From 08f10d51f90cb7e81348c200db2889300fd07459 Mon Sep 17 00:00:00 2001 From: Nick Clifton Date: Thu, 30 Jun 2011 12:52:58 +0000 Subject: [PATCH] PR gas/12848 * config/tc-arm.c (BAD_RANGE): New error message define. (md_apply_fix): Use it. Fix range check for thumb branch instructions. --- gas/ChangeLog | 7 +++++++ gas/config/tc-arm.c | 44 ++++++++++++++++---------------------------- 2 files changed, 23 insertions(+), 28 deletions(-) diff --git a/gas/ChangeLog b/gas/ChangeLog index 4549318..2bde415 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,10 @@ +2011-06-30 Nick Clifton + + PR gas/12848 + * config/tc-arm.c (BAD_RANGE): New error message define. + (md_apply_fix): Use it. + Fix range check for thumb branch instructions. + 2011-06-29 Richard Sandiford * config/tc-mips.c (append_method): New enum. diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index ae70f69..fca5483 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -724,6 +724,7 @@ struct asm_opcode _("cannot use register index with PC-relative addressing") #define BAD_PC_WRITEBACK \ _("cannot use writeback with PC-relative addressing") +#define BAD_RANGE _("branch out of range") static struct hash_control * arm_ops_hsh; static struct hash_control * arm_cond_hsh; @@ -20944,8 +20945,7 @@ md_apply_fix (fixS * fixP, _("misaligned branch destination")); if ((value & (offsetT)0xfe000000) != (offsetT)0 && (value & (offsetT)0xfe000000) != (offsetT)0xfe000000) - as_bad_where (fixP->fx_file, fixP->fx_line, - _("branch out of range")); + as_bad_where (fixP->fx_file, fixP->fx_line, BAD_RANGE); if (fixP->fx_done || !seg->use_rela_p) { @@ -20981,8 +20981,7 @@ md_apply_fix (fixS * fixP, else { if (value & ~0x7e) - as_bad_where (fixP->fx_file, fixP->fx_line, - _("branch out of range")); + as_bad_where (fixP->fx_file, fixP->fx_line, BAD_RANGE); if (fixP->fx_done || !seg->use_rela_p) { @@ -20995,8 +20994,7 @@ md_apply_fix (fixS * fixP, case BFD_RELOC_THUMB_PCREL_BRANCH9: /* Conditional branch. */ if ((value & ~0xff) && ((value & ~0xff) != ~0xff)) - as_bad_where (fixP->fx_file, fixP->fx_line, - _("branch out of range")); + as_bad_where (fixP->fx_file, fixP->fx_line, BAD_RANGE); if (fixP->fx_done || !seg->use_rela_p) { @@ -21008,8 +21006,7 @@ md_apply_fix (fixS * fixP, case BFD_RELOC_THUMB_PCREL_BRANCH12: /* Unconditional branch. */ if ((value & ~0x7ff) && ((value & ~0x7ff) != ~0x7ff)) - as_bad_where (fixP->fx_file, fixP->fx_line, - _("branch out of range")); + as_bad_where (fixP->fx_file, fixP->fx_line, BAD_RANGE); if (fixP->fx_done || !seg->use_rela_p) { @@ -21029,7 +21026,7 @@ md_apply_fix (fixS * fixP, /* Force a relocation for a branch 20 bits wide. */ fixP->fx_done = 0; } - if ((value & ~0x1fffff) && ((value & ~0x1fffff) != ~0x1fffff)) + if ((value & ~0x1fffff) && ((value & ~0x0fffff) != ~0x0fffff)) as_bad_where (fixP->fx_file, fixP->fx_line, _("conditional branch out of range")); @@ -21054,7 +21051,6 @@ md_apply_fix (fixS * fixP, break; case BFD_RELOC_THUMB_PCREL_BLX: - /* If there is a blx from a thumb state function to another thumb function flip this to a bl and warn about it. */ @@ -21079,7 +21075,6 @@ md_apply_fix (fixS * fixP, goto thumb_bl_common; case BFD_RELOC_THUMB_PCREL_BRANCH23: - /* A bl from Thumb state ISA to an internal ARM state function is converted to a blx. */ if (fixP->fx_addsy @@ -21110,21 +21105,15 @@ md_apply_fix (fixS * fixP, 1 of the base address. */ value = (value + 1) & ~ 1; - if ((value & ~0x3fffff) && ((value & ~0x3fffff) != ~0x3fffff)) - { - if (!(ARM_CPU_HAS_FEATURE (cpu_variant, arm_arch_t2))) - { - as_bad_where (fixP->fx_file, fixP->fx_line, - _("branch out of range")); - } - else if ((value & ~0x1ffffff) - && ((value & ~0x1ffffff) != ~0x1ffffff)) - { - as_bad_where (fixP->fx_file, fixP->fx_line, - _("Thumb2 branch out of range")); - } - } + { + if (!(ARM_CPU_HAS_FEATURE (cpu_variant, arm_arch_t2))) + as_bad_where (fixP->fx_file, fixP->fx_line, BAD_RANGE); + else if ((value & ~0x1ffffff) + && ((value & ~0x1ffffff) != ~0x1ffffff)) + as_bad_where (fixP->fx_file, fixP->fx_line, + _("Thumb2 branch out of range")); + } if (fixP->fx_done || !seg->use_rela_p) encode_thumb2_b_bl_offset (buf, value); @@ -21132,9 +21121,8 @@ md_apply_fix (fixS * fixP, break; case BFD_RELOC_THUMB_PCREL_BRANCH25: - if ((value & ~0x1ffffff) && ((value & ~0x1ffffff) != ~0x1ffffff)) - as_bad_where (fixP->fx_file, fixP->fx_line, - _("branch out of range")); + if ((value & ~0x0ffffff) && ((value & ~0x0ffffff) != ~0x0ffffff)) + as_bad_where (fixP->fx_file, fixP->fx_line, BAD_RANGE); if (fixP->fx_done || !seg->use_rela_p) encode_thumb2_b_bl_offset (buf, value); -- 2.7.4