diff options
Diffstat (limited to 'lib/libc/amd64/SYS.h')
| -rw-r--r-- | lib/libc/amd64/SYS.h | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/lib/libc/amd64/SYS.h b/lib/libc/amd64/SYS.h index 9e989e5..caea98f 100644 --- a/lib/libc/amd64/SYS.h +++ b/lib/libc/amd64/SYS.h @@ -35,7 +35,7 @@ * * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 * - * $Id: SYS.h,v 1.2 1994/08/05 01:17:57 wollman Exp $ + * $Id: SYS.h,v 1.3 1996/01/22 00:00:51 julian Exp $ */ #include <sys/syscall.h> @@ -61,28 +61,27 @@ #define PIC_GOTOFF(x) x #endif -#define SYSCALL(x) 2: jmp cerror; ENTRY(x); lea SYS_/**/x,%eax; LCALL(7,0); jb 2b +#define SYSCALL(x) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); ENTRY(x); lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b #define RSYSCALL(x) SYSCALL(x); ret -#ifdef _THREAD_SAFE /* - * Support for user-space threads which require that some syscalls be - * private to the threaded library. + * For the thread_safe versions, we prepend _thread_sys_ to the function + * name so that the 'C' wrapper can go around the real name. */ -#define PSYSCALL(x) 2: jmp cerror; ENTRY(_thread_sys_/**/x); lea SYS_/**/x,%eax; LCALL(7,0); jb 2b -#else -/* - * The non-threaded library defaults to traditional syscalls where - * the function name matches the syscall name. - */ -#define PSYSCALL(x) SYSCALL(x) +#ifdef _THREAD_SAFE /* in case */ +#define PSYSCALL(x,y) 2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror)); ENTRY(y); lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b +#define PRSYSCALL(x,y) PSYSCALL(x,y); ret #endif -#define PRSYSCALL(x) PSYSCALL(x); ret -#define PSEUDO(x,y) ENTRY(x); lea SYS_/**/y, %eax; ; LCALL(7,0); ret -#define CALL(x,y) call _/**/y; addl $4*x,%esp + +#define PSEUDO(x,y) ENTRY(x); lea __CONCAT(SYS_,y), %eax; KERNCALL; ret +#define CALL(x,y) call CNAME(y); addl $4*x,%esp /* gas fucks up offset -- although we don't currently need it, do for BCS */ #define LCALL(x,y) .byte 0x9a ; .long y; .word x -#define ASMSTR .asciz +#ifdef __ELF__ +#define KERNCALL int $0x80 /* Faster */ +#else +#define KERNCALL LCALL(7,0) /* The old way */ +#endif - .globl cerror +#define ASMSTR .asciz |
