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| author | Paul Brook <paul@codesourcery.com> | 2011-05-31 13:40:04 +0000 |
|---|---|---|
| committer | Paul Brook <paul@codesourcery.com> | 2011-05-31 13:40:04 +0000 |
| commit | 6e7ce2cdd34f7e3ad720e1d43a19635d79ce17b4 (patch) | |
| tree | d8a159765825d07d54e8c5480dff705e6d356b1f /gas | |
| parent | 12352d3f854285aaaecf6bc89df80e6247968a63 (diff) | |
| download | gdb-6e7ce2cdd34f7e3ad720e1d43a19635d79ce17b4.zip gdb-6e7ce2cdd34f7e3ad720e1d43a19635d79ce17b4.tar.gz gdb-6e7ce2cdd34f7e3ad720e1d43a19635d79ce17b4.tar.bz2 | |
2011-05-31 Paul Brook <paul@codesourcery.com>
Nathan Sidwell <nathan@codesourcery.com>
gas/
* config/tc-arm.c (fix_new_arm): Create an absolute symbol for
pc-relative fixes to constants.
* config/tc-arm.h (TC_FORCE_RELOCATATION_ABS): Define.
ld/testsuite/
* ld-arm/abs-call-1.d: New.
* ld-arm/abs-call-1.s: New.
* ld-arm/arm-elf.exp: Add it.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 7 | ||||
| -rw-r--r-- | gas/config/tc-arm.c | 23 | ||||
| -rw-r--r-- | gas/config/tc-arm.h | 6 |
3 files changed, 36 insertions, 0 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index cd4546c..456f14a 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,10 @@ +2011-05-31 Paul Brook <paul@codesourcery.com> + Nathan Sidwell <nathan@codesourcery.com> + + * config/tc-arm.c (fix_new_arm): Create an absolute symbol for + pc-relative fixes to constants. + * config/tc-arm.h (TC_FORCE_RELOCATATION_ABS): Define. + 2011-05-27 Nick Clifton <nickc@redhat.com> * config/tc-s390.c (md_begin): Remove unused variable dup_insn. diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index a9839cd..375ff82 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -15434,6 +15434,29 @@ fix_new_arm (fragS * frag, switch (exp->X_op) { case O_constant: + if (pc_rel) + { + /* Create an absolute valued symbol, so we have something to + refer to in the object file. Unfortunately for us, gas's + generic expression parsing will already have folded out + any use of .set foo/.type foo %function that may have + been used to set type information of the target location, + that's being specified symbolically. We have to presume + the user knows what they are doing. */ + char name[16 + 8]; + symbolS *symbol; + + sprintf (name, "*ABS*0x%lx", (unsigned long)exp->X_add_number); + + symbol = symbol_find_or_make (name); + S_SET_SEGMENT (symbol, absolute_section); + symbol_set_frag (symbol, &zero_address_frag); + S_SET_VALUE (symbol, exp->X_add_number); + exp->X_op = O_symbol; + exp->X_add_symbol = symbol; + exp->X_add_number = 0; + } + /* FALLTHROUGH */ case O_symbol: case O_add: case O_subtract: diff --git a/gas/config/tc-arm.h b/gas/config/tc-arm.h index 702e405..2916ae1 100644 --- a/gas/config/tc-arm.h +++ b/gas/config/tc-arm.h @@ -192,6 +192,12 @@ void arm_copy_symbol_attributes (symbolS *, symbolS *); (THUMB_IS_FUNC ((FIX)->fx_addsy) \ || !SEG_NORMAL (SEG)) +#define TC_FORCE_RELOCATION_ABS(FIX) \ + (((FIX)->fx_pcrel \ + && (FIX)->fx_r_type != BFD_RELOC_32 \ + && (FIX)->fx_r_type != BFD_RELOC_ARM_GOT32) \ + || TC_FORCE_RELOCATION(FIX)) + #define TC_CONS_FIX_NEW cons_fix_new_arm #define MAX_MEM_ALIGNMENT_BYTES 6 |