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linux-user, x86_64, i386: cleanup TARGET_NR_arch_prctl

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Define do_arch_prctl() for i386 and x86_64, but return -TARGET_ENOSYS
for i386.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <20200310103403.3284090-14-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Laurent Vivier 2020-03-10 11:33:55 +01:00
parent bb0cdc0367
commit 9d12f79daa
2 changed files with 13 additions and 10 deletions
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4
linux-user/i386/target_cpu.h
View File

@ -33,6 +33,8 @@ static inline void cpu_clone_regs_parent(CPUX86State *env, unsigned flags)
{
}
abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr);
#if defined(TARGET_ABI32)
abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr);
@ -42,8 +44,6 @@ static inline void cpu_set_tls(CPUX86State *env, target_ulong newtls)
cpu_x86_load_seg(env, R_GS, env->segs[R_GS].selector);
}
#else
abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr);
static inline void cpu_set_tls(CPUX86State *env, target_ulong newtls)
{
do_arch_prctl(env, TARGET_ARCH_SET_FS, newtls);

19
linux-user/syscall.c
View File

@ -5545,6 +5545,10 @@ static bitmask_transtbl mmap_flags_tbl[] = {
{ 0, 0, 0, 0 }
};
/*
* NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64)
* TARGET_I386 is defined if TARGET_X86_64 is defined
*/
#if defined(TARGET_I386)
/* NOTE: there is really one LDT for all the threads */
@ -5684,7 +5688,7 @@ static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr,
return ret;
}
#if defined(TARGET_I386) && defined(TARGET_ABI32)
#if defined(TARGET_ABI32)
abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr)
{
uint64_t *gdt_table = g2h(env->gdt.base);
@ -5816,9 +5820,12 @@ static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
unlock_user_struct(target_ldt_info, ptr, 1);
return 0;
}
#endif /* TARGET_I386 && TARGET_ABI32 */
#ifndef TARGET_ABI32
abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
{
return -ENOSYS;
}
#else
abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
{
abi_long ret = 0;
@ -5851,7 +5858,7 @@ abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
}
return ret;
}
#endif
#endif /* defined(TARGET_ABI32 */
#endif /* defined(TARGET_I386) */
@ -10321,11 +10328,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
break;
#ifdef TARGET_NR_arch_prctl
case TARGET_NR_arch_prctl:
#if defined(TARGET_I386) && !defined(TARGET_ABI32)
return do_arch_prctl(cpu_env, arg1, arg2);
#else
#error unreachable
#endif
#endif
#ifdef TARGET_NR_pread64
case TARGET_NR_pread64: