# include ARCH specific config
-include $(src-perf)/arch/$(SRCARCH)/Makefile
-ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
- CFLAGS += -DHAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
-endif
-
include $(srctree)/tools/scripts/utilities.mak
ifeq ($(call get-executable,$(FLEX)),)
PERF_HAVE_DWARF_REGS := 1
endif
PERF_HAVE_JITDUMP := 1
-PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
HAVE_KVM_STAT_SUPPORT := 1
#
#include <stddef.h>
#include <string.h>
#include <dwarf-regs.h>
-#include <linux/ptrace.h> /* for struct user_pt_regs */
#include <linux/stringify.h>
-struct pt_regs_dwarfnum {
+struct regs_dwarfnum {
const char *name;
unsigned int dwarfnum;
};
#define GPR_DWARFNUM_NAME(num) \
{.name = __stringify(%x##num), .dwarfnum = num}
#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0}
-#define DWARFNUM2OFFSET(index) \
- (index * sizeof((struct user_pt_regs *)0)->regs[0])
/*
* Reference:
* http://infocenter.arm.com/help/topic/com.arm.doc.ihi0057b/IHI0057B_aadwarf64.pdf
*/
-static const struct pt_regs_dwarfnum regdwarfnum_table[] = {
+static const struct regs_dwarfnum regdwarfnum_table[] = {
GPR_DWARFNUM_NAME(0),
GPR_DWARFNUM_NAME(1),
GPR_DWARFNUM_NAME(2),
*/
const char *get_arch_regstr(unsigned int n)
{
- const struct pt_regs_dwarfnum *roff;
+ const struct regs_dwarfnum *roff;
+
for (roff = regdwarfnum_table; roff->name != NULL; roff++)
if (roff->dwarfnum == n)
return roff->name;
return NULL;
}
-
-int regs_query_register_offset(const char *name)
-{
- const struct pt_regs_dwarfnum *roff;
-
- for (roff = regdwarfnum_table; roff->name != NULL; roff++)
- if (!strcmp(roff->name, name))
- return DWARFNUM2OFFSET(roff->dwarfnum);
- return -EINVAL;
-}
ifndef NO_LIBDW
PERF_HAVE_DWARF_REGS := 1
endif
-PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
PERF_HAVE_JITDUMP := 1
HAVE_KVM_STAT_SUPPORT := 1
n %= 32;
return loongarch_gpr_table[n].name;
}
-
-int regs_query_register_offset(const char *name)
-{
- const struct pt_regs_dwarfnum *roff;
-
- for (roff = loongarch_gpr_table; roff->name != NULL; roff++)
- if (!strcmp(roff->name, name))
- return roff->dwarfnum;
- return -EINVAL;
-}
endif
HAVE_KVM_STAT_SUPPORT := 1
-PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
PERF_HAVE_JITDUMP := 1
#
#include <errno.h>
#include <string.h>
#include <dwarf-regs.h>
-#include <linux/ptrace.h>
#include <linux/kernel.h>
#include <linux/stringify.h>
-struct pt_regs_dwarfnum {
+struct regs_dwarfnum {
const char *name;
unsigned int dwarfnum;
- unsigned int ptregs_offset;
};
#define REG_DWARFNUM_NAME(r, num) \
- {.name = __stringify(%)__stringify(r), .dwarfnum = num, \
- .ptregs_offset = offsetof(struct pt_regs, r)}
+ {.name = __stringify(%)__stringify(r), .dwarfnum = num}
#define GPR_DWARFNUM_NAME(num) \
- {.name = __stringify(%gpr##num), .dwarfnum = num, \
- .ptregs_offset = offsetof(struct pt_regs, gpr[num])}
-#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0, .ptregs_offset = 0}
+ {.name = __stringify(%gpr##num), .dwarfnum = num}
+#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0}
/*
* Reference:
* http://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi-1.9.html
*/
-static const struct pt_regs_dwarfnum regdwarfnum_table[] = {
+static const struct regs_dwarfnum regdwarfnum_table[] = {
GPR_DWARFNUM_NAME(0),
GPR_DWARFNUM_NAME(1),
GPR_DWARFNUM_NAME(2),
*/
const char *get_arch_regstr(unsigned int n)
{
- const struct pt_regs_dwarfnum *roff;
+ const struct regs_dwarfnum *roff;
+
for (roff = regdwarfnum_table; roff->name != NULL; roff++)
if (roff->dwarfnum == n)
return roff->name;
return NULL;
}
-int regs_query_register_offset(const char *name)
-{
- const struct pt_regs_dwarfnum *roff;
- for (roff = regdwarfnum_table; roff->name != NULL; roff++)
- if (!strcmp(roff->name, name))
- return roff->ptregs_offset;
- return -EINVAL;
-}
-
#define PPC_OP(op) (((op) >> 26) & 0x3F)
#define PPC_RA(a) (((a) >> 16) & 0x1f)
#define PPC_RT(t) (((t) >> 21) & 0x1f)
ifndef NO_LIBDW
PERF_HAVE_DWARF_REGS := 1
endif
-PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
PERF_HAVE_JITDUMP := 1
HAVE_KVM_STAT_SUPPORT := 1
#include <string.h> /* for strcmp */
#include <dwarf-regs.h>
-struct pt_regs_dwarfnum {
+struct regs_dwarfnum {
const char *name;
unsigned int dwarfnum;
};
#define REG_DWARFNUM_NAME(r, num) {.name = r, .dwarfnum = num}
#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0}
-struct pt_regs_dwarfnum riscv_dwarf_regs_table[] = {
+struct regs_dwarfnum riscv_dwarf_regs_table[] = {
REG_DWARFNUM_NAME("%zero", 0),
REG_DWARFNUM_NAME("%ra", 1),
REG_DWARFNUM_NAME("%sp", 2),
{
return (n < RISCV_MAX_REGS) ? riscv_dwarf_regs_table[n].name : NULL;
}
-
-int regs_query_register_offset(const char *name)
-{
- const struct pt_regs_dwarfnum *roff;
-
- for (roff = riscv_dwarf_regs_table; roff->name; roff++)
- if (!strcmp(roff->name, name))
- return roff->dwarfnum;
- return -EINVAL;
-}
PERF_HAVE_DWARF_REGS := 1
endif
HAVE_KVM_STAT_SUPPORT := 1
-PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
PERF_HAVE_JITDUMP := 1
#
*
*/
-#include <errno.h>
-#include <stddef.h>
-#include <stdlib.h>
#include <linux/kernel.h>
-#include <asm/ptrace.h>
-#include <string.h>
-#include <dwarf-regs.h>
#include "dwarf-regs-table.h"
const char *get_arch_regstr(unsigned int n)
{
return (n >= ARRAY_SIZE(s390_dwarf_regs)) ? NULL : s390_dwarf_regs[n];
}
-
-/*
- * Convert the register name into an offset to struct pt_regs (kernel).
- * This is required by the BPF prologue generator. The BPF
- * program is called in the BPF overflow handler in the perf
- * core.
- */
-int regs_query_register_offset(const char *name)
-{
- unsigned long gpr;
-
- if (!name || strncmp(name, "%r", 2))
- return -EINVAL;
-
- errno = 0;
- gpr = strtoul(name + 2, NULL, 10);
- if (errno || gpr >= 16)
- return -EINVAL;
-
- return offsetof(user_pt_regs, gprs) + 8 * gpr;
-}
PERF_HAVE_DWARF_REGS := 1
endif
HAVE_KVM_STAT_SUPPORT := 1
-PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
PERF_HAVE_JITDUMP := 1
###
* Written by Masami Hiramatsu <mhiramat@redhat.com>
*/
-#include <stddef.h>
#include <errno.h> /* for EINVAL */
#include <string.h> /* for strcmp */
-#include <linux/ptrace.h> /* for struct pt_regs */
-#include <linux/kernel.h> /* for offsetof */
+#include <linux/kernel.h> /* for ARRAY_SIZE */
#include <dwarf-regs.h>
-/*
- * See arch/x86/kernel/ptrace.c.
- * Different from it:
- *
- * - Since struct pt_regs is defined differently for user and kernel,
- * but we want to use 'ax, bx' instead of 'rax, rbx' (which is struct
- * field name of user's pt_regs), we make REG_OFFSET_NAME to accept
- * both string name and reg field name.
- *
- * - Since accessing x86_32's pt_regs from x86_64 building is difficult
- * and vise versa, we simply fill offset with -1, so
- * get_arch_regstr() still works but regs_query_register_offset()
- * returns error.
- * The only inconvenience caused by it now is that we are not allowed
- * to generate BPF prologue for a x86_64 kernel if perf is built for
- * x86_32. This is really a rare usecase.
- *
- * - Order is different from kernel's ptrace.c for get_arch_regstr(). Use
- * the order defined by dwarf.
- */
+#define DEFINE_DWARF_REGSTR_TABLE 1
+#include "dwarf-regs-table.h"
-struct pt_regs_offset {
- const char *name;
- int offset;
-};
-
-#define REG_OFFSET_END {.name = NULL, .offset = 0}
-
-#ifdef __x86_64__
-# define REG_OFFSET_NAME_64(n, r) {.name = n, .offset = offsetof(struct pt_regs, r)}
-# define REG_OFFSET_NAME_32(n, r) {.name = n, .offset = -1}
+/* Return architecture dependent register string (for kprobe-tracer) */
+const char *get_arch_regstr(unsigned int n)
+{
+#if defined(__i386__)
+ size_t len = ARRAY_SIZE(x86_32_regstr_tbl);
#else
-# define REG_OFFSET_NAME_64(n, r) {.name = n, .offset = -1}
-# define REG_OFFSET_NAME_32(n, r) {.name = n, .offset = offsetof(struct pt_regs, r)}
+ size_t len = ARRAY_SIZE(x86_64_regstr_tbl);
#endif
-/* TODO: switching by dwarf address size */
-#ifndef __x86_64__
-static const struct pt_regs_offset x86_32_regoffset_table[] = {
- REG_OFFSET_NAME_32("%ax", eax),
- REG_OFFSET_NAME_32("%cx", ecx),
- REG_OFFSET_NAME_32("%dx", edx),
- REG_OFFSET_NAME_32("%bx", ebx),
- REG_OFFSET_NAME_32("$stack", esp), /* Stack address instead of %sp */
- REG_OFFSET_NAME_32("%bp", ebp),
- REG_OFFSET_NAME_32("%si", esi),
- REG_OFFSET_NAME_32("%di", edi),
- REG_OFFSET_END,
-};
+ if (n >= len)
+ return NULL;
-#define regoffset_table x86_32_regoffset_table
+#if defined(__i386__)
+ return x86_32_regstr_tbl[n];
#else
-static const struct pt_regs_offset x86_64_regoffset_table[] = {
- REG_OFFSET_NAME_64("%ax", rax),
- REG_OFFSET_NAME_64("%dx", rdx),
- REG_OFFSET_NAME_64("%cx", rcx),
- REG_OFFSET_NAME_64("%bx", rbx),
- REG_OFFSET_NAME_64("%si", rsi),
- REG_OFFSET_NAME_64("%di", rdi),
- REG_OFFSET_NAME_64("%bp", rbp),
- REG_OFFSET_NAME_64("%sp", rsp),
- REG_OFFSET_NAME_64("%r8", r8),
- REG_OFFSET_NAME_64("%r9", r9),
- REG_OFFSET_NAME_64("%r10", r10),
- REG_OFFSET_NAME_64("%r11", r11),
- REG_OFFSET_NAME_64("%r12", r12),
- REG_OFFSET_NAME_64("%r13", r13),
- REG_OFFSET_NAME_64("%r14", r14),
- REG_OFFSET_NAME_64("%r15", r15),
- REG_OFFSET_END,
-};
-
-#define regoffset_table x86_64_regoffset_table
+ return x86_64_regstr_tbl[n];
#endif
-
-/* Minus 1 for the ending REG_OFFSET_END */
-#define ARCH_MAX_REGS ((sizeof(regoffset_table) / sizeof(regoffset_table[0])) - 1)
-
-/* Return architecture dependent register string (for kprobe-tracer) */
-const char *get_arch_regstr(unsigned int n)
-{
- return (n < ARCH_MAX_REGS) ? regoffset_table[n].name : NULL;
-}
-
-/* Reuse code from arch/x86/kernel/ptrace.c */
-/**
- * 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;
}
struct dwarf_regs_idx {
void get_powerpc_regs(u32 raw_insn, int is_source, struct annotated_op_loc *op_loc);
#endif
-#ifdef HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
-/*
- * Arch should support fetching the offset of a register in pt_regs
- * by its name. See kernel's regs_query_register_offset in
- * arch/xxx/kernel/ptrace.c.
- */
-int regs_query_register_offset(const char *name);
-#endif
#endif
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