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update from main archive 960911

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This commit is contained in:
Ulrich Drepper 1996-09-12 02:50:36 +00:00
parent 862eb33e44
commit bf4b310762
3 changed files with 41 additions and 19 deletions
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1
sysdeps/unix/sysv/linux/m68k/Dist
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@ -1,2 +1 @@
init-first.h
clone.S

39
sysdeps/unix/sysv/linux/m68k/sysdep.S
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@ -33,8 +33,9 @@ errno: .space 4
_errno = errno /* This name is expected by hj libc.so.5 startup code. */
.text
/* The following code is not used at all in the shared library.
The PIC system call stubs set errno themselves. */
/* The following code is only used in the shared library when we
compile the reentrant version. Otherwise each system call defines
each own version. */
#ifndef PIC
@ -42,30 +43,34 @@ _errno = errno /* This name is expected by hj libc.so.5 startup code. */
#define _ERRNO_H
#include <errnos.h>
.globl errno
.globl __syscall_error
/* The syscall stubs jump here when they detect an error. */
.globl __syscall_error
__syscall_error:
neg.l %d0
#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
/* We translate the system's EWOULDBLOCK error into EAGAIN.
The GNU C library always defines EWOULDBLOCK==EAGAIN.
EWOULDBLOCK_sys is the original number. */
move.l #EWOULDBLOCK_sys, %d1
cmp.l %d0, %d1
jne 1f
move.l #EAGAIN, %d0
1:
#endif
move.l %d0, errno
#ifdef _LIBC_REENTRANT
move.l %d0, -(%sp)
jbsr __errno_location
move.l (%sp)+, (%a0)
#endif
move.l #-1, %d0
/* Copy return value to %a0 for syscalls that are declared to
return a pointer. */
move.l %d0, %a0
rts
.size __syscall_error, . - __syscall_error
#endif /* PIC */
#ifdef _LIBC_REENTRANT
.globl __errno_location
.type __errno_location, @function
__errno_location:
#ifdef PIC
move.l (%pc, errno@GOTPC), %a0
#else
lea errno, %a0
#endif
rts
.size __errno_location, . - __errno_location
#endif

20
sysdeps/unix/sysv/linux/m68k/sysdep.h
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@ -78,7 +78,24 @@ Cambridge, MA 02139, USA. */
#ifdef PIC
/* Store (- %d0) into errno through the GOT. */
#ifdef _LIBC_REENTRANT
#define SYSCALL_ERROR_HANDLER \
.type syscall_error, @function; \
syscall_error: \
move.l (errno@GOTPC, %pc), %a0; \
neg.l %d0; \
move.l %d0, (%a0); \
move.l %d0, -(%sp); \
jbsr __errno_location@PLTPC \
move.l (%sp)+, (%a0); \
move.l POUND -1, %d0; \
/* Copy return value to %a0 for syscalls that are declared to return \
a pointer (e.g., mmap). */ \
move.l %d0, %a0; \
rts;
#else
#define SYSCALL_ERROR_HANDLER \
.type syscall_error, @function; \
syscall_error: \
move.l (errno@GOTPC, %pc), %a0; \
neg.l %d0; \
@ -88,9 +105,10 @@ syscall_error: \
a pointer (e.g., mmap). */ \
move.l %d0, %a0; \
rts;
#endif /* _LIBC_REENTRANT */
#else
#define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
#endif
#endif /* PIC */
/* Linux takes system call arguments in registers: