diff options
Diffstat (limited to 'lib/libc/i386/DEFS.h')
| -rw-r--r-- | lib/libc/i386/DEFS.h | 94 |
1 files changed, 84 insertions, 10 deletions
diff --git a/lib/libc/i386/DEFS.h b/lib/libc/i386/DEFS.h index 10d9f9b..0849a11 100644 --- a/lib/libc/i386/DEFS.h +++ b/lib/libc/i386/DEFS.h @@ -1,6 +1,6 @@ /*- - * Copyright (c) 1990, 1993 - * The Regents of the University of California. All rights reserved. + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. @@ -33,15 +33,89 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * @(#)DEFS.h 8.1 (Berkeley) 6/4/93 + * from: @(#)DEFS.h 5.1 (Berkeley) 4/23/90 + * + * $Id$ */ -#ifdef PROF -#define ENTRY(x) .globl _/**/x; _/**/x: \ - .data; 1:; .long 0; .text; lea 1b,%eax ; call mcount -#define ASENTRY(x) .globl x; x: \ - .data; 1:; .long 0; .text; lea 1b,%eax ; call mcount +#include <sys/cdefs.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 ENTRY(x) .globl _/**/x; _/**/x: -#define ASENTRY(x) .globl x; x: +#define PIC_PROLOGUE +#define PIC_EPILOGUE +#define PIC_PLT(x) x +#define PIC_GOT(x) x +#define PIC_GOTOFF(x) x +#endif + +/* + * CNAME and HIDENAME manage the relationship between symbol names in C + * and the equivalent assembly language names. CNAME is given a name as + * it would be used in a C program. It expands to the equivalent assembly + * language name. HIDENAME is given an assembly-language name, and expands + * to a possibly-modified form that will be invisible to C programs. + */ +#if defined(__ELF__) /* { */ +#define CNAME(csym) csym +#define HIDENAME(asmsym) __CONCAT(.,asmsym) +#else /* } { */ +#define CNAME(csym) __CONCAT(_,csym) +#define HIDENAME(asmsym) asmsym +#endif /* } */ + + +/* XXX should use align 4,0x90 for -m486. */ +#define _START_ENTRY .text; .align 2,0x90; +#if 0 +/* Data is not used, except perhaps by non-g prof, which we don't support. */ +#define _MID_ENTRY .data; .align 2; 8:; .long 0; \ + .text; lea 8b,%eax; +#else +#define _MID_ENTRY +#endif + +#ifdef PROF + +#define ALTENTRY(x) _START_ENTRY \ + .globl CNAME(x); .type CNAME(x),@function; CNAME(x):; \ + _MID_ENTRY \ + call HIDENAME(mcount); jmp 9f + +#define ENTRY(x) _START_ENTRY \ + .globl CNAME(x); .type CNAME(x),@function; CNAME(x):; \ + _MID_ENTRY \ + call HIDENAME(mcount); 9: + + +#define ALTASENTRY(x) _START_ENTRY \ + .globl x; .type x,@function; x:; \ + _MID_ENTRY \ + call HIDENAME(mcount); jmp 9f + +#define ASENTRY(x) _START_ENTRY \ + .globl x; .type x,@function; x:; \ + _MID_ENTRY \ + call HIDENAME(mcount); 9: + +#else /* !PROF */ + +#define ENTRY(x) _START_ENTRY .globl CNAME(x); .type CNAME(x),@function; \ + CNAME(x): +#define ALTENTRY(x) ENTRY(x) + +#define ASENTRY(x) _START_ENTRY .globl x; .type x,@function; x: +#define ALTASENTRY(x) ASENTRY(x) + #endif |
