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authorPaul Mundt <lethal@linux-sh.org>2008-09-12 22:42:10 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-09-12 22:42:10 +0900
commit5dadb34394d59313e2e763ae8e2fc911e9fc557c (patch)
tree843585369634453507a9d226d6b1299eb33d14b0 /arch/sh/kernel/ptrace_32.c
parent6bff1592d85c9fa1f1d9d4de1cd0e104279544a6 (diff)
downloadlinux-5dadb34394d59313e2e763ae8e2fc911e9fc557c.tar.bz2
sh: Add DSP registers to regset interface.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/ptrace_32.c')
-rw-r--r--arch/sh/kernel/ptrace_32.c86
1 files changed, 59 insertions, 27 deletions
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index 5e3ba10255cd..20b103f6c33b 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -145,11 +145,50 @@ static int genregs_set(struct task_struct *target,
return ret;
}
+#ifdef CONFIG_SH_DSP
+static int dspregs_get(struct task_struct *target,
+ const struct user_regset *regset,
+ unsigned int pos, unsigned int count,
+ void *kbuf, void __user *ubuf)
+{
+ const struct pt_dspregs *regs = task_pt_dspregs(target);
+ int ret;
+
+ ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, regs,
+ 0, sizeof(struct pt_dspregs));
+ if (!ret)
+ ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
+ sizeof(struct pt_dspregs), -1);
+
+ return ret;
+}
+
+static int dspregs_set(struct task_struct *target,
+ const struct user_regset *regset,
+ unsigned int pos, unsigned int count,
+ const void *kbuf, const void __user *ubuf)
+{
+ struct pt_dspregs *regs = task_pt_dspregs(target);
+ int ret;
+
+ ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, regs,
+ 0, sizeof(struct pt_dspregs));
+ if (!ret)
+ ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+ sizeof(struct pt_dspregs), -1);
+
+ return ret;
+}
+#endif
+
/*
* These are our native regset flavours.
*/
enum sh_regset {
REGSET_GENERAL,
+#ifdef CONFIG_SH_DSP
+ REGSET_DSP,
+#endif
};
static const struct user_regset sh_regsets[] = {
@@ -166,6 +205,16 @@ static const struct user_regset sh_regsets[] = {
.get = genregs_get,
.set = genregs_set,
},
+
+#ifdef CONFIG_SH_DSP
+ [REGSET_DSP] = {
+ .n = sizeof(struct pt_dspregs) / sizeof(long),
+ .size = sizeof(long),
+ .align = sizeof(long),
+ .get = dspregs_get,
+ .set = dspregs_set,
+ },
+#endif
};
static const struct user_regset_view user_sh_native_view = {
@@ -242,33 +291,16 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
0, sizeof(struct pt_regs),
(const void __user *)data);
#ifdef CONFIG_SH_DSP
- case PTRACE_GETDSPREGS: {
- unsigned long dp;
-
- ret = -EIO;
- dp = ((unsigned long) child) + THREAD_SIZE -
- sizeof(struct pt_dspregs);
- if (*((int *) (dp - 4)) == SR_FD) {
- copy_to_user((void *)addr, (void *) dp,
- sizeof(struct pt_dspregs));
- ret = 0;
- }
- break;
- }
-
- case PTRACE_SETDSPREGS: {
- unsigned long dp;
-
- ret = -EIO;
- dp = ((unsigned long) child) + THREAD_SIZE -
- sizeof(struct pt_dspregs);
- if (*((int *) (dp - 4)) == SR_FD) {
- copy_from_user((void *) dp, (void *)addr,
- sizeof(struct pt_dspregs));
- ret = 0;
- }
- break;
- }
+ case PTRACE_GETDSPREGS:
+ return copy_regset_to_user(child, &user_sh_native_view,
+ REGSET_DSP,
+ 0, sizeof(struct pt_dspregs),
+ (void __user *)data);
+ case PTRACE_SETDSPREGS:
+ return copy_regset_from_user(child, &user_sh_native_view,
+ REGSET_DSP,
+ 0, sizeof(struct pt_dspregs),
+ (const void __user *)data);
#endif
#ifdef CONFIG_BINFMT_ELF_FDPIC
case PTRACE_GETFDPIC: {