diff options
Diffstat (limited to 'gas/config/tc-arm.c')
| -rw-r--r-- | gas/config/tc-arm.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index 8739c26..f1bc1fc 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -6407,12 +6407,34 @@ arm_canonicalize_symbol_name (name) return name; } /* start-sanitize-armelf */ +#ifdef OBJ_ELF +/* Relocations against Thumb function names must be left unadjusted, + so that the linker can use this information to correctly set the + bottom bit of their addresses. The MIPS version of this function + also prevents relocations that are mips-16 specific, but I do not + know why it does this. + + FIXME: + There is one other problem that ought to be addressed here, but + which currently is not: Taking the address of a label (rather + than a function) and then later jumping to that address. Such + address also ought to have their bottom bit set (assuming that + they reside in Thumb code), but at the moment they will not. */ + boolean -arm_fix_adjustable(fixP) - fixS *fixP; +arm_fix_adjustable (fixP) + fixS *fixP; { + if (fixP->fx_addsy == NULL) + return 1; + + if (THUMB_IS_FUNC (fixP->fx_addsy) + && fixP->fx_subsy == NULL) + return 0; + return 1; } +#endif /* OBJ_ELF */ /* end-sanitize-armelf */ boolean |