#else
jmp C_SYMBOL_NAME (__sigsetjmp)
#endif
+PSEUDO_END (_setjmp)
#else
jmp C_SYMBOL_NAME (__sigsetjmp)
#endif
+PSEUDO_END (setjmp)
.text
ENTRY (__clone)
+ CALL_MCOUNT
+
/* Sanity check arguments. */
movel #-EINVAL, %d0
movel 4(%sp), %a0 /* no NULL function pointers */
#else
jbsr _exit
#endif
+PSEUDO_END (__clone)
weak_alias (__clone, clone)
SYSCALL_ERROR_HANDLER
ENTRY (__mmap)
+ CALL_MCOUNT
move.l #SYS_ify (mmap), %d0 /* System call number in %d0. */
mmap is declared to return a pointer. */
move.l %d0, %a0
rts
+PSEUDO_END (__mmap)
weak_alias (__mmap, mmap)
+++ /dev/null
-/* Structure describing state saved while handling a signal. Linux/m68k version.
-Copyright (C) 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
-
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
-
-/* State of this thread when the signal was taken. */
-struct sigcontext
-{
- __sigset_t sc_mask;
- unsigned long sc_usp;
- unsigned long sc_d0;
- unsigned long sc_d1;
- unsigned long sc_a0;
- unsigned long sc_a1;
- unsigned short sc_sr;
- unsigned long sc_pc;
-};
.text
ENTRY (__sigreturn)
+ CALL_MCOUNT
+
addq.l #4, %sp /* Pop the return PC. */
DO_CALL (#SYS_ify (sigreturn), 0)
/* Do the system call; it never returns. */
/* NOTREACHED */
+PSEUDO_END (__sigreturn)
weak_alias (__sigreturn, sigreturn)
.globl P(__,socket)
ENTRY (P(__,socket))
+ CALL_MCOUNT
/* Save registers. */
move.l %d2, %a0
/* Successful; return the syscall's value. */
rts
+PSEUDO_END (P(__,socket))
weak_alias (P(__,socket), socket)
#include <sysdep.h>
+/* Please consult the file sysdeps/unix/sysv/linux/m68k/sysdep.h for
+ more information about the value -128 used below.*/
+
.text
SYSCALL_ERROR_HANDLER
ENTRY (syscall)
- move.l (%sp)+, %a0 /* Pop return address. */
- DO_CALL ((%sp), 5) /* Frob the args and do the system call. */
- tst.l %d0 /* Check %d0 for error. */
- jmi error /* Jump to error handler if negative. */
- jmp (%a0) /* Return to caller. */
+ CALL_MCOUNT
-error: pea (%a0)
- jra syscall_error
+ move.l 4(%sp), %d0 /* Load syscall number. */
+ _DOARGS_5 (24) /* Frob arguments. */
+ trap &0 /* Do the system call. */
+ UNDOARGS_5 /* Unfrob arguments. */
+ moveq.l &-128, %d1
+ cmp.l %d1, %d0 /* Check %d0 for error. */
+ jcc syscall_error /* Jump to error handler if negative. */
+ rts /* Return to caller. */
+PSEUDO_END (syscall)
/* The syscall stubs jump here when they detect an error. */
-ENTRY(__syscall_error)
+ENTRY (__syscall_error)
neg.l %d0
move.l %d0, errno
#ifdef _LIBC_REENTRANT
return a pointer. */
move.l %d0, %a0
rts
- .size __syscall_error, . - __syscall_error
+PSEUDO_END (__syscall_error)
#endif /* PIC */
-ERRNO(__errno_location)
+ENTRY (__errno_location)
+ CALL_MCOUNT
#ifdef PIC
move.l (%pc, errno@GOTPC), %a0
#else
lea errno, %a0
#endif
rts
- .size __errno_location, . - __errno_location
+PSEUDO_END (__errno_location)
#ifdef ASSEMBLER
-#define POUND #
-
/* Define an entry point visible from C. */
#define ENTRY(name) \
.globl name; \
#define syscall_error __syscall_error
/* Linux uses a negative return value to indicate syscall errors, unlike
- most Unices, which use the condition codes' carry flag. */
+ most Unices, which use the condition codes' carry flag.
+
+ Since version 2.1 the return value of a system call might be negative
+ even if the call succeeded. E.g., the `lseek' system call might return
+ a large offset. Therefore we must not anymore test for < 0, but test
+ for a real error by making sure the value in %d0 is a real error
+ number. For now (as of 2.1.1) 122 is the largest defined error number.
+ We allow for a bit of room for development and treat -128 to -1 as
+ error values. */
#define PSEUDO(name, syscall_name, args) \
.text; \
SYSCALL_ERROR_HANDLER \
ENTRY (name) \
- DO_CALL (POUND SYS_ify (syscall_name), args); \
- tst.l %d0; \
- jmi syscall_error;
+ DO_CALL (&SYS_ify (syscall_name), args); \
+ moveq.l &-128, %d1; \
+ cmp.l %d1, %d0; \
+ jcc syscall_error
+
+#undef PSEUDO_END
+#define PSEUDO_END(name) .size name, . - name
#ifdef PIC
/* Store (- %d0) into errno through the GOT. */
move.l %d0, -(%sp); \
jbsr __errno_location@PLTPC; \
move.l (%sp)+, (%a0); \
- move.l POUND -1, %d0; \
+ move.l &-1, %d0; \
/* Copy return value to %a0 for syscalls that are declared to return \
a pointer (e.g., mmap). */ \
move.l %d0, %a0; \
move.l (errno@GOTPC, %pc), %a0; \
neg.l %d0; \
move.l %d0, (%a0); \
- move.l POUND -1, %d0; \
+ move.l &-1, %d0; \
/* Copy return value to %a0 for syscalls that are declared to return \
a pointer (e.g., mmap). */ \
move.l %d0, %a0; \
#define DO_CALL(syscall, args) \
move.l syscall, %d0; \
DOARGS_##args \
- trap POUND 0; \
+ trap &0; \
UNDOARGS_##args
#define DOARGS_0 /* No arguments to frob. */
projects / external / glibc.git / commitdiff