Module Name: src Committed By: reinoud Date: Wed Dec 14 18:51:39 UTC 2011
Modified Files: src/sys/arch/usermode/include: machdep.h src/sys/arch/usermode/usermode: machdep.c trap.c Log Message: Remove the need for a siginfo structure in illegal instruction handling. To generate a diff of this commit: cvs rdiff -u -r1.5 -r1.6 src/sys/arch/usermode/include/machdep.h cvs rdiff -u -r1.35 -r1.36 src/sys/arch/usermode/usermode/machdep.c cvs rdiff -u -r1.44 -r1.45 src/sys/arch/usermode/usermode/trap.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/arch/usermode/include/machdep.h diff -u src/sys/arch/usermode/include/machdep.h:1.5 src/sys/arch/usermode/include/machdep.h:1.6 --- src/sys/arch/usermode/include/machdep.h:1.5 Wed Dec 14 04:12:22 2011 +++ src/sys/arch/usermode/include/machdep.h Wed Dec 14 18:51:39 2011 @@ -1,4 +1,4 @@ -/* $NetBSD: machdep.h,v 1.5 2011/12/14 04:12:22 jmcneill Exp $ */ +/* $NetBSD: machdep.h,v 1.6 2011/12/14 18:51:39 reinoud Exp $ */ /*- * Copyright (c) 2011 Reinoud Zandijk <rein...@netbsd.org> @@ -26,7 +26,7 @@ * POSSIBILITY OF SUCH DAMAGE. */ -int md_syscall_check_opcode(void *ptr); +int md_syscall_check_opcode(ucontext_t *ucp); void md_syscall_get_opcode(ucontext_t *ucp, uint32_t *opcode); void md_syscall_get_syscallnumber(ucontext_t *ucp, uint32_t *code); int md_syscall_getargs(lwp_t *l, ucontext_t *ucp, int nargs, int argsize, Index: src/sys/arch/usermode/usermode/machdep.c diff -u src/sys/arch/usermode/usermode/machdep.c:1.35 src/sys/arch/usermode/usermode/machdep.c:1.36 --- src/sys/arch/usermode/usermode/machdep.c:1.35 Tue Dec 13 20:59:20 2011 +++ src/sys/arch/usermode/usermode/machdep.c Wed Dec 14 18:51:39 2011 @@ -1,4 +1,4 @@ -/* $NetBSD: machdep.c,v 1.35 2011/12/13 20:59:20 reinoud Exp $ */ +/* $NetBSD: machdep.c,v 1.36 2011/12/14 18:51:39 reinoud Exp $ */ /*- * Copyright (c) 2011 Reinoud Zandijk <rein...@netbsd.org> @@ -32,7 +32,7 @@ #include "opt_urkelvisor.h" #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.35 2011/12/13 20:59:20 reinoud Exp $"); +__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.36 2011/12/14 18:51:39 reinoud Exp $"); #include <sys/types.h> #include <sys/param.h> @@ -274,15 +274,16 @@ md_syscall_set_returnargs(lwp_t *l, ucon } int -md_syscall_check_opcode(void *ptr) +md_syscall_check_opcode(ucontext_t *ucp) { - uint16_t *p16; + uint32_t opcode; + + md_syscall_get_opcode(ucp, &opcode); /* undefined instruction */ - p16 = (uint16_t *) ptr; - if (*p16 == 0xff0f) + if (opcode == 0xff0f) return 1; - if (*p16 == 0xff0b) + if (opcode == 0xff0b) return 1; /* TODO int $80 and sysenter */ Index: src/sys/arch/usermode/usermode/trap.c diff -u src/sys/arch/usermode/usermode/trap.c:1.44 src/sys/arch/usermode/usermode/trap.c:1.45 --- src/sys/arch/usermode/usermode/trap.c:1.44 Wed Dec 14 04:12:22 2011 +++ src/sys/arch/usermode/usermode/trap.c Wed Dec 14 18:51:39 2011 @@ -1,4 +1,4 @@ -/* $NetBSD: trap.c,v 1.44 2011/12/14 04:12:22 jmcneill Exp $ */ +/* $NetBSD: trap.c,v 1.45 2011/12/14 18:51:39 reinoud Exp $ */ /*- * Copyright (c) 2011 Reinoud Zandijk <rein...@netbsd.org> @@ -27,7 +27,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.44 2011/12/14 04:12:22 jmcneill Exp $"); +__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.45 2011/12/14 18:51:39 reinoud Exp $"); #include <sys/types.h> #include <sys/param.h> @@ -228,7 +228,7 @@ illegal_instruction_handler(int sig, sig memcpy(&pcb->pcb_userret_ucp, uct, sizeof(ucontext_t)); /* if its a syscall ... */ - if (md_syscall_check_opcode(info->si_addr)) { + if (md_syscall_check_opcode(uct)) { /* switch to the syscall entry on return from signal */ memcpy(uct, &pcb->pcb_syscall_ucp, sizeof(ucontext_t)); return;