diff options
Diffstat (limited to 'libgcc')
| -rw-r--r-- | libgcc/ChangeLog | 9 | ||||
| -rw-r--r-- | libgcc/config/arm/bpabi-v6m.S | 8 | ||||
| -rw-r--r-- | libgcc/config/arm/bpabi.S | 36 |
3 files changed, 35 insertions, 18 deletions
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog index 0bff7ef..e05ba78 100644 --- a/libgcc/ChangeLog +++ b/libgcc/ChangeLog @@ -1,3 +1,12 @@ +2015-02-17 Sandra Loosemore <sandra@codesourcery.com> + + * config/arm/bpabi.S (test_div_by_zero): Make label names + consistent between thumb2 and arm mode cases. Separate the + signed comparison on the high word of the numerator from the + unsigned comparison on the low word. + * config/arm/bpabi-v6m.S (test_div_by_zero): Similarly separate + signed comparison. + 2015-02-17 Joseph Myers <joseph@codesourcery.com> * config/nvptx/realloc.c: Include <stddef.h> instead of <stdlib.h> diff --git a/libgcc/config/arm/bpabi-v6m.S b/libgcc/config/arm/bpabi-v6m.S index 0a32893..a1e1640 100644 --- a/libgcc/config/arm/bpabi-v6m.S +++ b/libgcc/config/arm/bpabi-v6m.S @@ -85,19 +85,21 @@ FUNC_START aeabi_ulcmp cmp yyl, #0 bne 7f cmp xxh, #0 + .ifc \signed, unsigned bne 2f cmp xxl, #0 2: - .ifc \signed, unsigned beq 3f mov xxh, #0 mvn xxh, xxh @ 0xffffffff mov xxl, xxh 3: .else - beq 5f blt 6f - mov xxl, #0 + bgt 4f + cmp xxl, #0 + beq 5f +4: mov xxl, #0 mvn xxl, xxl @ 0xffffffff lsr xxh, xxl, #1 @ 0x7fffffff b 5f diff --git a/libgcc/config/arm/bpabi.S b/libgcc/config/arm/bpabi.S index 4cb3d17..f2d990d 100644 --- a/libgcc/config/arm/bpabi.S +++ b/libgcc/config/arm/bpabi.S @@ -80,26 +80,29 @@ ARM_FUNC_START aeabi_ulcmp /* Tail-call to divide-by-zero handlers which may be overridden by the user, so unwinding works properly. */ #if defined(__thumb2__) - cbnz yyh, 1f - cbnz yyl, 1f + cbnz yyh, 2f + cbnz yyl, 2f cmp xxh, #0 + .ifc \signed, unsigned do_it eq cmpeq xxl, #0 - .ifc \signed, unsigned - beq 2f - mov xxh, #0xffffffff - mov xxl, xxh -2: + do_it ne, t + movne xxh, #0xffffffff + movne xxl, #0xffffffff .else - do_it lt, t + do_it lt, tt movlt xxl, #0 movlt xxh, #0x80000000 - do_it gt, t - movgt xxh, #0x7fffffff - movgt xxl, #0xffffffff + blt 1f + do_it eq + cmpeq xxl, #0 + do_it ne, t + movne xxh, #0x7fffffff + movne xxl, #0xffffffff .endif +1: b SYM (__aeabi_ldiv0) __PLT__ -1: +2: #else /* Note: Thumb-1 code calls via an ARM shim on processors which support ARM mode. */ @@ -107,16 +110,19 @@ ARM_FUNC_START aeabi_ulcmp cmpeq yyl, #0 bne 2f cmp xxh, #0 - cmpeq xxl, #0 .ifc \signed, unsigned + cmpeq xxl, #0 movne xxh, #0xffffffff movne xxl, #0xffffffff .else movlt xxh, #0x80000000 movlt xxl, #0 - movgt xxh, #0x7fffffff - movgt xxl, #0xffffffff + blt 1f + cmpeq xxl, #0 + movne xxh, #0x7fffffff + movne xxl, #0xffffffff .endif +1: b SYM (__aeabi_ldiv0) __PLT__ 2: #endif |