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-rw-r--r--arch/sh/Kconfig1
-rw-r--r--arch/sh/include/asm/Kbuild2
-rw-r--r--arch/sh/include/asm/elf.h27
-rw-r--r--arch/sh/include/asm/kprobes.h1
-rw-r--r--arch/sh/include/asm/processor_32.h3
-rw-r--r--arch/sh/include/asm/processor_64.h3
-rw-r--r--arch/sh/include/asm/ptrace.h169
-rw-r--r--arch/sh/include/asm/ptrace_32.h83
-rw-r--r--arch/sh/include/asm/ptrace_64.h20
-rw-r--r--arch/sh/kernel/Makefile2
-rw-r--r--arch/sh/kernel/kprobes.c100
-rw-r--r--arch/sh/kernel/ptrace.c33
-rw-r--r--arch/sh/kernel/ptrace_32.c27
-rw-r--r--arch/sh/kernel/ptrace_64.c79
14 files changed, 387 insertions, 163 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 573fca1fbd9..e6b1f207f7a 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -23,6 +23,7 @@ config SUPERH
select HAVE_KERNEL_LZMA
select HAVE_KERNEL_LZO
select HAVE_SYSCALL_TRACEPOINTS
+ select HAVE_REGS_AND_STACK_ACCESS_API
select RTC_LIB
select GENERIC_ATOMIC64
help
diff --git a/arch/sh/include/asm/Kbuild b/arch/sh/include/asm/Kbuild
index 46cb93477bc..b4d3462f1dc 100644
--- a/arch/sh/include/asm/Kbuild
+++ b/arch/sh/include/asm/Kbuild
@@ -8,3 +8,5 @@ unifdef-y += unistd_32.h
unifdef-y += unistd_64.h
unifdef-y += posix_types_32.h
unifdef-y += posix_types_64.h
+unifdef-y += ptrace_32.h
+unifdef-y += ptrace_64.h
diff --git a/arch/sh/include/asm/elf.h b/arch/sh/include/asm/elf.h
index ce830faeebb..f38112be67d 100644
--- a/arch/sh/include/asm/elf.h
+++ b/arch/sh/include/asm/elf.h
@@ -50,25 +50,14 @@
#define R_SH_GOTPC 167
/* FDPIC relocs */
-#define R_SH_GOT20 70
-#define R_SH_GOTOFF20 71
-#define R_SH_GOTFUNCDESC 72
-#define R_SH_GOTFUNCDESC20 73
-#define R_SH_GOTOFFFUNCDESC 74
-#define R_SH_GOTOFFFUNCDESC20 75
-#define R_SH_FUNCDESC 76
-#define R_SH_FUNCDESC_VALUE 77
-
-#if 0 /* XXX - later .. */
-#define R_SH_GOT20 198
-#define R_SH_GOTOFF20 199
-#define R_SH_GOTFUNCDESC 200
-#define R_SH_GOTFUNCDESC20 201
-#define R_SH_GOTOFFFUNCDESC 202
-#define R_SH_GOTOFFFUNCDESC20 203
-#define R_SH_FUNCDESC 204
-#define R_SH_FUNCDESC_VALUE 205
-#endif
+#define R_SH_GOT20 201
+#define R_SH_GOTOFF20 202
+#define R_SH_GOTFUNCDESC 203
+#define R_SH_GOTFUNCDESC20 204
+#define R_SH_GOTOFFFUNCDESC 205
+#define R_SH_GOTOFFFUNCDESC20 206
+#define R_SH_FUNCDESC 207
+#define R_SH_FUNCDESC_VALUE 208
/* SHmedia relocs */
#define R_SH_IMM_LOW16 246
diff --git a/arch/sh/include/asm/kprobes.h b/arch/sh/include/asm/kprobes.h
index 036c3311233..134f3980e44 100644
--- a/arch/sh/include/asm/kprobes.h
+++ b/arch/sh/include/asm/kprobes.h
@@ -16,7 +16,6 @@ typedef insn_size_t kprobe_opcode_t;
? (MAX_STACK_SIZE) \
: (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))
-#define regs_return_value(_regs) ((_regs)->regs[0])
#define flush_insn_slot(p) do { } while (0)
#define kretprobe_blacklist_size 0
diff --git a/arch/sh/include/asm/processor_32.h b/arch/sh/include/asm/processor_32.h
index 61a445d2d02..46d5179c9f4 100644
--- a/arch/sh/include/asm/processor_32.h
+++ b/arch/sh/include/asm/processor_32.h
@@ -13,7 +13,6 @@
#include <linux/linkage.h>
#include <asm/page.h>
#include <asm/types.h>
-#include <asm/ptrace.h>
#include <asm/hw_breakpoint.h>
/*
@@ -194,8 +193,6 @@ extern unsigned long get_wchan(struct task_struct *p);
#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc)
#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[15])
-#define user_stack_pointer(_regs) ((_regs)->regs[15])
-
#if defined(CONFIG_CPU_SH2A) || defined(CONFIG_CPU_SH4)
#define PREFETCH_STRIDE L1_CACHE_BYTES
#define ARCH_HAS_PREFETCH
diff --git a/arch/sh/include/asm/processor_64.h b/arch/sh/include/asm/processor_64.h
index 621bc4618c6..2a541ddb5a1 100644
--- a/arch/sh/include/asm/processor_64.h
+++ b/arch/sh/include/asm/processor_64.h
@@ -17,7 +17,6 @@
#include <linux/compiler.h>
#include <asm/page.h>
#include <asm/types.h>
-#include <asm/ptrace.h>
#include <cpu/registers.h>
/*
@@ -231,7 +230,5 @@ extern unsigned long get_wchan(struct task_struct *p);
#define KSTK_EIP(tsk) ((tsk)->thread.pc)
#define KSTK_ESP(tsk) ((tsk)->thread.sp)
-#define user_stack_pointer(_regs) ((_regs)->regs[15])
-
#endif /* __ASSEMBLY__ */
#endif /* __ASM_SH_PROCESSOR_64_H */
diff --git a/arch/sh/include/asm/ptrace.h b/arch/sh/include/asm/ptrace.h
index 2168fde2561..f6edc10aa0d 100644
--- a/arch/sh/include/asm/ptrace.h
+++ b/arch/sh/include/asm/ptrace.h
@@ -3,90 +3,7 @@
/*
* Copyright (C) 1999, 2000 Niibe Yutaka
- *
- */
-#if defined(__SH5__)
-struct pt_regs {
- unsigned long long pc;
- unsigned long long sr;
- long long syscall_nr;
- unsigned long long regs[63];
- unsigned long long tregs[8];
- unsigned long long pad[2];
-};
-#else
-/*
- * GCC defines register number like this:
- * -----------------------------
- * 0 - 15 are integer registers
- * 17 - 22 are control/special registers
- * 24 - 39 fp registers
- * 40 - 47 xd registers
- * 48 - fpscr register
- * -----------------------------
- *
- * We follows above, except:
- * 16 --- program counter (PC)
- * 22 --- syscall #
- * 23 --- floating point communication register
*/
-#define REG_REG0 0
-#define REG_REG15 15
-
-#define REG_PC 16
-
-#define REG_PR 17
-#define REG_SR 18
-#define REG_GBR 19
-#define REG_MACH 20
-#define REG_MACL 21
-
-#define REG_SYSCALL 22
-
-#define REG_FPREG0 23
-#define REG_FPREG15 38
-#define REG_XFREG0 39
-#define REG_XFREG15 54
-
-#define REG_FPSCR 55
-#define REG_FPUL 56
-
-/*
- * This struct defines the way the registers are stored on the
- * kernel stack during a system call or other kernel entry.
- */
-struct pt_regs {
- unsigned long regs[16];
- unsigned long pc;
- unsigned long pr;
- unsigned long sr;
- unsigned long gbr;
- unsigned long mach;
- unsigned long macl;
- long tra;
-};
-
-/*
- * This struct defines the way the DSP registers are stored on the
- * kernel stack during a system call or other kernel entry.
- */
-struct pt_dspregs {
- unsigned long a1;
- unsigned long a0g;
- unsigned long a1g;
- unsigned long m0;
- unsigned long m1;
- unsigned long a0;
- unsigned long x0;
- unsigned long x1;
- unsigned long y0;
- unsigned long y1;
- unsigned long dsr;
- unsigned long rs;
- unsigned long re;
- unsigned long mod;
-};
-#endif
#define PTRACE_GETREGS 12 /* General registers */
#define PTRACE_SETREGS 13
@@ -107,22 +24,102 @@ struct pt_dspregs {
#define PT_DATA_ADDR 248 /* &(struct user)->start_data */
#define PT_TEXT_LEN 252
+#if defined(__SH5__) || defined(CONFIG_CPU_SH5)
+#include "ptrace_64.h"
+#else
+#include "ptrace_32.h"
+#endif
+
#ifdef __KERNEL__
+
+#include <linux/stringify.h>
+#include <linux/stddef.h>
+#include <linux/thread_info.h>
#include <asm/addrspace.h>
#include <asm/page.h>
#include <asm/system.h>
#define user_mode(regs) (((regs)->sr & 0x40000000)==0)
+#define user_stack_pointer(regs) ((unsigned long)(regs)->regs[15])
+#define kernel_stack_pointer(regs) ((unsigned long)(regs)->regs[15])
#define instruction_pointer(regs) ((unsigned long)(regs)->pc)
extern void show_regs(struct pt_regs *);
+#define arch_has_single_step() (1)
+
/*
- * These are defined as per linux/ptrace.h.
+ * kprobe-based event tracer support
*/
-struct task_struct;
+struct pt_regs_offset {
+ const char *name;
+ int offset;
+};
-#define arch_has_single_step() (1)
+#define REG_OFFSET_NAME(r) {.name = #r, .offset = offsetof(struct pt_regs, r)}
+#define REGS_OFFSET_NAME(num) \
+ {.name = __stringify(r##num), .offset = offsetof(struct pt_regs, regs[num])}
+#define TREGS_OFFSET_NAME(num) \
+ {.name = __stringify(tr##num), .offset = offsetof(struct pt_regs, tregs[num])}
+#define REG_OFFSET_END {.name = NULL, .offset = 0}
+
+/* Query offset/name of register from its name/offset */
+extern int regs_query_register_offset(const char *name);
+extern const char *regs_query_register_name(unsigned int offset);
+
+extern const struct pt_regs_offset regoffset_table[];
+
+/**
+ * regs_get_register() - get register value from its offset
+ * @regs: pt_regs from which register value is gotten.
+ * @offset: offset number of the register.
+ *
+ * regs_get_register returns the value of a register. The @offset is the
+ * offset of the register in struct pt_regs address which specified by @regs.
+ * If @offset is bigger than MAX_REG_OFFSET, this returns 0.
+ */
+static inline unsigned long regs_get_register(struct pt_regs *regs,
+ unsigned int offset)
+{
+ if (unlikely(offset > MAX_REG_OFFSET))
+ return 0;
+ return *(unsigned long *)((unsigned long)regs + offset);
+}
+
+/**
+ * regs_within_kernel_stack() - check the address in the stack
+ * @regs: pt_regs which contains kernel stack pointer.
+ * @addr: address which is checked.
+ *
+ * regs_within_kernel_stack() checks @addr is within the kernel stack page(s).
+ * If @addr is within the kernel stack, it returns true. If not, returns false.
+ */
+static inline int regs_within_kernel_stack(struct pt_regs *regs,
+ unsigned long addr)
+{
+ return ((addr & ~(THREAD_SIZE - 1)) ==
+ (kernel_stack_pointer(regs) & ~(THREAD_SIZE - 1)));
+}
+
+/**
+ * regs_get_kernel_stack_nth() - get Nth entry of the stack
+ * @regs: pt_regs which contains kernel stack pointer.
+ * @n: stack entry number.
+ *
+ * regs_get_kernel_stack_nth() returns @n th entry of the kernel stack which
+ * is specified by @regs. If the @n th entry is NOT in the kernel stack,
+ * this returns 0.
+ */
+static inline unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs,
+ unsigned int n)
+{
+ unsigned long *addr = (unsigned long *)kernel_stack_pointer(regs);
+ addr += n;
+ if (regs_within_kernel_stack(regs, (unsigned long)addr))
+ return *addr;
+ else
+ return 0;
+}
struct perf_event;
struct perf_sample_data;
diff --git a/arch/sh/include/asm/ptrace_32.h b/arch/sh/include/asm/ptrace_32.h
new file mode 100644
index 00000000000..35d9e257558
--- /dev/null
+++ b/arch/sh/include/asm/ptrace_32.h
@@ -0,0 +1,83 @@
+#ifndef __ASM_SH_PTRACE_32_H
+#define __ASM_SH_PTRACE_32_H
+
+/*
+ * GCC defines register number like this:
+ * -----------------------------
+ * 0 - 15 are integer registers
+ * 17 - 22 are control/special registers
+ * 24 - 39 fp registers
+ * 40 - 47 xd registers
+ * 48 - fpscr register
+ * -----------------------------
+ *
+ * We follows above, except:
+ * 16 --- program counter (PC)
+ * 22 --- syscall #
+ * 23 --- floating point communication register
+ */
+#define REG_REG0 0
+#define REG_REG15 15
+
+#define REG_PC 16
+
+#define REG_PR 17
+#define REG_SR 18
+#define REG_GBR 19
+#define REG_MACH 20
+#define REG_MACL 21
+
+#define REG_SYSCALL 22
+
+#define REG_FPREG0 23
+#define REG_FPREG15 38
+#define REG_XFREG0 39
+#define REG_XFREG15 54
+
+#define REG_FPSCR 55
+#define REG_FPUL 56
+
+/*
+ * This struct defines the way the registers are stored on the
+ * kernel stack during a system call or other kernel entry.
+ */
+struct pt_regs {
+ unsigned long regs[16];
+ unsigned long pc;
+ unsigned long pr;
+ unsigned long sr;
+ unsigned long gbr;
+ unsigned long mach;
+ unsigned long macl;
+ long tra;
+};
+
+/*
+ * This struct defines the way the DSP registers are stored on the
+ * kernel stack during a system call or other kernel entry.
+ */
+struct pt_dspregs {
+ unsigned long a1;
+ unsigned long a0g;
+ unsigned long a1g;
+ unsigned long m0;
+ unsigned long m1;
+ unsigned long a0;
+ unsigned long x0;
+ unsigned long x1;
+ unsigned long y0;
+ unsigned long y1;
+ unsigned long dsr;
+ unsigned long rs;
+ unsigned long re;
+ unsigned long mod;
+};
+
+#ifdef __KERNEL__
+
+#define MAX_REG_OFFSET offsetof(struct pt_regs, tra)
+#define regs_return_value(regs) ((regs)->regs[0])
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_SH_PTRACE_32_H */
diff --git a/arch/sh/include/asm/ptrace_64.h b/arch/sh/include/asm/ptrace_64.h
new file mode 100644
index 00000000000..d43c1cb0bbe
--- /dev/null
+++ b/arch/sh/include/asm/ptrace_64.h
@@ -0,0 +1,20 @@
+#ifndef __ASM_SH_PTRACE_64_H
+#define __ASM_SH_PTRACE_64_H
+
+struct pt_regs {
+ unsigned long long pc;
+ unsigned long long sr;
+ long long syscall_nr;
+ unsigned long long regs[63];
+ unsigned long long tregs[8];
+ unsigned long long pad[2];
+};
+
+#ifdef __KERNEL__
+
+#define MAX_REG_OFFSET offsetof(struct pt_regs, tregs[7])
+#define regs_return_value(regs) ((regs)->regs[3])
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_SH_PTRACE_64_H */
diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile
index e25f3c69525..1086ba1abda 100644
--- a/arch/sh/kernel/Makefile
+++ b/arch/sh/kernel/Makefile
@@ -14,7 +14,7 @@ CFLAGS_REMOVE_return_address.o = -pg
obj-y := clkdev.o debugtraps.o dma-nommu.o dumpstack.o \
idle.o io.o irq.o \
irq_$(BITS).o machvec.o nmi_debug.o process.o \
- process_$(BITS).o ptrace_$(BITS).o \
+ process_$(BITS).o ptrace.o ptrace_$(BITS).o \
reboot.o return_address.o \
setup.o signal_$(BITS).o sys_sh.o sys_sh$(BITS).o \
syscalls_$(BITS).o time.o topology.o traps.o \
diff --git a/arch/sh/kernel/kprobes.c b/arch/sh/kernel/kprobes.c
index 4049d99f76e..1208b09e95c 100644
--- a/arch/sh/kernel/kprobes.c
+++ b/arch/sh/kernel/kprobes.c
@@ -20,9 +20,9 @@
DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL;
DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
-static struct kprobe saved_current_opcode;
-static struct kprobe saved_next_opcode;
-static struct kprobe saved_next_opcode2;
+static DEFINE_PER_CPU(struct kprobe, saved_current_opcode);
+static DEFINE_PER_CPU(struct kprobe, saved_next_opcode);
+static DEFINE_PER_CPU(struct kprobe, saved_next_opcode2);
#define OPCODE_JMP(x) (((x) & 0xF0FF) == 0x402b)
#define OPCODE_JSR(x) (((x) & 0xF0FF) == 0x400b)
@@ -102,16 +102,21 @@ int __kprobes kprobe_handle_illslot(unsigned long pc)
void __kprobes arch_remove_kprobe(struct kprobe *p)
{
- if (saved_next_opcode.addr != 0x0) {
+ struct kprobe *saved = &__get_cpu_var(saved_next_opcode);
+
+ if (saved->addr) {
arch_disarm_kprobe(p);
- arch_disarm_kprobe(&saved_next_opcode);
- saved_next_opcode.addr = 0x0;
- saved_next_opcode.opcode = 0x0;
-
- if (saved_next_opcode2.addr != 0x0) {
- arch_disarm_kprobe(&saved_next_opcode2);
- saved_next_opcode2.addr = 0x0;
- saved_next_opcode2.opcode = 0x0;
+ arch_disarm_kprobe(saved);
+
+ saved->addr = NULL;
+ saved->opcode = 0;
+
+ saved = &__get_cpu_var(saved_next_opcode2);
+ if (saved->addr) {
+ arch_disarm_kprobe(saved);
+
+ saved->addr = NULL;
+ saved->opcode = 0;
}
}
}
@@ -141,57 +146,59 @@ static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
*/
static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
{
- kprobe_opcode_t *addr = NULL;
- saved_current_opcode.addr = (kprobe_opcode_t *) (regs->pc);
- addr = saved_current_opcode.addr;
+ __get_cpu_var(saved_current_opcode).addr = (kprobe_opcode_t *)regs->pc;
if (p != NULL) {
+ struct kprobe *op1, *op2;
+
arch_disarm_kprobe(p);
+ op1 = &__get_cpu_var(saved_next_opcode);
+ op2 = &__get_cpu_var(saved_next_opcode2);
+
if (OPCODE_JSR(p->opcode) || OPCODE_JMP(p->opcode)) {
unsigned int reg_nr = ((p->opcode >> 8) & 0x000F);
- saved_next_opcode.addr =
- (kprobe_opcode_t *) regs->regs[reg_nr];
+ op1->addr = (kprobe_opcode_t *) regs->regs[reg_nr];
} else if (OPCODE_BRA(p->opcode) || OPCODE_BSR(p->opcode)) {
unsigned long disp = (p->opcode & 0x0FFF);
- saved_next_opcode.addr =
+ op1->addr =
(kprobe_opcode_t *) (regs->pc + 4 + disp * 2);
} else if (OPCODE_BRAF(p->opcode) || OPCODE_BSRF(p->opcode)) {
unsigned int reg_nr = ((p->opcode >> 8) & 0x000F);
- saved_next_opcode.addr =
+ op1->addr =
(kprobe_opcode_t *) (regs->pc + 4 +
regs->regs[reg_nr]);
} else if (OPCODE_RTS(p->opcode)) {
- saved_next_opcode.addr = (kprobe_opcode_t *) regs->pr;
+ op1->addr = (kprobe_opcode_t *) regs->pr;
} else if (OPCODE_BF(p->opcode) || OPCODE_BT(p->opcode)) {
unsigned long disp = (p->opcode & 0x00FF);
/* case 1 */
- saved_next_opcode.addr = p->addr + 1;
+ op1->addr = p->addr + 1;
/* case 2 */
- saved_next_opcode2.addr =
+ op2->addr =
(kprobe_opcode_t *) (regs->pc + 4 + disp * 2);
- saved_next_opcode2.opcode = *(saved_next_opcode2.addr);
- arch_arm_kprobe(&saved_next_opcode2);
+ op2->opcode = *(op2->addr);
+ arch_arm_kprobe(op2);
} else if (OPCODE_BF_S(p->opcode) || OPCODE_BT_S(p->opcode)) {
unsigned long disp = (p->opcode & 0x00FF);
/* case 1 */
- saved_next_opcode.addr = p->addr + 2;
+ op1->addr = p->addr + 2;
/* case 2 */
- saved_next_opcode2.addr =
+ op2->addr =
(kprobe_opcode_t *) (regs->pc + 4 + disp * 2);
- saved_next_opcode2.opcode = *(saved_next_opcode2.addr);
- arch_arm_kprobe(&saved_next_opcode2);
+ op2->opcode = *(op2->addr);
+ arch_arm_kprobe(op2);
} else {
- saved_next_opcode.addr = p->addr + 1;
+ op1->addr = p->addr + 1;
}
- saved_next_opcode.opcode = *(saved_next_opcode.addr);
- arch_arm_kprobe(&saved_next_opcode);
+ op1->opcode = *(op1->addr);
+ arch_arm_kprobe(op1);
}
}
@@ -376,21 +383,23 @@ static int __kprobes post_kprobe_handler(struct pt_regs *regs)
cur->post_handler(cur, regs, 0);
}
- if (saved_next_opcode.addr != 0x0) {
- arch_disarm_kprobe(&saved_next_opcode);
- saved_next_opcode.addr = 0x0;
- saved_next_opcode.opcode = 0x0;
+ p = &__get_cpu_var(saved_next_opcode);
+ if (p->addr) {
+ arch_disarm_kprobe(p);
+ p->addr = NULL;
+ p->opcode = 0;
- addr = saved_current_opcode.addr;
- saved_current_opcode.addr = 0x0;
+ addr = __get_cpu_var(saved_current_opcode).addr;
+ __get_cpu_var(saved_current_opcode).addr = NULL;
p = get_kprobe(addr);
arch_arm_kprobe(p);
- if (saved_next_opcode2.addr != 0x0) {
- arch_disarm_kprobe(&saved_next_opcode2);
- saved_next_opcode2.addr = 0x0;
- saved_next_opcode2.opcode = 0x0;
+ p = &__get_cpu_var(saved_next_opcode2);
+ if (p->addr) {
+ arch_disarm_kprobe(p);
+ p->addr = NULL;
+ p->opcode = 0;
}
}
@@ -572,14 +581,5 @@ static struct kprobe trampoline_p = {
int __init arch_init_kprobes(void)
{
- saved_next_opcode.addr = 0x0;
- saved_next_opcode.opcode = 0x0;
-
- saved_current_opcode.addr = 0x0;
- saved_current_opcode.opcode = 0x0;
-
- saved_next_opcode2.addr = 0x0;
- saved_next_opcode2.opcode = 0x0;
-
return register_kprobe(&trampoline_p);
}
diff --git a/arch/sh/kernel/ptrace.c b/arch/sh/kernel/ptrace.c
new file mode 100644
index 00000000000..0a05983633c
--- /dev/null
+++ b/arch/sh/kernel/ptrace.c
@@ -0,0 +1,33 @@
+#include <linux/ptrace.h>
+
+/**
+ * regs_query_register_offset() - query register offset from its name
+ * @name: the name of a register
+ *
+ * regs_query_register_offset() returns the offset of a register in struct
+ * pt_regs from its name. If the name is invalid, this returns -EINVAL;
+ */
+int regs_query_register_offset(const char *name)
+{
+ const struct pt_regs_offset *roff;
+ for (roff = regoffset_table; roff->name != NULL; roff++)
+ if (!strcmp(roff->name, name))
+ return roff->offset;
+ return -EINVAL;
+}
+
+/**
+ * regs_query_register_name() - query register name from its offset
+ * @offset: the offset of a register in struct pt_regs.
+ *
+ * regs_query_register_name() returns the name of a register from its
+ * offset in struct pt_regs. If the @offset is invalid, this returns NULL;
+ */
+const char *regs_query_register_name(unsigned int offset)
+{
+ const struct pt_regs_offset *roff;
+ for (roff = regoffset_table; roff->name != NULL; roff++)
+ if (roff->offset == offset)
+ return roff->name;
+ return NULL;
+}
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index 6c4bbba2a67..2cd42b58cb2 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -274,6 +274,33 @@ static int dspregs_active(struct task_struct *target,
}
#endif
+const struct pt_regs_offset regoffset_table[] = {
+ REGS_OFFSET_NAME(0),
+ REGS_OFFSET_NAME(1),
+ REGS_OFFSET_NAME(2),
+ REGS_OFFSET_NAME(3),
+ REGS_OFFSET_NAME(4),
+ REGS_OFFSET_NAME(5),
+ REGS_OFFSET_NAME(6),
+ REGS_OFFSET_NAME(7),
+ REGS_OFFSET_NAME(8),
+ REGS_OFFSET_NAME(9),
+ REGS_OFFSET_NAME(10),
+ REGS_OFFSET_NAME(11),
+ REGS_OFFSET_NAME(12),
+ REGS_OFFSET_NAME(13),
+ REGS_OFFSET_NAME(14),
+ REGS_OFFSET_NAME(15),
+ REG_OFFSET_NAME(pc),
+ REG_OFFSET_NAME(pr),
+ REG_OFFSET_NAME(sr),
+ REG_OFFSET_NAME(gbr),
+ REG_OFFSET_NAME(mach),
+ REG_OFFSET_NAME(macl),
+ REG_OFFSET_NAME(tra),
+ REG_OFFSET_END,
+};
+
/*
* These are our native regset flavours.
*/
diff --git a/arch/sh/kernel/ptrace_64.c b/arch/sh/kernel/ptrace_64.c
index 5fd644da7f0..b97817016b6 100644
--- a/arch/sh/kernel/ptrace_64.c
+++ b/arch/sh/kernel/ptrace_64.c
@@ -252,6 +252,85 @@ static int fpregs_active(struct task_struct *target,
}
#endif
+const struct pt_regs_offset regoffset_table[] = {
+ REG_OFFSET_NAME(pc),
+ REG_OFFSET_NAME(sr),
+ REG_OFFSET_NAME(syscall_nr),
+ REGS_OFFSET_NAME(0),
+ REGS_OFFSET_NAME(1),
+ REGS_OFFSET_NAME(2),
+ REGS_OFFSET_NAME(3),
+ REGS_OFFSET_NAME(4),
+ REGS_OFFSET_NAME(5),
+ REGS_OFFSET_NAME(6),
+ REGS_OFFSET_NAME(7),
+ REGS_OFFSET_NAME(8),
+ REGS_OFFSET_NAME(9),
+ REGS_OFFSET_NAME(10),
+ REGS_OFFSET_NAME(11),
+ REGS_OFFSET_NAME(12),
+ REGS_OFFSET_NAME(13),
+ REGS_OFFSET_NAME(14),
+ REGS_OFFSET_NAME(15),
+ REGS_OFFSET_NAME(16),
+ REGS_OFFSET_NAME(17),
+ REGS_OFFSET_NAME(18),
+ REGS_OFFSET_NAME(19),
+ REGS_OFFSET_NAME(20),
+ REGS_OFFSET_NAME(21),
+ REGS_OFFSET_NAME(22),
+ REGS_OFFSET_NAME(23),
+ REGS_OFFSET_NAME(24),
+ REGS_OFFSET_NAME(25),
+ REGS_OFFSET_NAME(26),
+ REGS_OFFSET_NAME(27),
+ REGS_OFFSET_NAME(28),
+ REGS_OFFSET_NAME(29),
+ REGS_OFFSET_NAME(30),
+ REGS_OFFSET_NAME(31),
+ REGS_OFFSET_NAME(32),
+ REGS_OFFSET_NAME(33),
+ REGS_OFFSET_NAME(34),
+ REGS_OFFSET_NAME(35),
+ REGS_OFFSET_NAME(36),
+ REGS_OFFSET_NAME(37),
+ REGS_OFFSET_NAME(38),
+ REGS_OFFSET_NAME(39),
+ REGS_OFFSET_NAME(40),
+ REGS_OFFSET_NAME(41),
+ REGS_OFFSET_NAME(42),
+ REGS_OFFSET_NAME(43),
+ REGS_OFFSET_NAME(44),
+ REGS_OFFSET_NAME(45),
+ REGS_OFFSET_NAME(46),
+ REGS_OFFSET_NAME(47),
+ REGS_OFFSET_NAME(48),
+ REGS_OFFSET_NAME(49),
+ REGS_OFFSET_NAME(50),
+ REGS_OFFSET_NAME(51),
+ REGS_OFFSET_NAME(52),
+ REGS_OFFSET_NAME(53),
+ REGS_OFFSET_NAME(54),
+ REGS_OFFSET_NAME(55),
+ REGS_OFFSET_NAME(56),
+ REGS_OFFSET_NAME(57),
+ REGS_OFFSET_NAME(58),
+ REGS_OFFSET_NAME(59),
+ REGS_OFFSET_NAME(60),
+ REGS_OFFSET_NAME(61),
+ REGS_OFFSET_NAME(62),
+ REGS_OFFSET_NAME(63),
+ TREGS_OFFSET_NAME(0),
+ TREGS_OFFSET_NAME(1),
+ TREGS_OFFSET_NAME(2),
+ TREGS_OFFSET_NAME(3),
+ TREGS_OFFSET_NAME(4),
+ TREGS_OFFSET_NAME(5),
+ TREGS_OFFSET_NAME(6),
+ TREGS_OFFSET_NAME(7),
+ REG_OFFSET_END,
+};
+
/*
* These are our native regset flavours.
*/