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fixed execve bug

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@67 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-03-30 21:00:25 +00:00
parent fd429f2f6c
commit f7341ff400
1 changed files with 8 additions and 4 deletions
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12
linux-user/syscall.c
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@ -1077,7 +1077,6 @@ int do_vm86(CPUX86State *env, long subfunction,
}
ts->target_v86 = target_v86;
/* save current CPU regs */
ts->vm86_saved_regs.eax = 0; /* default vm86 syscall return code */
ts->vm86_saved_regs.ebx = env->regs[R_EBX];
@ -1239,22 +1238,27 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
case TARGET_NR_execve:
{
char **argp, **envp;
int argc = 0, envc = 0;
int argc, envc;
uint32_t *p;
char **q;
argc = 0;
for (p = (void *)arg2; *p; p++)
argc++;
envc = 0;
for (p = (void *)arg3; *p; p++)
envc++;
argp = alloca(argc * sizeof(void *));
envp = alloca(envc * sizeof(void *));
argp = alloca((argc + 1) * sizeof(void *));
envp = alloca((envc + 1) * sizeof(void *));
for (p = (void *)arg2, q = argp; *p; p++, q++)
*q = (void *)tswap32(*p);
*q = NULL;
for (p = (void *)arg3, q = envp; *p; p++, q++)
*q = (void *)tswap32(*p);
*q = NULL;
ret = get_errno(execve((const char *)arg1, argp, envp));
}