| SYS.h (71579) | SYS.h (71770) |
|---|---|
| 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 21 unchanged lines hidden (view full) --- 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 37 * | 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 21 unchanged lines hidden (view full) --- 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 37 * |
| 38 * $FreeBSD: head/lib/libc/amd64/SYS.h 71579 2001-01-24 13:01:12Z deischen $ | 38 * $FreeBSD: head/lib/libc/amd64/SYS.h 71770 2001-01-29 03:23:46Z deischen $ |
| 39 */ 40 41#include <sys/syscall.h> 42#include "DEFS.h" 43 44#define SYSCALL(x) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); \ | 39 */ 40 41#include <sys/syscall.h> 42#include "DEFS.h" 43 44#define SYSCALL(x) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); \ |
| 45 ENTRY(__CONCAT(_,x)); \ 46 .weak CNAME(x); \ 47 .set CNAME(x),CNAME(__CONCAT(_,x)); \ 48 lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b 49 50#define RSYSCALL(x) SYSCALL(x); ret 51 52#define PSEUDO(x,y) ENTRY(__CONCAT(_,x)); \ 53 .weak CNAME(x); \ 54 .set CNAME(x),CNAME(__CONCAT(_,x)); \ 55 lea __CONCAT(SYS_,y), %eax; KERNCALL; ret 56 57/* gas messes up offset -- although we don't currently need it, do for BCS */ 58#define LCALL(x,y) .byte 0x9a ; .long y; .word x 59 60/* 61 * Design note: 62 * 63 * The macros PSYSCALL() and PRSYSCALL() are intended for use where a 64 * syscall needs to be renamed in the threaded library. 65 */ 66/* 67 * For the thread_safe versions, we prepend __sys_ to the function 68 * name so that the 'C' wrapper can go around the real name. 69 */ 70#define PSYSCALL(x) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); \ | |
| 71 ENTRY(__CONCAT(__sys_,x)); \ 72 .weak CNAME(x); \ 73 .set CNAME(x),CNAME(__CONCAT(__sys_,x)); \ 74 .weak CNAME(__CONCAT(_,x)); \ 75 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ 76 lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b 77 | 45 ENTRY(__CONCAT(__sys_,x)); \ 46 .weak CNAME(x); \ 47 .set CNAME(x),CNAME(__CONCAT(__sys_,x)); \ 48 .weak CNAME(__CONCAT(_,x)); \ 49 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ 50 lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b 51 |
| 78#define PRSYSCALL(x) PSYSCALL(x); ret | 52#define RSYSCALL(x) SYSCALL(x); ret |
| 79 | 53 |
| 80#define PPSEUDO(x,y) ENTRY(__CONCAT(__sys_,x)); \ 81 .weak CNAME(x); \ 82 .set CNAME(x),CNAME(__CONCAT(__sys_,x)); \ | 54#define PSEUDO(x) ENTRY(__CONCAT(__sys_,x)); \ |
| 83 .weak CNAME(__CONCAT(_,x)); \ 84 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ | 55 .weak CNAME(__CONCAT(_,x)); \ 56 .set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \ |
| 85 lea __CONCAT(SYS_,y), %eax; KERNCALL; ret | 57 lea __CONCAT(SYS_,x), %eax; KERNCALL; ret |
| 86 | 58 |
| 59/* gas messes up offset -- although we don't currently need it, do for BCS */ 60#define LCALL(x,y) .byte 0x9a ; .long y; .word x 61 |
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| 87#ifdef __ELF__ 88#define KERNCALL int $0x80 /* Faster */ 89#else 90#define KERNCALL LCALL(7,0) /* The old way */ 91#endif | 62#ifdef __ELF__ 63#define KERNCALL int $0x80 /* Faster */ 64#else 65#define KERNCALL LCALL(7,0) /* The old way */ 66#endif |