diff options
Diffstat (limited to 'sysdeps/unix/i386')
-rw-r--r-- | sysdeps/unix/i386/syscall.S | 4 | ||||
-rw-r--r-- | sysdeps/unix/i386/sysdep.S | 14 | ||||
-rw-r--r-- | sysdeps/unix/i386/sysdep.h | 19 |
3 files changed, 31 insertions, 6 deletions
diff --git a/sysdeps/unix/i386/syscall.S b/sysdeps/unix/i386/syscall.S index 5241ee4ac1..1db1e77d8d 100644 --- a/sysdeps/unix/i386/syscall.S +++ b/sysdeps/unix/i386/syscall.S @@ -1,4 +1,4 @@ -/* Copyright (C) 1993 Free Software Foundation, Inc. +/* Copyright (C) 1993, 1995 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 @@ -24,5 +24,5 @@ ENTRY (syscall) popl %eax /* Pop syscall number into %eax. */ pushl %ecx /* Push back return address. */ .byte 0x9a, 0, 0, 0, 0, 7, 0 /* lcall $7, $0 -- gas bug */ - jb syscall_error + jb JUMPTARGET(syscall_error) ret diff --git a/sysdeps/unix/i386/sysdep.S b/sysdeps/unix/i386/sysdep.S index dae7153796..efe4f56e95 100644 --- a/sysdeps/unix/i386/sysdep.S +++ b/sysdeps/unix/i386/sysdep.S @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc. +/* Copyright (C) 1991, 1992, 1993, 1994, 1995 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 @@ -37,6 +37,16 @@ syscall_error: jne notb /* Branch if not. */ movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */ #endif -notb: movl %eax, C_SYMBOL_NAME(errno) +notb: +#ifndef PIC + movl %eax, C_SYMBOL_NAME(errno) +#else + /* Standard PIC nonsense to store into `errno' through the GOT. */ + call here +here: popl %ecx + addl $_GLOBAL_OFFSET_TABLE_+[.-here], %ecx + movl C_SYMBOL_NAME(errno@GOT)(%ecx), %ecx + movl %eax, (%ecx) +#endif movl $-1, %eax ret diff --git a/sysdeps/unix/i386/sysdep.h b/sysdeps/unix/i386/sysdep.h index 38dd2378b5..4e4b6e6ab5 100644 --- a/sysdeps/unix/i386/sysdep.h +++ b/sysdeps/unix/i386/sysdep.h @@ -20,11 +20,20 @@ Cambridge, MA 02139, USA. */ #ifdef ASSEMBLER +/* Define an entry point visible from C. */ #define ENTRY(name) \ - .globl C_SYMBOL_NAME(name); \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \ + ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \ .align 4; \ C_LABEL(name) +/* For ELF we need the `.type' directive to make shared libs work right. */ +#ifdef HAVE_ELF +#define ASM_TYPE_DIRECTIVE(name,type) .type name,type; +#else +#define ASM_TYPE_DIRECTIVE(name,type) /* Nothing is specified. */ +#endif + #ifdef NO_UNDERSCORES /* Since C identifiers are not normally prefixed with an underscore on this system, the asm identifier `syscall_error' intrudes on the @@ -36,7 +45,13 @@ Cambridge, MA 02139, USA. */ .globl syscall_error; \ ENTRY (name) \ DO_CALL (syscall_name, args); \ - jb syscall_error + jb JUMPTARGET(syscall_error) + +#ifdef PIC +#define JUMPTARGET(name) name@PLT +#else +#define JUMPTARGET(name) name +#endif /* This is defined as a separate macro so that other sysdep.h files can include this one and then redefine DO_CALL. */ |