| SYS.h (15634) | SYS.h (17706) |
|---|---|
| 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 * $Id: SYS.h,v 1.3 1996/01/22 00:00:51 julian Exp $ | 38 * $Id: SYS.h,v 1.4 1996/05/05 07:56:03 peter Exp $ |
| 39 */ 40 41#include <sys/syscall.h> 42#include "DEFS.h" 43 44#ifdef PIC 45#define PIC_PROLOGUE \ 46 pushl %ebx; \ --- 12 unchanged lines hidden (view full) --- 59#define PIC_PLT(x) x 60#define PIC_GOT(x) x 61#define PIC_GOTOFF(x) x 62#endif 63 64#define SYSCALL(x) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); ENTRY(x); lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b 65#define RSYSCALL(x) SYSCALL(x); ret 66 | 39 */ 40 41#include <sys/syscall.h> 42#include "DEFS.h" 43 44#ifdef PIC 45#define PIC_PROLOGUE \ 46 pushl %ebx; \ --- 12 unchanged lines hidden (view full) --- 59#define PIC_PLT(x) x 60#define PIC_GOT(x) x 61#define PIC_GOTOFF(x) x 62#endif 63 64#define SYSCALL(x) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); ENTRY(x); lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b 65#define RSYSCALL(x) SYSCALL(x); ret 66 |
| 67#define PSEUDO(x,y) ENTRY(x); lea __CONCAT(SYS_,y), %eax; KERNCALL; ret 68#define CALL(x,y) call CNAME(y); addl $4*x,%esp 69/* gas fucks up offset -- although we don't currently need it, do for BCS */ 70#define LCALL(x,y) .byte 0x9a ; .long y; .word x 71 |
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| 67/* | 72/* |
| 73 * Design note: 74 * 75 * The macros PSYSCALL() and PRSYSCALL() are intended for use where a 76 * syscall needs to be renamed in the threaded library. When building 77 * a normal library, they default to the traditional SYSCALL() and 78 * RSYSCALL(). This avoids the need to #ifdef _THREAD_SAFE everywhere 79 * that the renamed function needs to be called. 80 */ 81#ifdef _THREAD_SAFE /* in case */ 82/* |
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| 68 * For the thread_safe versions, we prepend _thread_sys_ to the function 69 * name so that the 'C' wrapper can go around the real name. 70 */ | 83 * For the thread_safe versions, we prepend _thread_sys_ to the function 84 * name so that the 'C' wrapper can go around the real name. 85 */ |
| 71#ifdef _THREAD_SAFE /* in case */ 72#define PSYSCALL(x,y) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); ENTRY(y); lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b 73#define PRSYSCALL(x,y) PSYSCALL(x,y); ret | 86#define PSYSCALL(x) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); ENTRY(_thread_sys_/**/x); lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b 87#define PRSYSCALL(x) PSYSCALL(x); ret 88#define PPSEUDO(x,y) ENTRY(_thread_sys_/**/x); lea __CONCAT(SYS_,y), %eax; KERNCALL; ret 89#else 90/* 91 * The non-threaded library defaults to traditional syscalls where 92 * the function name matches the syscall name. 93 */ 94#define PSYSCALL(x) SYSCALL(x) 95#define PRSYSCALL(x) RSYSCALL(x) 96#define PPSEUDO(x,y) PSEUDO(x,y) |
| 74#endif 75 | 97#endif 98 |
| 76#define PSEUDO(x,y) ENTRY(x); lea __CONCAT(SYS_,y), %eax; KERNCALL; ret 77#define CALL(x,y) call CNAME(y); addl $4*x,%esp 78/* gas fucks up offset -- although we don't currently need it, do for BCS */ 79#define LCALL(x,y) .byte 0x9a ; .long y; .word x 80 | |
| 81#ifdef __ELF__ 82#define KERNCALL int $0x80 /* Faster */ 83#else 84#define KERNCALL LCALL(7,0) /* The old way */ 85#endif 86 87#define ASMSTR .asciz | 99#ifdef __ELF__ 100#define KERNCALL int $0x80 /* Faster */ 101#else 102#define KERNCALL LCALL(7,0) /* The old way */ 103#endif 104 105#define ASMSTR .asciz |