2014-05-22 Charles Baylis <charles.bay...@linaro.org>
* config/arm/bpabi.S (__aeabi_ldivmod, __aeabi_uldivmod,
push_for_divide, pop_for_divide): Use .cfi_* directives for DWARF
annotations. Fix DWARF information.
---
libgcc/config/arm/bpabi.S | 21 ++++++++++++++++-----
1 file changed, 16 insertions(+), 5 deletions(-)
diff --git a/libgcc/config/arm/bpabi.S b/libgcc/config/arm/bpabi.S
index c044167..959ecb1 100644
--- a/libgcc/config/arm/bpabi.S
+++ b/libgcc/config/arm/bpabi.S
@@ -22,6 +22,8 @@
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
+ .cfi_sections .debug_frame
+
#ifdef __ARM_EABI__
/* Some attributes that are common to all routines in this file. */
/* Tag_ABI_align_needed: This code does not require 8-byte
@@ -145,7 +147,8 @@ ARM_FUNC_START aeabi_ulcmp
sub sp, sp, #8
do_push {sp, lr}
#endif
-98: cfi_push 98b - \fname, 0xe, -0xc, 0x10
+ .cfi_adjust_cfa_offset 16
+ .cfi_offset 14, -12
.endm
/* restore stack */
@@ -158,6 +161,8 @@ ARM_FUNC_START aeabi_ulcmp
add sp, sp, #8
do_pop {r2, r3}
#endif
+ .cfi_restore 14
+ .cfi_adjust_cfa_offset 0
.endm
#ifdef L_aeabi_ldivmod
@@ -171,7 +176,7 @@ ARM_FUNC_START aeabi_ulcmp
r2:r3 remainder
*/
ARM_FUNC_START aeabi_ldivmod
- cfi_start __aeabi_ldivmod, LSYM(Lend_aeabi_ldivmod)
+ .cfi_startproc
test_div_by_zero signed
push_for_divide __aeabi_ldivmod
@@ -181,16 +186,19 @@ ARM_FUNC_START aeabi_ldivmod
blt 2f
/* arguments in (r0:r1), (r2:r3) and *sp */
bl SYM(__udivmoddi4) __PLT__
+ .cfi_remember_state
pop_for_divide
RET
1: /* xxh:xxl is negative */
+ .cfi_restore_state
negs xxl, xxl
sbc xxh, xxh, xxh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */
cmp yyh, #0
blt 3f
/* arguments in (r0:r1), (r2:r3) and *sp */
bl SYM(__udivmoddi4) __PLT__
+ .cfi_remember_state
pop_for_divide
negs xxl, xxl
sbc xxh, xxh, xxh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */
@@ -199,16 +207,19 @@ ARM_FUNC_START aeabi_ldivmod
RET
2: /* only yyh:yyl is negative */
+ .cfi_restore_state
negs yyl, yyl
sbc yyh, yyh, yyh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */
/* arguments in (r0:r1), (r2:r3) and *sp */
bl SYM(__udivmoddi4) __PLT__
+ .cfi_remember_state
pop_for_divide
negs xxl, xxl
sbc xxh, xxh, xxh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */
RET
3: /* both xxh:xxl and yyh:yyl are negative */
+ .cfi_restore_state
negs yyl, yyl
sbc yyh, yyh, yyh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */
/* arguments in (r0:r1), (r2:r3) and *sp */
@@ -218,7 +229,7 @@ ARM_FUNC_START aeabi_ldivmod
sbc yyh, yyh, yyh, lsl #1 /* Thumb-2 has no RSC, so use X - 2X */
RET
- cfi_end LSYM(Lend_aeabi_ldivmod)
+ .cfi_endproc
#endif /* L_aeabi_ldivmod */
@@ -233,7 +244,7 @@ ARM_FUNC_START aeabi_ldivmod
r2:r3 remainder
*/
ARM_FUNC_START aeabi_uldivmod
- cfi_start __aeabi_uldivmod, LSYM(Lend_aeabi_uldivmod)
+ .cfi_startproc
test_div_by_zero unsigned
push_for_divide __aeabi_uldivmod
@@ -241,7 +252,7 @@ ARM_FUNC_START aeabi_uldivmod
bl SYM(__udivmoddi4) __PLT__
pop_for_divide
RET
- cfi_end LSYM(Lend_aeabi_uldivmod)
+ .cfi_endproc
#endif /* L_aeabi_divmod */
--
1.9.1
