diff options
Diffstat (limited to 'lib/builtins/arm/aeabi_cdcmp.S')
| -rw-r--r-- | lib/builtins/arm/aeabi_cdcmp.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/builtins/arm/aeabi_cdcmp.S b/lib/builtins/arm/aeabi_cdcmp.S index 8008f5fca..b67814d9f 100644 --- a/lib/builtins/arm/aeabi_cdcmp.S +++ b/lib/builtins/arm/aeabi_cdcmp.S @@ -30,6 +30,19 @@ DEFINE_COMPILERRT_FUNCTION(__aeabi_cdcmpeq) push {r0-r3, lr} bl __aeabi_cdcmpeq_check_nan cmp r0, #1 +#if __ARM_ARCH_ISA_THUMB == 1 + beq 1f + // NaN has been ruled out, so __aeabi_cdcmple can't trap + mov r0, sp + ldm r0, {r0-r3} + bl __aeabi_cdcmple + pop {r0-r3, pc} +1: + // Z = 0, C = 1 + movs r0, #0xF + lsls r0, r0, #31 + pop {r0-r3, pc} +#else pop {r0-r3, lr} // NaN has been ruled out, so __aeabi_cdcmple can't trap @@ -37,6 +50,7 @@ DEFINE_COMPILERRT_FUNCTION(__aeabi_cdcmpeq) msr CPSR_f, #APSR_C JMP(lr) +#endif END_COMPILERRT_FUNCTION(__aeabi_cdcmpeq) @@ -59,6 +73,28 @@ DEFINE_COMPILERRT_FUNCTION(__aeabi_cdcmple) bl __aeabi_dcmplt cmp r0, #1 +#if __ARM_ARCH_ISA_THUMB == 1 + bne 1f + // Z = 0, C = 0 + movs r0, #1 + lsls r0, r0, #1 + pop {r0-r3, pc} +1: + mov r0, sp + ldm r0, {r0-r3} + bl __aeabi_dcmpeq + cmp r0, #1 + bne 2f + // Z = 1, C = 1 + movs r0, #2 + lsls r0, r0, #31 + pop {r0-r3, pc} +2: + // Z = 0, C = 1 + movs r0, #0xF + lsls r0, r0, #31 + pop {r0-r3, pc} +#else moveq ip, #0 beq 1f @@ -72,6 +108,7 @@ DEFINE_COMPILERRT_FUNCTION(__aeabi_cdcmple) msr CPSR_f, ip pop {r0-r3} POP_PC() +#endif END_COMPILERRT_FUNCTION(__aeabi_cdcmple) // int __aeabi_cdrcmple(double a, double b) { |