1*54382Storek /*- 2*54382Storek * %sccs.include.redist.c% 3*54382Storek * 4*54382Storek * @(#)SYS.h 5.1 (Berkeley) 06/25/92 5*54382Storek */ 6*54382Storek 7*54382Storek #include <sys/syscall.h> 8*54382Storek #include <machine/trap.h> 9*54382Storek 10*54382Storek #ifdef PROF 11*54382Storek #define ENTRY(x) \ 12*54382Storek .align 4; .globl _##x; .proc 1; _##x:; .data; .align 4; 1: .long 0; \ 13*54382Storek .text; save %sp,-96,%sp; sethi %hi(1b),%o0; call mcount; \ 14*54382Storek or %o0,%lo(1b),%o0; restore 15*54382Storek #else 16*54382Storek #define ENTRY(x) \ 17*54382Storek .align 4; .globl _##x; .proc 1; _##x: 18*54382Storek #endif 19*54382Storek 20*54382Storek /* 21*54382Storek * ERROR branches to cerror. This is done with a macro so that I can 22*54382Storek * change it to be position independent later, if need be. 23*54382Storek */ 24*54382Storek #define ERROR() \ 25*54382Storek sethi %hi(cerror),%g1; or %lo(cerror),%g1,%g1; jmp %g1; nop 26*54382Storek 27*54382Storek /* 28*54382Storek * SYSCALL is used when further action must be taken before returning. 29*54382Storek * Note that it adds a `nop' over what we could do, if we only knew what 30*54382Storek * came at label 1.... 31*54382Storek */ 32*54382Storek #define SYSCALL(x) \ 33*54382Storek ENTRY(x); mov SYS_##x,%g1; t ST_SYSCALL; bcc 1f; nop; ERROR(); 1: 34*54382Storek 35*54382Storek /* 36*54382Storek * RSYSCALL is used when the system call should just return. Here 37*54382Storek * we use the SYSCALL_RFLAG to put the `success' return address in %g7 38*54382Storek * and avoid a branch. 39*54382Storek */ 40*54382Storek #define RSYSCALL(x) \ 41*54382Storek ENTRY(x); mov (SYS_##x)|SYSCALL_RFLAG,%g1; add %o7,8,%g7; \ 42*54382Storek t ST_SYSCALL; ERROR() 43*54382Storek 44*54382Storek /* 45*54382Storek * PSEUDO(x,y) is like RSYSCALL(y) except that the name is x. 46*54382Storek */ 47*54382Storek #define PSEUDO(x,y) \ 48*54382Storek ENTRY(x); mov (SYS_##y)|SYSCALL_RFLAG,%g1; add %o7,8,%g7; \ 49*54382Storek t ST_SYSCALL; ERROR() 50*54382Storek 51*54382Storek #define ASMSTR .asciz 52*54382Storek 53*54382Storek .globl cerror 54