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| author | Nick Clifton <nickc@redhat.com> | 2015-03-12 15:58:37 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2015-03-12 15:58:37 +0000 |
| commit | 93ef582debb0a179916965a882f4344223569219 (patch) | |
| tree | b48d6097849db2a37cf5664fe18294a81c2c9f78 /gas | |
| parent | 811a659a779fdf93293fe1105d99e9db171a8b68 (diff) | |
| download | gdb-93ef582debb0a179916965a882f4344223569219.zip gdb-93ef582debb0a179916965a882f4344223569219.tar.gz gdb-93ef582debb0a179916965a882f4344223569219.tar.bz2 | |
Fixes a problem generating relocs for thumb function calls to local symbols defined in other sections.
PR gas/17444
* config/tc-arm.h (MD_APPLY_SYM_VALUE): Pass the current segment
to arm_apply_sym_value. Update prototype.
* config/tc-arm.c (arm_apply_sym_value): Add segment argument.
Do not apply the value if the symbol is in a different segment to
the current segment.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 9 | ||||
| -rw-r--r-- | gas/config/tc-arm.c | 14 | ||||
| -rw-r--r-- | gas/config/tc-arm.h | 4 |
3 files changed, 20 insertions, 7 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index d98b8cb..36f0f32 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,12 @@ +2015-03-12 Nick Clifton <nickc@redhat.com> + + PR gas/17444 + * config/tc-arm.h (MD_APPLY_SYM_VALUE): Pass the current segment + to arm_apply_sym_value. Update prototype. + * config/tc-arm.c (arm_apply_sym_value): Add segment argument. + Do not apply the value if the symbol is in a different segment to + the current segment. + 2015-03-11 Alan Modra <amodra@gmail.com> * config/tc-ppc.c (md_assemble): Don't abort on 8 byte insn fixups. diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index 1f15116..e97036a 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -25647,14 +25647,18 @@ arm_convert_symbolic_attribute (const char *name) } -/* Apply sym value for relocations only in the case that - they are for local symbols and you have the respective - architectural feature for blx and simple switches. */ +/* Apply sym value for relocations only in the case that they are for + local symbols in the same segment as the fixup and you have the + respective architectural feature for blx and simple switches. */ int -arm_apply_sym_value (struct fix * fixP) +arm_apply_sym_value (struct fix * fixP, segT this_seg) { if (fixP->fx_addsy && ARM_CPU_HAS_FEATURE (selected_cpu, arm_ext_v5t) + /* PR 17444: If the local symbol is in a different section then a reloc + will always be generated for it, so applying the symbol value now + will result in a double offset being stored in the relocation. */ + && (S_GET_SEGMENT (fixP->fx_addsy) == this_seg) && !S_FORCE_RELOC (fixP->fx_addsy, TRUE)) { switch (fixP->fx_r_type) @@ -25668,7 +25672,7 @@ arm_apply_sym_value (struct fix * fixP) case BFD_RELOC_ARM_PCREL_CALL: case BFD_RELOC_THUMB_PCREL_BLX: if (THUMB_IS_FUNC (fixP->fx_addsy)) - return 1; + return 1; break; default: diff --git a/gas/config/tc-arm.h b/gas/config/tc-arm.h index 91db285..b604f04 100644 --- a/gas/config/tc-arm.h +++ b/gas/config/tc-arm.h @@ -327,7 +327,7 @@ struct arm_segment_info_type #ifdef OBJ_ELF /* Values passed to md_apply_fix don't include the symbol value. */ -# define MD_APPLY_SYM_VALUE(FIX) arm_apply_sym_value (FIX) +# define MD_APPLY_SYM_VALUE(FIX) arm_apply_sym_value (FIX, this_segment) #endif #ifdef OBJ_COFF @@ -372,7 +372,7 @@ void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int); #ifdef OBJ_ELF #define CONVERT_SYMBOLIC_ATTRIBUTE(name) arm_convert_symbolic_attribute (name) extern int arm_convert_symbolic_attribute (const char *); -extern int arm_apply_sym_value (struct fix *); +extern int arm_apply_sym_value (struct fix *, segT); #endif #define tc_comment_chars arm_comment_chars |