diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sysdep.h | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h index b00c976351..5d378fd179 100644 --- a/sysdeps/unix/sysv/linux/i386/sysdep.h +++ b/sysdeps/unix/sysv/linux/i386/sysdep.h @@ -28,11 +28,7 @@ Cambridge, MA 02139, USA. */ of the kernel. But these symbols do not follow the SYS_* syntax so we have to redefine the `SYS_ify' macro here. */ #undef SYS_ify -#ifdef __STDC__ -# define SYS_ify(syscall_name) __NR_##syscall_name -#else -# define SYS_ify(syscall_name) __NR_/**/syscall_name -#endif +#define SYS_ify(syscall_name) __NR_##syscall_name #ifdef ASSEMBLER @@ -51,19 +47,22 @@ Cambridge, MA 02139, USA. */ #undef PSEUDO #define PSEUDO(name, syscall_name, args) \ .text; \ - SYSCALL_ERROR_HANDLER \ ENTRY (name) \ DO_CALL (args, syscall_name); \ cmpl $-125, %eax; \ jae syscall_error; +#undef PSEUDO_END +#define PSEUDO_END(name) \ + SYSCALL_ERROR_HANDLER \ + END (name) + #ifndef PIC #define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */ #else /* Store (- %eax) into errno through the GOT. */ #ifdef _LIBC_REENTRANT #define SYSCALL_ERROR_HANDLER \ - .type syscall_error,@function; \ syscall_error: \ pushl %ebx; \ call 0f; \ @@ -79,13 +78,11 @@ syscall_error: \ popl %ebx; \ movl %ecx, (%eax); \ movl $-1, %eax; \ - ret; \ - .size syscall_error,.-syscall-error; + ret; /* A quick note: it is assumed that the call to `__errno_location' does not modify the stack! */ #else #define SYSCALL_ERROR_HANDLER \ - .type syscall_error,@function; \ syscall_error: \ call 0f; \ 0:popl %ecx; \ @@ -95,8 +92,7 @@ syscall_error: \ movl errno@GOT(%ecx), %ecx; \ movl %edx, (%ecx); \ movl $-1, %eax; \ - ret; \ - .size syscall_error,.-syscall-error; + ret; #endif /* _LIBC_REENTRANT */ #endif /* PIC */ @@ -121,7 +117,7 @@ syscall_error: \ (Of course a function with say 3 arguments does not have entries for arguments 4 and 5.) - The following code tries hard to be optimal. A general assuption + The following code tries hard to be optimal. A general assumption (which is true according to the data books I have) is that 2 * xchg is more expensive than pushl + movl + popl @@ -136,7 +132,7 @@ syscall_error: \ (2 * movl is less expensive than pushl + popl). Second unlike for the other registers we don't save the content of - %ecx and %edx when we have than 1 and 2 registers resp. + %ecx and %edx when we have more than 1 and 2 registers resp. The code below might look a bit long but we have to take care for the pipelined processors (i586 and up). Here the `pushl' and `popl' |