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ARM: add support for R_ARM_V4BX

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This commit is contained in:
Daniel Glöckner 2010-05-15 01:23:34 +02:00
parent 20a1cba286
commit 128e46f91b
2 changed files with 11 additions and 1 deletions
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1
elf.h
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@ -1673,6 +1673,7 @@ typedef Elf32_Addr Elf32_Conflict;
#define R_ARM_PLT32 27 /* 32 bit PLT address */
#define R_ARM_CALL 28
#define R_ARM_JUMP24 29
#define R_ARM_V4BX 40
#define R_ARM_PREL31 42
#define R_ARM_GNU_VTENTRY 100
#define R_ARM_GNU_VTINHERIT 101

11
tccelf.c
View File

@ -660,6 +660,11 @@ ST_FUNC void relocate_section(TCCState *s1, Section *s)
break;
case R_ARM_COPY:
break;
case R_ARM_V4BX:
/* trade Thumb support for ARMv4 support */
if ((0x0ffffff0 & *(int*)ptr) == 0x012FFF10)
*(int*)ptr ^= 0xE12FFF10 ^ 0xE1A0F000; /* BX Rm -> MOV PC, Rm */
break;
default:
fprintf(stderr,"FIXME: handle reloc type %x at %lx [%.8x] to %lx\n",
type,addr,(unsigned int)(long)ptr,val);
@ -2474,7 +2479,11 @@ ST_FUNC int tcc_load_object_file(TCCState *s1,
goto invalid_reloc;
sym_index = old_to_new_syms[sym_index];
/* ignore link_once in rel section. */
if (!sym_index && !sm->link_once) {
if (!sym_index && !sm->link_once
#ifdef TCC_TARGET_ARM
&& type != R_ARM_V4BX
#endif
) {
invalid_reloc:
error_noabort("Invalid relocation entry [%2d] '%s' @ %.8x",
i, strsec + sh->sh_name, rel->r_offset);