Module Name: src
Committed By: reinoud
Date: Fri May 18 20:21:14 UTC 2018
Modified Files:
src/sys/arch/usermode/target/i386: cpu_i386.c
Log Message:
Use knowledge of mcontext for i386 support
To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.5 src/sys/arch/usermode/target/i386/cpu_i386.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/target/i386/cpu_i386.c
diff -u src/sys/arch/usermode/target/i386/cpu_i386.c:1.4 src/sys/arch/usermode/target/i386/cpu_i386.c:1.5
--- src/sys/arch/usermode/target/i386/cpu_i386.c:1.4 Sat Mar 3 21:15:16 2012
+++ src/sys/arch/usermode/target/i386/cpu_i386.c Fri May 18 20:21:14 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: cpu_i386.c,v 1.4 2012/03/03 21:15:16 reinoud Exp $ */
+/* $NetBSD: cpu_i386.c,v 1.5 2018/05/18 20:21:14 reinoud Exp $ */
/*-
* Copyright (c) 2011 Reinoud Zandijk <[email protected]>
@@ -27,14 +27,9 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
-/*
- * Note that this machdep.c uses the `dummy' mcontext_t defined for usermode.
- * This is basicly a blob of PAGE_SIZE big. We might want to switch over to
- * non-generic mcontext_t's one day, but will this break non-NetBSD hosts?
- */
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu_i386.c,v 1.4 2012/03/03 21:15:16 reinoud Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu_i386.c,v 1.5 2018/05/18 20:21:14 reinoud Exp $");
#include <sys/types.h>
#include <sys/systm.h>
@@ -117,7 +112,7 @@ sendsig_siginfo(const ksiginfo_t *ksi, c
KASSERT(mutex_owned(p->p_lock));
ucp = &pcb->pcb_userret_ucp;
- reg = (register_t *) &ucp->uc_mcontext;
+ reg = (register_t *) &ucp->uc_mcontext.__gregs;
#if 0
thunk_printf("%s: ", __func__);
thunk_printf("flags %d, ", (int) ksi->ksi_flags);
@@ -198,7 +193,7 @@ setregs(struct lwp *l, struct exec_packa
/* set up the user context */
ucp = &pcb->pcb_userret_ucp;
- reg = (int *) &ucp->uc_mcontext;
+ reg = (int *) &ucp->uc_mcontext.__gregs;
for (i = 4; i < 11; i++)
reg[i] = 0;
@@ -228,7 +223,7 @@ setregs(struct lwp *l, struct exec_packa
void
md_syscall_get_syscallnumber(ucontext_t *ucp, uint32_t *code)
{
- uint *reg = (int *) &ucp->uc_mcontext;
+ uint *reg = (int *) &ucp->uc_mcontext.__gregs;
*code = reg[11]; /* EAX */
}
@@ -236,7 +231,7 @@ int
md_syscall_getargs(lwp_t *l, ucontext_t *ucp, int nargs, int argsize,
register_t *args)
{
- uint *reg = (int *) &ucp->uc_mcontext;
+ uint *reg = (int *) &ucp->uc_mcontext.__gregs;
register_t *sp = (register_t *) reg[17];/* ESP */
int ret;
@@ -250,7 +245,7 @@ void
md_syscall_set_returnargs(lwp_t *l, ucontext_t *ucp,
int error, register_t *rval)
{
- register_t *reg = (register_t *) &ucp->uc_mcontext;
+ register_t *reg = (register_t *) &ucp->uc_mcontext.__gregs;
reg[16] &= ~PSL_C; /* EFL */
if (error > 0) {
@@ -270,7 +265,7 @@ register_t
md_get_pc(ucontext_t *ucp)
{
KASSERT(ucp);
- register_t *reg = (register_t *) &ucp->uc_mcontext;
+ register_t *reg = (register_t *) &ucp->uc_mcontext.__gregs;
return reg[14]; /* EIP */
}
@@ -279,7 +274,7 @@ register_t
md_get_sp(ucontext_t *ucp)
{
KASSERT(ucp);
- register_t *reg = (register_t *) &ucp->uc_mcontext;
+ register_t *reg = (register_t *) &ucp->uc_mcontext.__gregs;
return reg[17]; /* ESP */
}
@@ -307,7 +302,7 @@ void
md_syscall_get_opcode(ucontext_t *ucp, uint32_t *opcode)
{
KASSERT(ucp);
- register_t *reg = (register_t *) &ucp->uc_mcontext;
+ register_t *reg = (register_t *) &ucp->uc_mcontext.__gregs;
// uint8_t *p8 = (uint8_t *) (reg[14]);
uint16_t *p16 = (uint16_t*) (reg[14]); /* EIP */
@@ -328,7 +323,7 @@ void
md_syscall_inc_pc(ucontext_t *ucp, uint32_t opcode)
{
KASSERT(ucp);
- uint *reg = (int *) &ucp->uc_mcontext;
+ uint *reg = (int *) &ucp->uc_mcontext.__gregs;
/* advance program counter */
switch (opcode) {
@@ -349,7 +344,7 @@ void
md_syscall_dec_pc(ucontext_t *ucp, uint32_t opcode)
{
KASSERT(ucp);
- uint *reg = (int *) &ucp->uc_mcontext;
+ uint *reg = (int *) &ucp->uc_mcontext.__gregs;
switch (opcode) {
case 0xff0f: /* UD1 */
