操作系统SunOS 4.1.3版本的源码
源代码在线查看： sys.h
/* @(#)SYS.h 1.1 92/07/30 SMI; from UCB 4.1 83/05/10 */ #include #include "PIC.h" .globl cerror #ifdef PROF .globl mcount #define ENTRY(x) .globl _/**/x;\ _/**/x: link a6,#0;\ lea x/**/1,a0;\ .data; x/**/1: .long 0; .text;\ JBSR(mcount, a1);\ unlk a6 #else #define ENTRY(x) .globl _/**/x; _/**/x: #endif #define PARAM sp@(4) #define PARAM2 sp@(8) #define PSEUDO(x,y) ENTRY(x); pea SYS_/**/y; trap #0 #define SYSCALL(x) err: CERROR(a0); ENTRY(x); pea SYS_/**/x; trap #0; jcs err #define BSDSYSCALL(x) err: CERROR(a0); ENTRY(_/**/x); pea SYS_/**/x; trap #0; jcs err #define RET rts #ifdef PIC #define CERROR(r) \ PIC_SETUP(r); \ movl r@(cerror:w),r; \ jmp r@; #else #define CERROR(r) jmp cerror; #endif
