From 80fdf4709497a276a826c9d8426ef1effc8f8e33 Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@redhat.com>
Date: Thu, 20 Dec 2007 03:58:00 -0800
Subject: [PATCH] [POWERPC] Add user_regset_view definitions
This provides the task_user_regset_view entry point and support for
all the native-mode (64 on CONFIG_PPC64, 32 on CONFIG_PPC32) thread
register state. This will enable generic machine-independent code to
access user-mode threads' registers for debugging and dumping.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
arch/powerpc/kernel/Makefile | 2 ++
arch/powerpc/kernel/ptrace.c | 52 ++++++++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+)
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 58dbfeff9b4da..ac07112b65dea 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -2,6 +2,8 @@
# Makefile for the linux kernel.
#
+CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
+
ifeq ($(CONFIG_PPC64),y)
CFLAGS_prom_init.o += -mno-minimal-toc
endif
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index d9b952faee733..eb00274e84ba9 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -455,6 +455,58 @@ static int set_evrregs(struct task_struct *task, unsigned long *data)
#endif /* CONFIG_SPE */
+/*
+ * These are our native regset flavors.
+ */
+enum powerpc_regset {
+ REGSET_GPR,
+ REGSET_FPR,
+#ifdef CONFIG_ALTIVEC
+ REGSET_VMX,
+#endif
+#ifdef CONFIG_SPE
+ REGSET_SPE,
+#endif
+};
+
+static const struct user_regset native_regsets[] = {
+ [REGSET_GPR] = {
+ .core_note_type = NT_PRSTATUS, .n = ELF_NGREG,
+ .size = sizeof(long), .align = sizeof(long),
+ .get = gpr_get, .set = gpr_set
+ },
+ [REGSET_FPR] = {
+ .core_note_type = NT_PRFPREG, .n = ELF_NFPREG,
+ .size = sizeof(double), .align = sizeof(double),
+ .get = fpr_get, .set = fpr_set
+ },
+#ifdef CONFIG_ALTIVEC
+ [REGSET_VMX] = {
+ .core_note_type = NT_PPC_VMX, .n = 34,
+ .size = sizeof(vector128), .align = sizeof(vector128),
+ .active = vr_active, .get = vr_get, .set = vr_set
+ },
+#endif
+#ifdef CONFIG_SPE
+ [REGSET_SPE] = {
+ .n = 35,
+ .size = sizeof(u32), .align = sizeof(u32),
+ .active = evr_active, .get = evr_get, .set = evr_set
+ },
+#endif
+};
+
+static const struct user_regset_view user_ppc_native_view = {
+ .name = UTS_MACHINE, .e_machine = ELF_ARCH, .ei_osabi = ELF_OSABI,
+ .regsets = native_regsets, .n = ARRAY_SIZE(native_regsets)
+};
+
+const struct user_regset_view *task_user_regset_view(struct task_struct *task)
+{
+ return &user_ppc_native_view;
+}
+
+
void user_enable_single_step(struct task_struct *task)
{
struct pt_regs *regs = task->thread.regs;
--
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