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[LIB] lexblock: Show the lexblock low_pc info as offsets from the function where they appear 

__wsum csum_partial_copy_to_user(const void  * src, void * dst, int len, __wsum isum, int * errp);
{ /* low_pc=0xffffffff8128ed37 */
        { /* csum_partial_copy_to_user+0x11 */
                long unsigned int flag;                               //    76
                long unsigned int roksum;                             //    76
                current_thread_info(void); /* size=9, low_pc=0xffffffff8128ed4b */ //    76
        } /* lexblock size=32 */
        { /* csum_partial_copy_to_user+0x49 */
                __u16 val16;                                          //    83
                add32_with_carry(unsigned int a,
                                unsigned int b); /* size=8, low_pc=0xffffffff8128ed83 */ //    84
                { /* csum_partial_copy_to_user+0x54 */
                        int __pu_err;                                 //    86
                } /* lexblock size=5 */
        } /* lexblock size=35 */
}/* size: 149 */
/* definitions: 1 */

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
This commit is contained in:
Arnaldo Carvalho de Melo 2007-07-31 14:00:44 -03:00
parent 86bf6e680b
commit ef45383d22
3 changed files with 25 additions and 12 deletions
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28
dwarves.c
View File

@ -2030,6 +2030,7 @@ print_it:
}
static size_t function__tag_fprintf(const struct tag *tag, const struct cu *cu,
struct function *function,
uint16_t indent, FILE *fp)
{
char bf[512];
@ -2088,7 +2089,7 @@ static size_t function__tag_fprintf(const struct tag *tag, const struct cu *cu,
}
break;
case DW_TAG_lexical_block:
printed = lexblock__fprintf(vtag, cu, indent, fp);
printed = lexblock__fprintf(vtag, cu, function, indent, fp);
fputc('\n', fp);
return printed + 1;
default:
@ -2105,7 +2106,7 @@ static size_t function__tag_fprintf(const struct tag *tag, const struct cu *cu,
}
size_t lexblock__fprintf(const struct lexblock *self, const struct cu *cu,
uint16_t indent, FILE *fp)
struct function *function, uint16_t indent, FILE *fp)
{
struct tag *pos;
size_t printed;
@ -2113,14 +2114,25 @@ size_t lexblock__fprintf(const struct lexblock *self, const struct cu *cu,
if (indent >= sizeof(tabs))
indent = sizeof(tabs) - 1;
printed = fprintf(fp, "%.*s{", indent, tabs);
if (self->low_pc != 0)
printed += fprintf(fp, " /* low_pc=%#llx */", self->low_pc);
if (self->low_pc != 0) {
Dwarf_Off offset = self->low_pc - function->lexblock.low_pc;
if (offset == 0)
printed += fprintf(fp, " /* low_pc=%#llx */", self->low_pc);
else
printed += fprintf(fp, " /* %s+%#llx */",
function__name(function, cu),
offset);
}
printed += fprintf(fp, "\n");
list_for_each_entry(pos, &self->tags, node)
printed += function__tag_fprintf(pos, cu, indent + 1, fp);
printed += function__tag_fprintf(pos, cu, function, indent + 1, fp);
printed += fprintf(fp, "%.*s}", indent, tabs);
if (self->high_pc != 0)
printed += fprintf(fp, " /* high_pc=%#llx */", self->high_pc);
if (function->lexblock.low_pc != self->low_pc) {
const size_t size = self->high_pc - self->low_pc;
printed += fprintf(fp, " /* lexblock size=%zd */", size);
}
return printed;
}
@ -2166,7 +2178,7 @@ size_t function__fprintf_stats(const struct tag *tag_self,
const struct cu *cu, FILE *fp)
{
struct function *self = tag__function(tag_self);
size_t printed = lexblock__fprintf(&self->lexblock, cu, 0, fp);
size_t printed = lexblock__fprintf(&self->lexblock, cu, self, 0, fp);
printed += fprintf(fp, "/* size: %zd", function__size(self));
if (self->lexblock.nr_variables > 0)

5
dwarves.h
View File

@ -448,10 +448,11 @@ extern size_t tag__fprintf(struct tag *self, const struct cu *cu,
extern const char *function__name(struct function *self, const struct cu *cu);
extern size_t function__fprintf_stats(const struct tag *tag_self,
const struct cu *cu, FILE *fp);
const struct cu *cu,
FILE *fp);
extern size_t lexblock__fprintf(const struct lexblock *self,
const struct cu *cu,
const struct cu *cu, struct function *function,
uint16_t indent, FILE *fp);
extern struct cus *cus__new(struct list_head *definitions,

4
pdwtags.c
View File

@ -35,9 +35,9 @@ static int emit_tag(struct tag *self, struct cu *cu, void *cookie __unused)
tag__fprintf(self, cu, &conf, stdout);
if (self->tag == DW_TAG_subprogram) {
const struct function *fn = tag__function(self);
struct function *fn = tag__function(self);
putchar('\n');
lexblock__fprintf(&fn->lexblock, cu, 0, stdout);
lexblock__fprintf(&fn->lexblock, cu, fn, 0, stdout);
}
puts("\n");
}