OpenE2K/qemu-e2k
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target: e2k: Rotate window registers in syscall.

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This commit is contained in:
Denis Drakhnia 2020-11-15 19:57:10 +02:00
parent a23305afc0
commit 89b9789906
1 changed files with 13 additions and 6 deletions
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19
linux-user/e2k/cpu_loop.c
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@ -38,13 +38,20 @@ void cpu_loop(CPUE2KState *env)
switch (trapnr) {
case E2K_EXCP_SYSCALL: {
/* TODO: wrap register indices */
int wbs = e2k_state_wbs_get(env);
int offset = (wbs + env->call_wbs) * 2;
uint64_t *regs = &env->wregs[offset];
abi_ulong ret = do_syscall(env, regs[0],
regs[1], regs[2], regs[3], regs[4],
regs[5], regs[6], regs[7], regs[8]);
uint64_t *regs = env->wregs;
abi_ulong ret = do_syscall(env,
regs[(0 + offset) % WREGS_SIZE],
regs[(1 + offset) % WREGS_SIZE],
regs[(2 + offset) % WREGS_SIZE],
regs[(3 + offset) % WREGS_SIZE],
regs[(4 + offset) % WREGS_SIZE],
regs[(5 + offset) % WREGS_SIZE],
regs[(6 + offset) % WREGS_SIZE],
regs[(7 + offset) % WREGS_SIZE],
regs[(8 + offset) % WREGS_SIZE]
);
if (ret == -TARGET_ERESTARTSYS) {
/* TODO: restart syscall */
} else if (ret != -TARGET_QEMU_ESIGRETURN) {
@ -52,7 +59,7 @@ void cpu_loop(CPUE2KState *env)
regs[0] = ret;
for (i = 1; i < 8; i++) {
regs[i] = 0;
regs[(i + offset) % WREGS_SIZE] = 0;
}
}
break;