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Fix off by one negative offsets for conditional branches. 

Add a test of this fix.
This commit is contained in:
Nick Clifton 2004-11-12 12:27:05 +00:00
parent 9b098f24af
commit 30e857fcdb
5 changed files with 64 additions and 3 deletions
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5
gas/ChangeLog
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@ -1,3 +1,8 @@
2004-11-12 Nick Clifton <nickc@redhat.com>
* config/tc-mn10300.c (md_relax_table): Fix off by one negative
offsets for conditional branches.
2004-11-11 Bob Wilson <bob.wilson@acm.org>
* config/tc-xtensa.c (MAX_IMMED6): Change value to 65.

6
gas/config/tc-mn10300.c
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@ -57,12 +57,12 @@ const char FLT_CHARS[] = "dD";
const relax_typeS md_relax_table[] = {
/* bCC relaxing */
{0x7f, -0x80, 2, 1},
{0x7fff, -0x8000, 5, 2},
{0x7fff, -0x8000 + 1, 5, 2},
{0x7fffffff, -0x80000000, 7, 0},
/* bCC relaxing (uncommon cases) */
{0x7f, -0x80, 3, 4},
{0x7fff, -0x8000, 6, 5},
{0x7fff, -0x8000 + 1, 6, 5},
{0x7fffffff, -0x80000000, 8, 0},
/* call relaxing */
@ -80,7 +80,7 @@ const relax_typeS md_relax_table[] = {
/* fbCC relaxing */
{0x7f, -0x80, 3, 14},
{0x7fff, -0x8000, 6, 15},
{0x7fff, -0x8000 + 1, 6, 15},
{0x7fffffff, -0x80000000, 8, 0},
};

7
gas/testsuite/ChangeLog
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@ -1,3 +1,10 @@
2004-11-12 Nick Clifton <nickc@redhat.com>
* gas/mn10300/basic.exp: Add relax test.
* gas/mn10300/relax.s: New test.
* gas/mn10300/relax.d: Expected results. Make sure that the
correct size of instruction has been selected.
2004-11-11 Bob Wilson <bob.wilson@acm.org>
* gas/xtensa/short_branch_offset.s: New.

17
gas/testsuite/gas/mn10300/relax.d Normal file
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@ -0,0 +1,17 @@
#objdump: -r
#name: Relaxation of conditional branches
.*: +file format.*elf32-[am33lin|mn10300].*
RELOCATION RECORDS FOR \[.rlcb\]:
OFFSET TYPE VALUE
0+8003 R_MN10300_PCREL8 .L0._0\+0x00000001
0+8005 R_MN10300_PCREL32 .L2\+0x00000001
RELOCATION RECORDS FOR \[.rsflb\]:
OFFSET TYPE VALUE
0+8004 R_MN10300_PCREL8 .L0._1\+0x00000002
0+8006 R_MN10300_PCREL32 .L4\+0x00000001

32
gas/testsuite/gas/mn10300/relax.s Normal file
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@ -0,0 +1,32 @@
.am33_2
.section .rlcb, "ax"
.global relax_long_cond_branch
relax_long_cond_branch:
clr d0
clr d1
.L2:
add d1,d0
inc d1
.fill 32764, 1, 0xcb
cmp 9,d1
ble .L2
rets
.section .rsflb, "ax"
.global relax_long_float_cond_branch
relax_long_float_cond_branch:
clr d0
clr d1
.L4:
add d1,d0
inc d1
.fill 32764, 1, 0xcb
cmp 9,d1
fble .L4
rets