mirror of
https://github.com/FEX-Emu/FEX.git
synced 2026-10-12 01:00:38 +02:00
Ryan Houdek
1596843015
The `mov ebp, ecx` was breaking vsyscall and was expected to be used with the `syscall` instruction rather than `int 0x80`. Remove that to fix it. Also remove the pushes and pops around the syscall instruction, these are unnecessary in an emulated environment, we won't clobber the registers. Fixes Steam execution with VDSO.
43 lines
1.0 KiB
C++
43 lines
1.0 KiB
C++
|
|
/*
|
|
$info$
|
|
tags: thunklibs|VDSO
|
|
desc: Linux VDSO thunking
|
|
$end_info$
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <cstring>
|
|
|
|
#include <sched.h>
|
|
#include <sys/time.h>
|
|
#include <time.h>
|
|
|
|
#include "Types.h"
|
|
#include "common/Guest.h"
|
|
|
|
#include "thunkgen_guest_libVDSO.inl"
|
|
|
|
extern "C" {
|
|
time_t __vdso_time(time_t *tloc) __attribute__((alias("fexfn_pack_time")));
|
|
int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz) __attribute__((alias("fexfn_pack_gettimeofday")));
|
|
int __vdso_clock_gettime(clockid_t, struct timespec *) __attribute__((alias("fexfn_pack_clock_gettime")));
|
|
int __vdso_clock_getres(clockid_t, struct timespec *) __attribute__((alias("fexfn_pack_clock_getres")));
|
|
int __vdso_getcpu(uint32_t *, uint32_t *) __attribute__((alias("fexfn_pack_getcpu")));
|
|
|
|
#if __SIZEOF_POINTER__ == 4
|
|
int __vdso_clock_gettime64(clockid_t, struct timespec64 *) __attribute__((alias("fexfn_pack_clock_gettime64")));
|
|
|
|
__attribute__((naked))
|
|
int __kernel_vsyscall() {
|
|
asm volatile(R"(
|
|
.intel_syntax noprefix
|
|
int 0x80;
|
|
ret;
|
|
.att_syntax prefix
|
|
)"
|
|
::: "memory");
|
|
}
|
|
#endif
|
|
}
|