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abstract-machine(nemu): support context switch

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xinyangli 2024-07-25 16:47:29 +08:00
parent ef51673020
commit 385d448746
Signed by: xin
SSH key fingerprint: SHA256:qZ/tzd8lYRtUFSrfBDBMcUqV4GHKxqeqRA3huItgvbk
22 changed files with 236 additions and 87 deletions
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6
abstract-machine/am/include/arch/riscv.h
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@ -1,5 +1,6 @@
#ifndef ARCH_H__
#define ARCH_H__
#include <stdint.h>
#ifdef __riscv_e
#define NR_REGS 16
@ -9,10 +10,13 @@
struct Context {
// TODO: fix the order of these members to match trap.S
uintptr_t mepc, mcause, gpr[NR_REGS], mstatus;
uintptr_t gpr[NR_REGS];
uintptr_t mcause, mstatus, mepc;
void *pdir;
};
enum Cause { CauseEnvironmentCallFromMMode = 11 };
#ifdef __riscv_e
#define GPR1 gpr[15] // a5
#else