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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-02-03 11:52:43 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-02-14 21:09:12 -0300 |
| commit | cf1e05f5990aba073864cd0bc681cd017e663351 (patch) | |
| tree | 01f40ffae3c92767f861c19d7ce623d3b5649841 /sysdeps/unix/sysv/linux/mips/mips64 | |
| parent | ebb4aed873de6ee6ce3c0d2f55660808a04c9e68 (diff) | |
| download | glibc-cf1e05f5990aba073864cd0bc681cd017e663351.tar.gz glibc-cf1e05f5990aba073864cd0bc681cd017e663351.tar.xz glibc-cf1e05f5990aba073864cd0bc681cd017e663351.zip | |
mips: Use Linux kABI for syscall return
It changes the mips INTERNAL_SYSCALL* and internal_syscall* macros to return a negative value instead of the 'a3' register value on then 'err' macro argument. The macro INTERNAL_SYSCALL_DECL is no longer required, and the INTERNAL_SYSCALL_ERROR_P macro follows the other Linux kABIs. The redefinition of INTERNAL_VSYSCALL_CALL is also no longer required. Checked on mips64-linux-gnu, mips64n32-linux-gnu, and mips-linux-gnu.
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips/mips64')
| -rw-r--r-- | sysdeps/unix/sysv/linux/mips/mips64/sysdep.h | 28 |
1 files changed, 11 insertions, 17 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/sysdep.h b/sysdeps/unix/sysv/linux/mips/mips64/sysdep.h index 0c1fda50ce..2c8ddcfc1b 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/sysdep.h +++ b/sysdeps/unix/sysv/linux/mips/mips64/sysdep.h @@ -69,13 +69,14 @@ typedef long int __syscall_arg_t; result_var; }) #undef INTERNAL_SYSCALL_DECL -#define INTERNAL_SYSCALL_DECL(err) long int err __attribute__ ((unused)) +#define INTERNAL_SYSCALL_DECL(err) do { } while (0) #undef INTERNAL_SYSCALL_ERROR_P -#define INTERNAL_SYSCALL_ERROR_P(val, err) ((void) (val), (long int) (err)) +#define INTERNAL_SYSCALL_ERROR_P(val, err) \ + ((unsigned long int) (val) > -4096UL) #undef INTERNAL_SYSCALL_ERRNO -#define INTERNAL_SYSCALL_ERRNO(val, err) ((void) (err), val) +#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val)) /* Note that the original Linux syscall restart convention required the instruction immediately preceding SYSCALL to initialize $v0 with the @@ -133,8 +134,7 @@ typedef long int __syscall_arg_t; : "=r" (__v0), "=r" (__a3) \ : input \ : __SYSCALL_CLOBBERS); \ - err = __a3; \ - _sys_result = __v0; \ + _sys_result = __a3 != 0 ? -__v0 : __v0; \ } \ _sys_result; \ }) @@ -158,8 +158,7 @@ typedef long int __syscall_arg_t; : "=r" (__v0), "=r" (__a3) \ : input, "r" (__a0) \ : __SYSCALL_CLOBBERS); \ - err = __a3; \ - _sys_result = __v0; \ + _sys_result = __a3 != 0 ? -__v0 : __v0; \ } \ _sys_result; \ }) @@ -185,8 +184,7 @@ typedef long int __syscall_arg_t; : "=r" (__v0), "=r" (__a3) \ : input, "r" (__a0), "r" (__a1) \ : __SYSCALL_CLOBBERS); \ - err = __a3; \ - _sys_result = __v0; \ + _sys_result = __a3 != 0 ? -__v0 : __v0; \ } \ _sys_result; \ }) @@ -215,8 +213,7 @@ typedef long int __syscall_arg_t; : "=r" (__v0), "=r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2) \ : __SYSCALL_CLOBBERS); \ - err = __a3; \ - _sys_result = __v0; \ + _sys_result = __a3 != 0 ? -__v0 : __v0; \ } \ _sys_result; \ }) @@ -246,8 +243,7 @@ typedef long int __syscall_arg_t; : "=r" (__v0), "+r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2) \ : __SYSCALL_CLOBBERS); \ - err = __a3; \ - _sys_result = __v0; \ + _sys_result = __a3 != 0 ? -__v0 : __v0; \ } \ _sys_result; \ }) @@ -279,8 +275,7 @@ typedef long int __syscall_arg_t; : "=r" (__v0), "+r" (__a3) \ : input, "r" (__a0), "r" (__a1), "r" (__a2), "r" (__a4) \ : __SYSCALL_CLOBBERS); \ - err = __a3; \ - _sys_result = __v0; \ + _sys_result = __a3 != 0 ? -__v0 : __v0; \ } \ _sys_result; \ }) @@ -315,8 +310,7 @@ typedef long int __syscall_arg_t; : input, "r" (__a0), "r" (__a1), "r" (__a2), "r" (__a4), \ "r" (__a5) \ : __SYSCALL_CLOBBERS); \ - err = __a3; \ - _sys_result = __v0; \ + _sys_result = __a3 != 0 ? -__v0 : __v0; \ } \ _sys_result; \ }) |