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Generate PLT thumb stub only when necessary

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Generate PLT thumb stub for an ARM PLT entry only when at least one
Thumb instruction branches to that entry. This is a rewrite of the
previous patch.
This commit is contained in:
Thomas Preud'homme
2012-11-04 00:40:05 +01:00
parent ab24aaeca3
commit e2212738d4
2 changed files with 51 additions and 28 deletions
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13
tcc.h
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@ -492,6 +492,13 @@ typedef struct ASMOperand {
} ASMOperand;
#endif
struct sym_attr {
unsigned long got_offset;
#ifdef TCC_TARGET_ARM
unsigned char plt_thumb_stub:1;
#endif
};
struct TCCState {
unsigned output_type : 8;
unsigned reloc_output : 1;
@ -524,11 +531,11 @@ struct TCCState {
Section **priv_sections;
int nb_priv_sections; /* number of private sections */
/* got handling */
/* got & plt handling */
Section *got;
Section *plt;
unsigned long *got_offsets;
int nb_got_offsets;
struct sym_attr *sym_attrs;
int nb_sym_attrs;
/* give the correspondance from symtab indexes to dynsym indexes */
int *symtab_to_dynsym;