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Macro's for generating PIC code in assembler stubs.

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This commit is contained in:
pk 1993-09-28 21:04:01 +00:00
parent cd216b5938
commit 308358ebde
1 changed files with 21 additions and 1 deletions
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22
lib/libc/i386/SYS.h
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@ -34,12 +34,32 @@
* SUCH DAMAGE.
*
* from: @(#)SYS.h 5.5 (Berkeley) 5/7/91
* $Id: SYS.h,v 1.5 1993/08/01 18:40:06 mycroft Exp $
* $Id: SYS.h,v 1.6 1993/09/28 21:04:01 pk Exp $
*/
#include <machine/asm.h>
#include <sys/syscall.h>
#ifdef PIC
#define PIC_PROLOGUE \
pushl %ebx; \
call 1f; \
1: \
popl %ebx; \
addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
#define PIC_EPILOGUE \
popl %ebx
#define PIC_PLT(x) x@PLT
#define PIC_GOT(x) x@GOT(%ebx)
#define PIC_GOTOFF(x) x@GOTOFF(%ebx)
#else
#define PIC_PROLOGUE
#define PIC_EPILOGUE
#define PIC_PLT(x) x
#define PIC_GOT(x) x
#define PIC_GOTOFF(x) x
#endif
#define SYSCALL(x) 2: jmp cerror; ENTRY(x); lea SYS_/**/x,%eax; LCALL(7,0); jb 2b
#define RSYSCALL(x) SYSCALL(x); ret
#define PSEUDO(x,y) ENTRY(x); lea SYS_/**/y, %eax; ; LCALL(7,0); ret