mirror of
git://git.yoctoproject.org/linux-yocto.git
synced 2025-08-21 16:31:14 +02:00
1b4406d2a8
Use the raw instruction code and macros to identify memory instructions, extract register fields and also offset. The implementation addresses the D-form, X-form, DS-form instructions. Adds "mem_ref" field to check whether source/target has memory reference. Add function "get_powerpc_regs" which will set these fields: reg1, reg2, offset depending of where it is source or target ops. Update "parse" callback for "struct ins_ops" to also pass "struct disasm_line" as argument. This is needed in parse functions where opcode is used to determine whether to set multi_regs and other fields Reviewed-by: Kajol Jain <kjain@linux.ibm.com> Reviewed-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Tested-by: Kajol Jain <kjain@linux.ibm.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Akanksha J N <akanksha@linux.ibm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Disha Goel <disgoel@linux.vnet.ibm.com> Cc: Hari Bathini <hbathini@linux.ibm.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Segher Boessenkool <segher@kernel.crashing.org> Link: https://lore.kernel.org/lkml/20240718084358.72242-7-atrajeev@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
124 lines
2.6 KiB
C
124 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/compiler.h>
|
|
#include <sys/types.h>
|
|
#include <regex.h>
|
|
#include <stdlib.h>
|
|
|
|
struct arm64_annotate {
|
|
regex_t call_insn,
|
|
jump_insn;
|
|
};
|
|
|
|
static int arm64_mov__parse(struct arch *arch __maybe_unused,
|
|
struct ins_operands *ops,
|
|
struct map_symbol *ms __maybe_unused,
|
|
struct disasm_line *dl __maybe_unused)
|
|
{
|
|
char *s = strchr(ops->raw, ','), *target, *endptr;
|
|
|
|
if (s == NULL)
|
|
return -1;
|
|
|
|
*s = '\0';
|
|
ops->source.raw = strdup(ops->raw);
|
|
*s = ',';
|
|
|
|
if (ops->source.raw == NULL)
|
|
return -1;
|
|
|
|
target = ++s;
|
|
ops->target.raw = strdup(target);
|
|
if (ops->target.raw == NULL)
|
|
goto out_free_source;
|
|
|
|
ops->target.addr = strtoull(target, &endptr, 16);
|
|
if (endptr == target)
|
|
goto out_free_target;
|
|
|
|
s = strchr(endptr, '<');
|
|
if (s == NULL)
|
|
goto out_free_target;
|
|
endptr = strchr(s + 1, '>');
|
|
if (endptr == NULL)
|
|
goto out_free_target;
|
|
|
|
*endptr = '\0';
|
|
*s = ' ';
|
|
ops->target.name = strdup(s);
|
|
*s = '<';
|
|
*endptr = '>';
|
|
if (ops->target.name == NULL)
|
|
goto out_free_target;
|
|
|
|
return 0;
|
|
|
|
out_free_target:
|
|
zfree(&ops->target.raw);
|
|
out_free_source:
|
|
zfree(&ops->source.raw);
|
|
return -1;
|
|
}
|
|
|
|
static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
|
|
struct ins_operands *ops, int max_ins_name);
|
|
|
|
static struct ins_ops arm64_mov_ops = {
|
|
.parse = arm64_mov__parse,
|
|
.scnprintf = mov__scnprintf,
|
|
};
|
|
|
|
static struct ins_ops *arm64__associate_instruction_ops(struct arch *arch, const char *name)
|
|
{
|
|
struct arm64_annotate *arm = arch->priv;
|
|
struct ins_ops *ops;
|
|
regmatch_t match[2];
|
|
|
|
if (!regexec(&arm->jump_insn, name, 2, match, 0))
|
|
ops = &jump_ops;
|
|
else if (!regexec(&arm->call_insn, name, 2, match, 0))
|
|
ops = &call_ops;
|
|
else if (!strcmp(name, "ret"))
|
|
ops = &ret_ops;
|
|
else
|
|
ops = &arm64_mov_ops;
|
|
|
|
arch__associate_ins_ops(arch, name, ops);
|
|
return ops;
|
|
}
|
|
|
|
static int arm64__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
|
|
{
|
|
struct arm64_annotate *arm;
|
|
int err;
|
|
|
|
if (arch->initialized)
|
|
return 0;
|
|
|
|
arm = zalloc(sizeof(*arm));
|
|
if (!arm)
|
|
return ENOMEM;
|
|
|
|
/* bl, blr */
|
|
err = regcomp(&arm->call_insn, "^blr?$", REG_EXTENDED);
|
|
if (err)
|
|
goto out_free_arm;
|
|
/* b, b.cond, br, cbz/cbnz, tbz/tbnz */
|
|
err = regcomp(&arm->jump_insn, "^[ct]?br?\\.?(cc|cs|eq|ge|gt|hi|hs|le|lo|ls|lt|mi|ne|pl|vc|vs)?n?z?$",
|
|
REG_EXTENDED);
|
|
if (err)
|
|
goto out_free_call;
|
|
|
|
arch->initialized = true;
|
|
arch->priv = arm;
|
|
arch->associate_instruction_ops = arm64__associate_instruction_ops;
|
|
arch->objdump.comment_char = '/';
|
|
arch->objdump.skip_functions_char = '+';
|
|
return 0;
|
|
|
|
out_free_call:
|
|
regfree(&arm->call_insn);
|
|
out_free_arm:
|
|
free(arm);
|
|
return SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP;
|
|
}
|