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perf tools powerpc: Add support for generating bpf prologue

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Generalize existing macros to serve the purpose.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ian Munsie <imunsie@au1.ibm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/1462461799-17518-1-git-send-email-naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Naveen N. Rao 2016-05-05 20:53:19 +05:30 committed by Arnaldo Carvalho de Melo
parent 03548ebf6d
commit 4679bccaa3
2 changed files with 29 additions and 12 deletions
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1
tools/perf/arch/powerpc/Makefile
View File

@ -3,4 +3,5 @@ PERF_HAVE_DWARF_REGS := 1
endif endif
HAVE_KVM_STAT_SUPPORT := 1 HAVE_KVM_STAT_SUPPORT := 1
PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
PERF_HAVE_JITDUMP := 1 PERF_HAVE_JITDUMP := 1

40
tools/perf/arch/powerpc/util/dwarf-regs.c
View File

@ -10,19 +10,26 @@
*/ */
#include <stddef.h> #include <stddef.h>
#include <errno.h>
#include <string.h>
#include <dwarf-regs.h> #include <dwarf-regs.h>
#include <linux/ptrace.h>
#include <linux/kernel.h>
#include "util.h"
struct pt_regs_dwarfnum { struct pt_regs_dwarfnum {
const char *name; const char *name;
unsigned int dwarfnum; unsigned int dwarfnum;
unsigned int ptregs_offset;
}; };
#define STR(s) #s #define REG_DWARFNUM_NAME(r, num) \
#define REG_DWARFNUM_NAME(r, num) {.name = r, .dwarfnum = num} {.name = STR(%)STR(r), .dwarfnum = num, \
#define GPR_DWARFNUM_NAME(num) \ .ptregs_offset = offsetof(struct pt_regs, r)}
{.name = STR(%gpr##num), .dwarfnum = num} #define GPR_DWARFNUM_NAME(num) \
#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0} {.name = STR(%gpr##num), .dwarfnum = num, \
.ptregs_offset = offsetof(struct pt_regs, gpr[num])}
#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0, .ptregs_offset = 0}
/* /*
* Reference: * Reference:
@ -61,12 +68,12 @@ static const struct pt_regs_dwarfnum regdwarfnum_table[] = {
GPR_DWARFNUM_NAME(29), GPR_DWARFNUM_NAME(29),
GPR_DWARFNUM_NAME(30), GPR_DWARFNUM_NAME(30),
GPR_DWARFNUM_NAME(31), GPR_DWARFNUM_NAME(31),
REG_DWARFNUM_NAME("%msr", 66), REG_DWARFNUM_NAME(msr, 66),
REG_DWARFNUM_NAME("%ctr", 109), REG_DWARFNUM_NAME(ctr, 109),
REG_DWARFNUM_NAME("%link", 108), REG_DWARFNUM_NAME(link, 108),
REG_DWARFNUM_NAME("%xer", 101), REG_DWARFNUM_NAME(xer, 101),
REG_DWARFNUM_NAME("%dar", 119), REG_DWARFNUM_NAME(dar, 119),
REG_DWARFNUM_NAME("%dsisr", 118), REG_DWARFNUM_NAME(dsisr, 118),
REG_DWARFNUM_END, REG_DWARFNUM_END,
}; };
@ -86,3 +93,12 @@ const char *get_arch_regstr(unsigned int n)
return roff->name; return roff->name;
return NULL; 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;
}