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linux-user: Bump do_syscall() up to 8 syscall arguments

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On 32 bit MIPS a few syscalls have 7 arguments, and so to call
them via NR_syscall the guest needs to be able to pass 8 arguments
to do_syscall(). Raise the number of arguments do_syscall() takes
accordingly.

This fixes some gcc 4.6 compiler warnings about arg7 and arg8
variables being set and never used.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
This commit is contained in:
Peter Maydell 2011-06-16 17:37:13 +01:00 committed by Riku Voipio
parent 3002fa8472
commit 5945cfcb4b
3 changed files with 31 additions and 17 deletions
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37
linux-user/main.c
View File

@ -319,7 +319,8 @@ void cpu_loop(CPUX86State *env)
env->regs[R_EDX],
env->regs[R_ESI],
env->regs[R_EDI],
env->regs[R_EBP]);
env->regs[R_EBP],
0, 0);
break;
#ifndef TARGET_ABI32
case EXCP_SYSCALL:
@ -331,7 +332,8 @@ void cpu_loop(CPUX86State *env)
env->regs[R_EDX],
env->regs[10],
env->regs[8],
env->regs[9]);
env->regs[9],
0, 0);
env->eip = env->exception_next_eip;
break;
#endif
@ -735,7 +737,8 @@ void cpu_loop(CPUARMState *env)
env->regs[2],
env->regs[3],
env->regs[4],
env->regs[5]);
env->regs[5],
0, 0);
}
} else {
goto error;
@ -831,7 +834,8 @@ void cpu_loop(CPUState *env)
env->regs[2],
env->regs[3],
env->regs[4],
env->regs[5]);
env->regs[5],
0, 0);
}
} else {
goto error;
@ -1018,7 +1022,8 @@ void cpu_loop (CPUSPARCState *env)
ret = do_syscall (env, env->gregs[1],
env->regwptr[0], env->regwptr[1],
env->regwptr[2], env->regwptr[3],
env->regwptr[4], env->regwptr[5]);
env->regwptr[4], env->regwptr[5],
0, 0);
if ((abi_ulong)ret >= (abi_ulong)(-515)) {
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
env->xcc |= PSR_CARRY;
@ -1611,7 +1616,7 @@ void cpu_loop(CPUPPCState *env)
env->crf[0] &= ~0x1;
ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
env->gpr[5], env->gpr[6], env->gpr[7],
env->gpr[8]);
env->gpr[8], 0, 0);
if (ret == (uint32_t)(-TARGET_QEMU_ESIGRETURN)) {
/* Returning from a successful sigreturn syscall.
Avoid corrupting register state. */
@ -2072,7 +2077,7 @@ void cpu_loop(CPUMIPSState *env)
env->active_tc.gpr[5],
env->active_tc.gpr[6],
env->active_tc.gpr[7],
arg5, arg6/*, arg7, arg8*/);
arg5, arg6, arg7, arg8);
}
if (ret == -TARGET_QEMU_ESIGRETURN) {
/* Returning from a successful sigreturn syscall.
@ -2160,7 +2165,8 @@ void cpu_loop (CPUState *env)
env->gregs[6],
env->gregs[7],
env->gregs[0],
env->gregs[1]);
env->gregs[1],
0, 0);
env->gregs[0] = ret;
break;
case EXCP_INTERRUPT:
@ -2229,7 +2235,8 @@ void cpu_loop (CPUState *env)
env->regs[12],
env->regs[13],
env->pregs[7],
env->pregs[11]);
env->pregs[11],
0, 0);
env->regs[10] = ret;
break;
case EXCP_DEBUG:
@ -2288,7 +2295,8 @@ void cpu_loop (CPUState *env)
env->regs[7],
env->regs[8],
env->regs[9],
env->regs[10]);
env->regs[10],
0, 0);
env->regs[3] = ret;
env->sregs[SR_PC] = env->regs[14];
break;
@ -2398,7 +2406,8 @@ void cpu_loop(CPUM68KState *env)
env->dregs[3],
env->dregs[4],
env->dregs[5],
env->aregs[0]);
env->aregs[0],
0, 0);
}
break;
case EXCP_INTERRUPT:
@ -2576,7 +2585,8 @@ void cpu_loop (CPUState *env)
sysret = do_syscall(env, trapnr,
env->ir[IR_A0], env->ir[IR_A1],
env->ir[IR_A2], env->ir[IR_A3],
env->ir[IR_A4], env->ir[IR_A5]);
env->ir[IR_A4], env->ir[IR_A5],
0, 0);
if (trapnr == TARGET_NR_sigreturn
|| trapnr == TARGET_NR_rt_sigreturn) {
break;
@ -2707,7 +2717,8 @@ void cpu_loop(CPUS390XState *env)
env->regs[4],
env->regs[5],
env->regs[6],
env->regs[7]);
env->regs[7],
0, 0);
}
break;
case EXCP_ADDR:

3
linux-user/qemu.h
View File

@ -192,7 +192,8 @@ abi_long do_brk(abi_ulong new_brk);
void syscall_init(void);
abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
abi_long arg2, abi_long arg3, abi_long arg4,
abi_long arg5, abi_long arg6);
abi_long arg5, abi_long arg6, abi_long arg7,
abi_long arg8);
void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
extern THREAD CPUState *thread_env;
void cpu_loop(CPUState *env);

8
linux-user/syscall.c
View File

@ -4532,7 +4532,8 @@ int get_osversion(void)
All errnos that do_syscall() returns must be -TARGET_<errcode>. */
abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
abi_long arg2, abi_long arg3, abi_long arg4,
abi_long arg5, abi_long arg6)
abi_long arg5, abi_long arg6, abi_long arg7,
abi_long arg8)
{
abi_long ret;
struct stat st;
@ -6172,8 +6173,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
#endif
#ifdef TARGET_NR_syscall
case TARGET_NR_syscall:
ret = do_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,0);
break;
ret = do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5,
arg6, arg7, arg8, 0);
break;
#endif
case TARGET_NR_wait4:
{