFtype, HFtype, HFtype, HFtype);
#endif
#if LIBGCC2_HAS_SF_MODE
extern DWtype __fixsfdi (SFtype);
extern SFtype __floatdisf (DWtype);
extern SFtype __floatundisf (UDWtype);
extern UWtype __fixunssfSI (SFtype);
extern UDWtype __fixunssfDI (SFtype);
extern SFtype __powisf2 (SFtype, int);
extern SCtype __divsc3 (SFtype, SFtype, SFtype, SFtype);
extern SCtype __mulsc3 (SFtype, SFtype, SFtype, SFtype);
#endif
#if LIBGCC2_HAS_DF_MODE
extern DWtype __fixdfdi (DFtype);
extern DFtype __floatdidf (DWtype);
extern DFtype __floatundidf (UDWtype);
extern UWtype __fixunsdfSI (DFtype);
extern UDWtype __fixunsdfDI (DFtype);
extern DFtype __powidf2 (DFtype, int);
extern DCtype __divdc3 (DFtype, DFtype, DFtype, DFtype);
extern DCtype __muldc3 (DFtype, DFtype, DFtype, DFtype);
#endif
#if LIBGCC2_HAS_XF_MODE
extern DWtype __fixxfdi (XFtype);
extern UDWtype __fixunsxfDI (XFtype);
extern XFtype __floatdixf (DWtype);
extern XFtype __floatundixf (UDWtype);
extern UWtype __fixunsxfSI (XFtype);
extern XFtype __powixf2 (XFtype, int);
extern XCtype __divxc3 (XFtype, XFtype, XFtype, XFtype);
extern XCtype __mulxc3 (XFtype, XFtype, XFtype, XFtype);
#endif
#if LIBGCC2_HAS_TF_MODE
extern UDWtype __fixunstfDI (TFtype);
extern DWtype __fixtfdi (TFtype);
extern TFtype __floatditf (DWtype);
extern TFtype __floatunditf (UDWtype);
extern TFtype __powitf2 (TFtype, int);
extern TCtype __divtc3 (TFtype, TFtype, TFtype, TFtype);
extern TCtype __multc3 (TFtype, TFtype, TFtype, TFtype);
#endif
#define int bogus_type
/* DWstructs are pairs of Wtype values in the order determined by
__BYTE_ORDER__. */
#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
struct DWstruct {Wtype high, low;};
#else
struct DWstruct {Wtype low, high;};
#endif
/* We need this union to unpack/pack DImode values, since we don't have
any arithmetic yet. Incoming DImode parameters are stored into the
`ll' field, and the unpacked result is read from the struct `s'. */
typedef union
{
struct DWstruct s;
DWtype ll;
} DWunion;
/* Defined for L_popcount_tab. Exported here because some targets may
want to use it for their own versions of the __popcount builtins. */
extern const UQItype __popcount_tab[256];
/* Defined for L_clz. Exported here because some targets may want to use
it for their own versions of the __clz builtins. It contains the bit
position of the first set bit for the numbers 0 - 255. This avoids the
need for a separate table for the __ctz builtins. */
extern const UQItype __clz_tab[256];
#include "longlong.h"
#undef int
extern int __clzDI2 (UDWtype);
extern int __clzSI2 (UWtype);
extern int __ctzSI2 (UWtype);
extern int __ctzDI2 (UDWtype);
extern int __clrsbSI2 (Wtype);
extern int __clrsbDI2 (DWtype);
extern int __ffsSI2 (UWtype);
extern int __ffsDI2 (DWtype);
extern int __popcountSI2 (UWtype);
extern int __popcountDI2 (UDWtype);
extern int __paritySI2 (UWtype);
extern int __parityDI2 (UDWtype);
#define int bogus_type
extern void __enable_execute_stack (void *);
#ifndef HIDE_EXPORTS
#pragma GCC visibility pop
#endif
#endif /* ! GCC_LIBGCC2_H */

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/* Integer multiplication routines for RISC-V.
Copyright (C) 2016-2022 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#include "riscv-asm.h"
.text
.align 2
#if __riscv_xlen == 32
/* Our RV64 64-bit routine is equivalent to our RV32 32-bit routine. */
# define __muldi3 __mulsi3
#endif
FUNC_BEGIN (__muldi3)
mv a2, a0
li a0, 0
.L1:
andi a3, a1, 1
beqz a3, .L2
add a0, a0, a2
.L2:
srli a1, a1, 1
slli a2, a2, 1
bnez a1, .L1
ret
FUNC_END (__muldi3)

86
am/src/riscv/ysyxsoc/libgcc/multi3.c Normal file
View file

@ -0,0 +1,86 @@
/* Multiplication two double word integers for RISC-V.
Copyright (C) 2016-2022 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
//#include "tconfig.h"
//#include "tsystem.h"
//#include "coretypes.h"
//#include "tm.h"
//#include "libgcc_tm.h"
#define LIBGCC2_UNITS_PER_WORD (__riscv_xlen / 8)
#include "libgcc2.h"
#if __riscv_xlen == 32
/* Our RV64 64-bit routines are equivalent to our RV32 32-bit routines. */
# define __multi3 __muldi3
#endif
DWtype
__multi3 (DWtype u, DWtype v)
{
const DWunion uu = {.ll = u};
const DWunion vv = {.ll = v};
DWunion w;
UWtype u_low = uu.s.low;
UWtype v_low = vv.s.low;
UWtype u_low_msb;
UWtype w_low = 0;
UWtype new_w_low;
UWtype w_high = 0;
UWtype w_high_tmp = 0;
UWtype w_high_tmp2x;
UWtype carry;
/* Calculate low half part of u and v, and get a UDWtype result just like
what __umulsidi3 do. */
do
{
new_w_low = w_low + u_low;
w_high_tmp2x = w_high_tmp << 1;
w_high_tmp += w_high;
if (v_low & 1)
{
carry = new_w_low < w_low;
w_low = new_w_low;
w_high = carry + w_high_tmp;
}
u_low_msb = (u_low >> ((sizeof (UWtype) * 8) - 1));
v_low >>= 1;
u_low <<= 1;
w_high_tmp = u_low_msb | w_high_tmp2x;
}
while (v_low);
w.s.low = w_low;
w.s.high = w_high;
if (uu.s.high)
w.s.high = w.s.high + __muluw3(vv.s.low, uu.s.high);
if (vv.s.high)
w.s.high += __muluw3(uu.s.low, vv.s.high);
return w.ll;
}

41
am/src/riscv/ysyxsoc/libgcc/riscv-asm.h Normal file
View file

@ -0,0 +1,41 @@
/* Copyright (C) 2017-2022 Free Software Foundation, Inc.
This file is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3, or (at your option) any
later version.
This file is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#define FUNC_TYPE(X) .type X,@function
#define FUNC_SIZE(X) .size X,.-X
#define FUNC_BEGIN(X) \
.globl X; \
FUNC_TYPE (X); \
X:
#define FUNC_END(X) \
FUNC_SIZE(X)
#define FUNC_ALIAS(X,Y) \
.globl X; \
X = Y
#define CONCAT1(a, b) CONCAT2(a, b)
#define CONCAT2(a, b) a ## b
#define HIDDEN_JUMPTARGET(X) CONCAT1(__hidden_, X)
#define HIDDEN_DEF(X) FUNC_ALIAS(HIDDEN_JUMPTARGET(X), X); \
.hidden HIDDEN_JUMPTARGET(X)

5
am/src/riscv/ysyxsoc/libgcc/unused.c Normal file
View file

@ -0,0 +1,5 @@
#include <klib-macros.h>
#include <am.h>
double __muldf3 (double a, double b) { panic("Not implement"); }
long __fixdfdi (double a) { panic("Not implement"); }

17
am/src/riscv/ysyxsoc/mpe.c Normal file
View file

@ -0,0 +1,17 @@
#include <am.h>
bool mpe_init(void (*entry)()) {
return false;
}
int cpu_count() {
return 1;
}
int cpu_current() {
return 0;
}
int atomic_xchg(int *addr, int newval) {
return 0;
}

8
am/src/riscv/ysyxsoc/start.S Normal file
View file

@ -0,0 +1,8 @@
.section entry, "ax"
.globl _start
.type _start, @function
_start:
mv s0, zero
la sp, _stack_pointer
jal _trm_init

28
am/src/riscv/ysyxsoc/timer.c Normal file
View file

@ -0,0 +1,28 @@
#include "amdev.h"
#include "riscv/riscv.h"
#include <am.h>
#include <stdint.h>
#define RTC_ADDR 0xa0000048
static uint64_t up = 0;
void __am_timer_uptime(AM_TIMER_UPTIME_T *uptime) {
uint32_t h = inl(RTC_ADDR + 4);
uint32_t l = inl(RTC_ADDR);
uint64_t time = (uint64_t)h << 32 | l;
uptime->us = time - up;
}
void __am_timer_init() {
uint32_t h = inl(RTC_ADDR + 4);
uint32_t l = inl(RTC_ADDR);
up = (uint64_t)h << 32 | l;
}
void __am_timer_rtc(AM_TIMER_RTC_T *rtc) {
rtc->second = 0;
rtc->minute = 0;
rtc->hour = 0;
rtc->day = 0;
rtc->month = 0;
rtc->year = 1900;
}

67
am/src/riscv/ysyxsoc/trap.S Normal file
View file

@ -0,0 +1,67 @@
#define concat_temp(x, y) x ## y
#define concat(x, y) concat_temp(x, y)
#define MAP(c, f) c(f)
#if __riscv_xlen == 32
#define LOAD lw
#define STORE sw
#define XLEN 4
#else
#define LOAD ld
#define STORE sd
#define XLEN 8
#endif
#define REGS_LO16(f) \
f( 1) f( 3) f( 4) f( 5) f( 6) f( 7) f( 8) f( 9) \
f(10) f(11) f(12) f(13) f(14) f(15)
#ifndef __riscv_e
#define REGS_HI16(f) \
f(16) f(17) f(18) f(19) \
f(20) f(21) f(22) f(23) f(24) f(25) f(26) f(27) f(28) f(29) \
f(30) f(31)
#define NR_REGS 32
#else
#define REGS_HI16(f)
#define NR_REGS 16
#endif
#define REGS(f) REGS_LO16(f) REGS_HI16(f)
#define PUSH(n) STORE concat(x, n), (n * XLEN)(sp);
#define POP(n) LOAD concat(x, n), (n * XLEN)(sp);
#define CONTEXT_SIZE ((NR_REGS + 3 + 1) * XLEN)
#define OFFSET_SP ( 2 * XLEN)
#define OFFSET_CAUSE ((NR_REGS + 0) * XLEN)
#define OFFSET_STATUS ((NR_REGS + 1) * XLEN)
#define OFFSET_EPC ((NR_REGS + 2) * XLEN)
.align 3
.globl __am_asm_trap
__am_asm_trap:
addi sp, sp, -CONTEXT_SIZE
MAP(REGS, PUSH)
csrr t0, mcause
csrr t1, mstatus
csrr t2, mepc
STORE t0, OFFSET_CAUSE(sp)
STORE t1, OFFSET_STATUS(sp)
STORE t2, OFFSET_EPC(sp)
mv a0, sp
jal __am_irq_handle
mv sp, a0
LOAD t1, OFFSET_STATUS(sp)
LOAD t2, OFFSET_EPC(sp)
csrw mstatus, t1
csrw mepc, t2
MAP(REGS, POP)
addi sp, sp, CONTEXT_SIZE
mret

76
am/src/riscv/ysyxsoc/trm.c Normal file
View file

@ -0,0 +1,76 @@
#include "riscv/riscv.h"
#include <am.h>
#include <klib-macros.h>
#include <stdint.h>
#include <string.h>
#define HEAP_SIZE 0x1000
extern char _heap_start;
int main(const char *args);
Area heap = RANGE(&_heap_start, &_heap_start + HEAP_SIZE);
#ifndef MAINARGS
#define MAINARGS ""
#endif
static const char mainargs[] = MAINARGS;
void uart_16550_init(void) {
#define UART_BASE 0x10000000U
#define UART_TX 0
#define UART_DLL 0
#define UART_IER 1
#define UART_DLM 1
#define UART_FCR 2
#define UART_LCR 3
#define UART_LSR 5
//1. set the Line Control Register to the desired line control parameters.
//Set bit 7 to '1' to allow access to the Divisor Latches.
outb(UART_BASE + UART_LCR, 0b10000111);
//2. Set the Divisor Latches, MSB first, LSB next. We don't care the value at present.
#define BATE_RATE 115200
#define CLK_FREQ 3686400
uint16_t divisor = CLK_FREQ / ( 16 * BATE_RATE );
//uint16_t divisor = 20;
outb(UART_BASE + UART_DLM, divisor >> 8);
outb(UART_BASE + UART_DLL, divisor);
//3. Set the bit '7' of LCR to '0' to disable access to Divisor Latches.
outb(UART_BASE + UART_LCR, 0b00000111);
//4. Set the FIFO trigger level.
outb(UART_BASE + UART_FCR, 0b11000111);
//5. Enable desired interrupts.
outb(UART_BASE + UART_IER, 0b00000000);
}
void putch(char ch) {
//Check the status of the send queue before output.
while(!(inb(UART_BASE + UART_LSR) & 0b00100000));
outb(UART_BASE + UART_TX, ch);
}
void halt(int code) {
asm volatile("mv a0, %0; ebreak" :: "r"(code));
while (1);
}
void clear_bss(void) {
extern char _sbss;
extern char _ebss;
memset(&_sbss, 0, &_ebss - &_sbss);
}
extern char _sdata;
extern char _data_size;
extern char _data_load_start;
void _trm_init() {
memcpy(&_sdata, &_data_load_start, (size_t)&_data_size);
clear_bss();
uart_16550_init();
int ret = main(mainargs);
halt(ret);
}

18
am/src/riscv/ysyxsoc/vme.c Normal file
View file

@ -0,0 +1,18 @@
#include <am.h>
bool vme_init(void* (*pgalloc_f)(int), void (*pgfree_f)(void*)) {
return false;
}
void protect(AddrSpace *as) {
}
void unprotect(AddrSpace *as) {
}
void map(AddrSpace *as, void *va, void *pa, int prot) {
}
Context *ucontext(AddrSpace *as, Area kstack, void *entry) {
return NULL;
}

20
am/src/x86/qemu/boot/main.c
View file

@ -64,29 +64,27 @@ static void load_elf32(Elf32_Ehdr *elf) {
}
void load_kernel(void) {
union {
Elf32_Ehdr elf32;
Elf64_Ehdr elf64;
} *u = (void *)0x8000;
Elf32_Ehdr *elf32 = (void *)0x8000;
Elf64_Ehdr *elf64 = (void *)0x8000;
int is_ap = boot_record()->is_ap;
if (!is_ap) {
// load argument (string) to memory
copy_from_disk((void *)MAINARG_ADDR, 1024, -1024);
// load elf header to memory
copy_from_disk(u, 4096, 0);
if (u->elf32.e_machine == EM_X86_64) {
load_elf64(&u->elf64);
copy_from_disk(elf32, 4096, 0);
if (elf32->e_machine == EM_X86_64) {
load_elf64(elf64);
} else {
load_elf32(&u->elf32);
load_elf32(elf32);
}
} else {
// everything should be loaded
}
if (u->elf32.e_machine == EM_X86_64) {
((void(*)())(uint32_t)(u->elf64.e_entry))();
if (elf32->e_machine == EM_X86_64) {
((void(*)())(uint32_t)elf64->e_entry)();
} else {
((void(*)())(uint32_t)(u->elf32.e_entry))();
((void(*)())(uint32_t)elf32->e_entry)();
}
}

64
klib/include/klib.h
View file

@ -2,8 +2,8 @@
#define KLIB_H__
#include <am.h>
#include <stddef.h>
#include <stdarg.h>
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
@ -12,43 +12,45 @@ extern "C" {
//#define __NATIVE_USE_KLIB__
// string.h
void *memset (void *s, int c, size_t n);
void *memcpy (void *dst, const void *src, size_t n);
void *memmove (void *dst, const void *src, size_t n);
int memcmp (const void *s1, const void *s2, size_t n);
size_t strlen (const char *s);
char *strcat (char *dst, const char *src);
char *strcpy (char *dst, const char *src);
char *strncpy (char *dst, const char *src, size_t n);
int strcmp (const char *s1, const char *s2);
int strncmp (const char *s1, const char *s2, size_t n);
char *stpcpy(char *dst, const char *src);
char *stpncpy(char *dst, const char *src, size_t n);
void *memset(void *s, int c, size_t n);
void *memcpy(void *dst, const void *src, size_t n);
void *memmove(void *dst, const void *src, size_t n);
int memcmp(const void *s1, const void *s2, size_t n);
size_t strlen(const char *s);
char *strcat(char *dst, const char *src);
char *strcpy(char *dst, const char *src);
char *strncpy(char *dst, const char *src, size_t n);
int strcmp(const char *s1, const char *s2);
int strncmp(const char *s1, const char *s2, size_t n);
// stdlib.h
void srand (unsigned int seed);
int rand (void);
void *malloc (size_t size);
void free (void *ptr);
int abs (int x);
int atoi (const char *nptr);
//stdlib.h
void srand(unsigned int seed);
int rand(void);
void *malloc(size_t size);
void free(void *ptr);
int abs(int x);
int atoi(const char *nptr);
// stdio.h
int printf (const char *format, ...);
int sprintf (char *str, const char *format, ...);
int snprintf (char *str, size_t size, const char *format, ...);
int vsprintf (char *str, const char *format, va_list ap);
int vsnprintf (char *str, size_t size, const char *format, va_list ap);
int printf(const char *format, ...);
int sprintf(char *str, const char *format, ...);
int snprintf(char *str, size_t size, const char *format, ...);
int vsprintf(char *str, const char *format, va_list ap);
int vsnprintf(char *str, size_t size, const char *format, va_list ap);
// assert.h
#ifdef NDEBUG
#define assert(ignore) ((void)0)
#define assert(ignore) ((void)0)
#else
#define assert(cond) \
do { \
if (!(cond)) { \
printf("Assertion fail at %s:%d\n", __FILE__, __LINE__); \
halt(1); \
} \
} while (0)
#define assert(cond) \
do { \
if (!(cond)) { \
printf("Assertion fail at %s:%d\n", __FILE__, __LINE__); \
halt(1); \
} \
} while (0)
#endif
#ifdef __cplusplus

124
klib/src/stdio.c
View file

@ -1,28 +1,138 @@
#include <am.h>
#include <klib.h>
#include <klib-macros.h>
#include <klib.h>
#include <limits.h>
#include <stdarg.h>
#include <stdbool.h>
#if !defined(__ISA_NATIVE__) || defined(__NATIVE_USE_KLIB__)
static int int2str(char *p, int v, size_t n) {
if (n == 0 || p == NULL)
return 0;
if (v == 0) {
*p = '0';
return 1;
}
if (v == INT_MIN) {
return stpncpy(p, "-2147483648", n) - p;
}
const char *const s = p;
int idx = 0;
char buf[16] = {0};
int tmp = abs(v);
while (tmp != 0) {
buf[idx] = tmp % 10 + '0';
tmp /= 10;
idx++;
}
if(v < 0 && n > 0) {
*p = '-';
n--;
p++;
}
idx--;
while (idx >= 0 && n > 0) {
*p = buf[idx];
p++;
idx--;
n--;
}
return p - s;
}
int printf(const char *fmt, ...) {
panic("Not implemented");
char buf[1024] = {0};
va_list ap;
va_start(ap, fmt);
int n = vsnprintf(buf, 1024, fmt, ap);
va_end(ap);
for (size_t i = 0; i < n; i++) {
putch(buf[i]);
}
return n;
}
int vsprintf(char *out, const char *fmt, va_list ap) {
panic("Not implemented");
return vsnprintf(out, -1, fmt, ap);
}
int sprintf(char *out, const char *fmt, ...) {
panic("Not implemented");
va_list ap;
va_start(ap, fmt);
int res = vsprintf(out, fmt, ap);
va_end(ap);
return res;
}
int snprintf(char *out, size_t n, const char *fmt, ...) {
panic("Not implemented");
va_list ap;
va_start(ap, fmt);
int res = vsnprintf(out, n, fmt, ap);
va_end(ap);
return res;
}
int vsnprintf(char *out, size_t n, const char *fmt, va_list ap) {
panic("Not implemented");
int vsnprintf(char *out, size_t n, const char *fmt, va_list ap1) {
size_t count = 0;
va_list ap;
va_copy(ap, ap1);
while (count < n - 1 && *fmt != '\0') {
switch (*fmt) {
case '%': {
fmt++;
if (*fmt == '%') {
*out = *fmt;
out++;
fmt++;
count++;
} else if (*fmt == 's') {
char *p = va_arg(ap, char *);
while (count < n - 1 && *p) {
*out = *p;
out++;
count++;
p++;
}
fmt++;
} else if (*fmt == 'd') {
int v = va_arg(ap, int);
int int_num = int2str(out, v, n - 1 - count);
count += int_num;
out += int_num;
fmt++;
} else if(*fmt == 'c'){
char c = (char)va_arg(ap, int);
*out = c;
out++;
count++;
fmt++;
}
else {
//panic("not implemented");
fmt++;
}
break;
}
default:
*out = *fmt;
out++;
fmt++;
count++;
}
}
*out = '\0';
return count;
}
#endif

18
klib/src/stdlib.c
View file

@ -4,7 +4,9 @@
#if !defined(__ISA_NATIVE__) || defined(__NATIVE_USE_KLIB__)
static unsigned long int next = 1;
#if defined(__ISA_RISCV32__) || defined (__ISA_RISCV32E__) || defined(__ISA_RISCV64__)
void *heap_alloc_ptr = NULL;
#endif
int rand(void) {
// RAND_MAX assumed to be 32767
next = next * 1103515245 + 12345;
@ -34,9 +36,19 @@ void *malloc(size_t size) {
// Therefore do not call panic() here, else it will yield a dead recursion:
// panic() -> putchar() -> (glibc) -> malloc() -> panic()
#if !(defined(__ISA_NATIVE__) && defined(__NATIVE_USE_KLIB__))
panic("Not implemented");
#if defined (__ISA_RISCV32__) || defined (__ISA_RISCV32E__)
void *p = heap_alloc_ptr;
heap_alloc_ptr = (void*)ROUNDUP(heap_alloc_ptr + size, 4);
panic_on(!IN_RANGE(heap_alloc_ptr, heap), "Heap overflow");
return p;
#else
panic("not implemented");
#endif
#else
return NULL;
#endif
return NULL;
}
void free(void *ptr) {

140
klib/src/string.c
View file

@ -1,47 +1,155 @@
#include <klib.h>
#include <klib-macros.h>
#include <klib.h>
#include <stddef.h>
#include <stdint.h>
#if !defined(__ISA_NATIVE__) || defined(__NATIVE_USE_KLIB__)
size_t strlen(const char *s) {
panic("Not implemented");
if (s == NULL)
return 0;
size_t count = 0;
while (*s != '\0') {
count++;
s++;
}
return count;
}
char *strcpy(char *dst, const char *src) {
panic("Not implemented");
}
size_t i = 0;
while (src[i] != '\0') {
dst[i] = src[i];
i++;
}
dst[i] = '\0';
return dst;
}
char *stpncpy(char *dst, const char *src, size_t n) {
for (; n != 0 && (*dst = *src); src++, dst++, n--);
return dst;
}
// copied from musl
char *stpcpy(char *dst, const char *src) {
for (; (*dst = *src); src++, dst++)
;
return dst;
}
char *strncpy(char *dst, const char *src, size_t n) {
panic("Not implemented");
// If the specified size is less than or equal to the source string's length,
// strncpy doesn't not append a null terminator to the destination buffer.
for (size_t i = 0; i < n; i++) {
if (src[i] != '\0')
dst[i] = src[i];
else {
while (i < n) {
dst[i] = 0;
i++;
}
break;
}
}
return dst;
}
char *strcat(char *dst, const char *src) {
panic("Not implemented");
strcpy(dst + (strlen(dst)), src);
return dst;
}
int strcmp(const char *s1, const char *s2) {
panic("Not implemented");
}
int strcmp(const char *s1, const char *s2) { return strncmp(s1, s2, -1); }
// refer to musl, more elegant than mine
int strncmp(const char *s1, const char *s2, size_t n) {
panic("Not implemented");
unsigned char *l = (void *)s1, *r = (void *)s2;
if (!n--)
return 0;
while (n && *l && *r && *l == *r) {
l++;
r++;
n--;
}
return *l - *r;
}
void *memset(void *s, int c, size_t n) {
panic("Not implemented");
if (n == 0)
return s;
for (size_t i = 0; i < n; i++)
*((unsigned char *)s + i) = (unsigned char)c;
return s;
}
void *memmove(void *dst, const void *src, size_t n) {
panic("Not implemented");
if (dst == src)
return dst;
// A simple way to deal with overlap areas, improve in the future.
// Can I use malloc here ? Will buf area and other areas overlap? try to find
// a better way.
size_t s = (size_t)src;
size_t d = (size_t)dst;
if (s > d && (d + n - 1 >= s)) {
size_t overlap_n = d + n - s;
memcpy(dst, src, overlap_n);
memcpy((void *)(s + overlap_n), (void *)(d + overlap_n), n - overlap_n);
} else if (d > s && (s + n - 1 >= d)) {
size_t overlap_n = s + n - d;
memcpy((void *)(d + n - overlap_n), dst, overlap_n);
memcpy(dst, src, n - overlap_n);
} else {
memcpy(dst, src, n);
}
return dst;
}
void *memcpy(void *out, const void *in, size_t n) {
panic("Not implemented");
}
// Note that memcpy function require the memory areas do not overlap.
// Panic directly when the input is invalid to debug. It seems to violate the
// manual specifications.
if (out == in)
return out;
size_t dest = (size_t)out;
size_t src = (size_t)in;
int memcmp(const void *s1, const void *s2, size_t n) {
panic("Not implemented");
if ((dest > src && src + n - 1 < dest) ||
(src > dest && dest + n - 1 < src)) {
while (n != 0) {
*(char *)(dest + n - 1) = *(char *)(src + n - 1);
n--;
}
}
return out;
}
int memcmp(const void *s1, const void *s2, size_t n) {
if (n == 0)
return 0;
const unsigned char *a = s1;
const unsigned char *b = s2;
while (n != 0) {
if (*a == *b) {
a++;
b++;
n--;
continue;
} else {
return *a - *b;
}
}
return 0;
}
#endif

4
scripts/isa/riscv.mk
View file

@ -1,8 +1,8 @@
CROSS_COMPILE := riscv64-linux-gnu-
COMMON_CFLAGS := -fno-pic -march=rv64g -mcmodel=medany -mstrict-align
COMMON_CFLAGS := -fno-pic -march=rv64g -mcmodel=medany -mstrict-align
CFLAGS += $(COMMON_CFLAGS) -static
ASFLAGS += $(COMMON_CFLAGS) -O0
LDFLAGS += -melf64lriscv
LDFLAGS += -melf64lriscv -O2
# overwrite ARCH_H defined in $(AM_HOME)/Makefile
ARCH_H := arch/riscv.h

7
scripts/isa/riscv64.mk Normal file
View file

@ -0,0 +1,7 @@
# This file is from nutshell's am
CROSS_COMPILE := riscv64-unknown-linux-gnu-
COMMON_FLAGS := -fno-pic -march=rv64g -mcmodel=medany
CFLAGS += $(COMMON_FLAGS) -static
ASFLAGS += $(COMMON_FLAGS) -O0
LDFLAGS += -melf64lriscv
ARCH_H := arch/riscv.h

1
scripts/isa/x86.mk
View file

@ -1,6 +1,5 @@
export CROSS_COMPILE := x86_64-linux-gnu-
CFLAGS += -m32 -fno-pic -fno-omit-frame-pointer -march=i386
CFLAGS += -fcf-protection=none # remove endbr32 in Ubuntu 20.04 with a CPU newer than Comet Lake
CFLAGS += --param=min-pagesize=0 # fix warning about "array subscript 0 is outside array bounds"
ASFLAGS += -m32 -fno-pic
LDFLAGS += -melf_i386

1
scripts/isa/x86_64.mk
View file

@ -1,5 +1,4 @@
export CROSS_COMPILE := x86_64-linux-gnu-
CFLAGS += -m64 -fPIC -mno-sse
CFLAGS += --param=min-pagesize=0 # fix warning about "array subscript 0 is outside array bounds"
ASFLAGS += -m64 -fPIC
LDFLAGS += -melf_x86_64

41
scripts/linker-soc.ld Normal file
View file

@ -0,0 +1,41 @@
ENTRY(_start)
MEMORY {
mrom : ORIGIN = 0x20000000, LENGTH = 4K
sram : ORIGIN = 0x0f000000, LENGTH = 8K
}
SECTIONS {
.text : {
_stext = .;
*(entry);
*(.text*);
_etext = .;
} > mrom AT> mrom
.rodata : {
_srodata = .;
*(.rodata*);
*(.srodata*);
_erodata = .;
} > mrom AT> mrom
.data : {
_sdata = .;
*(.data*);
*(.sdata*);
_edata = .; /* Note that this is VMA */
} > sram AT> mrom
_data_size = SIZEOF(.data);
_data_load_start = LOADADDR(.data);
.bss : {
_sbss = .;
*(.bss*);
*(.sbss*);
*(.scommon);
_ebss = .;
} > sram
_end = .;
_heap_start = ALIGN(0x1000);
_stack_pointer = _sram_start + _sram_limit;
}

2
scripts/linker.ld
View file

@ -25,7 +25,7 @@ SECTIONS {
*(.scommon)
}
_stack_top = ALIGN(0x1000);
. = _stack_top + 0x8000;
. = _stack_top + 0x10000;
_stack_pointer = .;
end = .;
_end = .;

13
scripts/native.mk
View file

@ -12,13 +12,16 @@ AM_SRCS := native/trm.c \
native/ioe/audio.c \
native/ioe/disk.c \
CFLAGS += -fpie $(shell sdl2-config --cflags)
ASFLAGS += -fpie -pie
CFLAGS += -fpie
comma = ,
LDFLAGS_CXX = $(addprefix -Wl$(comma), $(LDFLAGS)) -pie -ldl $(shell sdl2-config --libs)
LDFLAGS_CXX = $(addprefix -Wl$(comma), $(LDFLAGS))
image:
@echo + LD "->" $(IMAGE_REL)
@g++ -pie -o $(IMAGE) -Wl,--whole-archive $(LINKAGE) -Wl,-no-whole-archive $(LDFLAGS_CXX) -lSDL2 -ldl
run: image
$(IMAGE).elf
$(IMAGE)
gdb: image
gdb -ex "handle SIGUSR1 SIGUSR2 SIGSEGV noprint nostop" $(IMAGE).elf
gdb -ex "handle SIGUSR1 SIGUSR2 SIGSEGV noprint nostop" $(IMAGE)

25
scripts/platform/nemu.mk
View file

@ -8,28 +8,23 @@ AM_SRCS := platform/nemu/trm.c \
platform/nemu/mpe.c
CFLAGS += -fdata-sections -ffunction-sections
CFLAGS += -I$(AM_HOME)/am/src/platform/nemu/include
LDSCRIPTS += $(AM_HOME)/scripts/linker.ld
LDFLAGS += --defsym=_pmem_start=0x80000000 --defsym=_entry_offset=0x0
LDFLAGS += -T $(AM_HOME)/scripts/linker.ld \
--defsym=_pmem_start=0x80000000 --defsym=_entry_offset=0x0
LDFLAGS += --gc-sections -e _start
NEMUFLAGS += -l $(shell dirname $(IMAGE).elf)/nemu-log.txt
NEMUFLAGS += -b
#-l $(shell dirname $(IMAGE).elf)/nemu-log.txt
MAINARGS_MAX_LEN = 64
MAINARGS_PLACEHOLDER = The insert-arg rule in Makefile will insert mainargs here.
CFLAGS += -DMAINARGS_MAX_LEN=$(MAINARGS_MAX_LEN) -DMAINARGS_PLACEHOLDER=\""$(MAINARGS_PLACEHOLDER)"\"
CFLAGS += -DMAINARGS=\"$(mainargs)\"
CFLAGS += -I$(AM_HOME)/am/src/platform/nemu/include
.PHONY: $(AM_HOME)/am/src/platform/nemu/trm.c
insert-arg: image
@python $(AM_HOME)/tools/insert-arg.py $(IMAGE).bin $(MAINARGS_MAX_LEN) "$(MAINARGS_PLACEHOLDER)" "$(mainargs)"
image: image-dep
image: $(IMAGE).elf
@$(OBJDUMP) -d $(IMAGE).elf > $(IMAGE).txt
@echo + OBJCOPY "->" $(IMAGE_REL).bin
@$(OBJCOPY) -S --set-section-flags .bss=alloc,contents -O binary $(IMAGE).elf $(IMAGE).bin
run: insert-arg
run: image
$(MAKE) -C $(NEMU_HOME) ISA=$(ISA) run ARGS="$(NEMUFLAGS)" IMG=$(IMAGE).bin
gdb: insert-arg
gdb: image
$(MAKE) -C $(NEMU_HOME) ISA=$(ISA) gdb ARGS="$(NEMUFLAGS)" IMG=$(IMAGE).bin
.PHONY: insert-arg

25
scripts/platform/npc.mk
View file

@ -9,23 +9,22 @@ AM_SRCS := riscv/npc/start.S \
platform/dummy/mpe.c
CFLAGS += -fdata-sections -ffunction-sections
LDSCRIPTS += $(AM_HOME)/scripts/linker.ld
LDFLAGS += --defsym=_pmem_start=0x80000000 --defsym=_entry_offset=0x0
LDFLAGS += -T $(AM_HOME)/scripts/linker.ld \
--defsym=_pmem_start=0x80000000 --defsym=_entry_offset=0x0
LDFLAGS += --gc-sections -e _start
CFLAGS += -DMAINARGS=\"$(mainargs)\"
.PHONY: $(AM_HOME)/am/src/riscv/npc/trm.c
MAINARGS_MAX_LEN = 64
MAINARGS_PLACEHOLDER = The insert-arg rule in Makefile will insert mainargs here.
CFLAGS += -DMAINARGS_MAX_LEN=$(MAINARGS_MAX_LEN) -DMAINARGS_PLACEHOLDER=\""$(MAINARGS_PLACEHOLDER)"\"
insert-arg: image
@python $(AM_HOME)/tools/insert-arg.py $(IMAGE).bin $(MAINARGS_MAX_LEN) "$(MAINARGS_PLACEHOLDER)" "$(mainargs)"
image: image-dep
image: $(IMAGE).elf
@$(OBJDUMP) -d $(IMAGE).elf > $(IMAGE).txt
@echo + OBJCOPY "->" $(IMAGE_REL).bin
@$(OBJCOPY) -S --set-section-flags .bss=alloc,contents -O binary $(IMAGE).elf $(IMAGE).bin
run: insert-arg
echo "TODO: add command here to run simulation"
ref= $(NEMU_HOME)/build/riscv32-nemu-interpreter-so
.PHONY: insert-arg
run: image
make -f $(NPC_HOME)/scripts/sim.mk all
$(NPC_HOME)/build/npc $(IMAGE).bin $(ref)
gdb: image
make -f $(NPC_HOME)/scripts/sim.mk all
gdb --args $(NPC_HOME)/build/npc $(IMAGE).bin

2
scripts/platform/qemu.mk
View file

@ -11,7 +11,7 @@ build-arg: image
BOOT_HOME := $(AM_HOME)/am/src/x86/qemu/boot
image: image-dep
image: $(IMAGE).elf
@$(MAKE) -s -C $(BOOT_HOME)
@echo + CREATE "->" $(IMAGE_REL)
@( cat $(BOOT_HOME)/bootblock.o; head -c 1024 /dev/zero; cat $(IMAGE).elf ) > $(IMAGE)

31
scripts/platform/ysyxsoc.mk Normal file
View file

@ -0,0 +1,31 @@
AM_SRCS := riscv/ysyxsoc/start.S \
riscv/ysyxsoc/trm.c \
riscv/ysyxsoc/ioe.c \
riscv/ysyxsoc/timer.c \
riscv/ysyxsoc/input.c \
riscv/ysyxsoc/cte.c \
riscv/ysyxsoc/trap.S \
platform/dummy/vme.c \
platform/dummy/mpe.c
CFLAGS += -fdata-sections -ffunction-sections
LDFLAGS += -T $(AM_HOME)/scripts/linker-soc.ld \
--defsym=_mrom_start=0x20000000 --defsym=_sram_start=0x0f000000 \
--defsym=_entry_offset=0x0 --defsym=_sram_limit=0x2000 #-M
LDFLAGS += --gc-sections -e _start
CFLAGS += -DMAINARGS=\"$(mainargs)\"
.PHONY: $(AM_HOME)/am/src/riscv/ysyxsoc/trm.c
image: $(IMAGE).elf
@$(OBJDUMP) -d $(IMAGE).elf > $(IMAGE).txt
@echo + OBJCOPY "->" $(IMAGE_REL).bin
@$(OBJCOPY) -S --set-section-flags .bss=alloc,contents -O binary $(IMAGE).elf $(IMAGE).bin
ref= $(NEMU_HOME)/riscv32-nemu-interpreter-so
run: image
make -f $(NPC_HOME)/scripts/sim.mk all
$(NPC_HOME)/build/ysyxSoCFull $(IMAGE).bin $(ref)
gdb: image
make -f $(NPC_HOME)/scripts/sim.mk all
gdb --args $(NPC_HOME)/build/npc $(IMAGE).bin

4
scripts/riscv32-nemu.mk
View file

@ -1,8 +1,8 @@
include $(AM_HOME)/scripts/isa/riscv.mk
include $(AM_HOME)/scripts/platform/nemu.mk
CFLAGS += -DISA_H=\"riscv/riscv.h\"
COMMON_CFLAGS += -march=rv32im_zicsr -mabi=ilp32 # overwrite
LDFLAGS += -melf32lriscv # overwrite
COMMON_CFLAGS += -march=rv32im_zicsr -mabi=ilp32 # overwrite
LDFLAGS += -melf32lriscv # overwrite
AM_SRCS += riscv/nemu/start.S \
riscv/nemu/cte.c \

10
scripts/riscv32e-ysyxsoc.mk Normal file
View file

@ -0,0 +1,10 @@
include $(AM_HOME)/scripts/isa/riscv.mk
include $(AM_HOME)/scripts/platform/ysyxsoc.mk
COMMON_CFLAGS += -march=rv32e_zicsr -mabi=ilp32e # overwrite
LDFLAGS += -melf32lriscv # overwrite
AM_SRCS += riscv/ysyxsoc/libgcc/div.S \
riscv/ysyxsoc/libgcc/muldi3.S \
riscv/ysyxsoc/libgcc/multi3.c \
riscv/ysyxsoc/libgcc/ashldi3.c \
riscv/ysyxsoc/libgcc/unused.c

35
scripts/riscv64-nutshell.mk Normal file
View file

@ -0,0 +1,35 @@
include $(AM_HOME)/scripts/isa/riscv.mk
AM_SRCS := riscv/nutshell/isa/riscv/boot/start.S \
riscv/nutshell/common/mainargs.S \
riscv/nutshell/isa/riscv/trm.c \
riscv/nutshell/common/uartlite.c \
riscv/nutshell/common/ioe.c \
riscv/nutshell/common/timer.c \
platform/dummy/input.c \
platform/dummy/video.c \
platform/dummy/audio.c \
platform/dummy/cte.c \
platform/dummy/vme.c \
platform/dummy/mpe.c \
COMMON_CFLAGS += -march=rv64im_zicsr -mabi=lp64 # overwrite
LDFLAGS += -melf64lriscv # overwrite
CFLAGS += -I$(AM_HOME)/am/src/riscv/nutshell/include -DISA_H=\"riscv.h\"
ASFLAGS += -DMAINARGS=\"$(mainargs)\" # for mainargs.S, modify in the future
CFLAGS += -DMAINARGS=\"$(mainargs)\" # for trm.c
.PHONY: $(AM_HOME)/am/src/riscv/nutshell/common/mainargs.S
LDFLAGS += -L $(AM_HOME)/am/src/riscv/nutshell/ldscript
LDFLAGS += -T $(AM_HOME)/am/src/riscv/nutshell/isa/riscv/boot/loader64.ld
image: $(IMAGE).elf
@$(OBJDUMP) -d $(IMAGE).elf > $(IMAGE).txt
@echo + OBJCOPY "->" $(IMAGE_REL).bin
@$(OBJCOPY) -S --set-section-flags .bss=alloc,contents -O binary $(IMAGE).elf $(IMAGE).bin
run: image
$(NUTSHELL_HOME)/build/emu --no-diff -i $(abspath $(IMAGE).bin)

4
scripts/spike.mk
View file

@ -10,10 +10,10 @@ AM_SRCS := riscv/spike/trm.c \
platform/dummy/mpe.c \
CFLAGS += -fdata-sections -ffunction-sections
LDSCRIPTS += $(AM_HOME)/am/src/riscv/spike/linker.ld
LDFLAGS += -T $(AM_HOME)/am/src/riscv/spike/linker.ld
LDFLAGS += --gc-sections -e _start
CFLAGS += -DMAINARGS=\"$(mainargs)\"
.PHONY: $(AM_HOME)/am/src/riscv/spike/trm.c
image: image-dep
image: $(IMAGE).elf