diff options
Diffstat (limited to 'lib/arm/aeabi_dcmp.S')
| -rw-r--r-- | lib/arm/aeabi_dcmp.S | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/arm/aeabi_dcmp.S b/lib/arm/aeabi_dcmp.S new file mode 100644 index 000000000000..c4d07727a380 --- /dev/null +++ b/lib/arm/aeabi_dcmp.S @@ -0,0 +1,39 @@ +//===-- aeabi_dcmp.S - EABI dcmp* implementation ---------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "../assembly.h" + +// int __aeabi_dcmp{eq,lt,le,ge,gt}(double a, double b) { +// int result = __{eq,lt,le,ge,gt}df2(a, b); +// if (result {==,<,<=,>=,>} 0) { +// return 1; +// } else { +// return 0; +// } +// } + +#define DEFINE_AEABI_DCMP(cond) \ + .syntax unified SEPARATOR \ + .align 2 SEPARATOR \ +DEFINE_COMPILERRT_FUNCTION(__aeabi_dcmp ## cond) \ + push { r4, lr } SEPARATOR \ + bl SYMBOL_NAME(__ ## cond ## df2) SEPARATOR \ + cmp r0, #0 SEPARATOR \ + b ## cond 1f SEPARATOR \ + mov r0, #0 SEPARATOR \ + pop { r4, pc } SEPARATOR \ +1: SEPARATOR \ + mov r0, #1 SEPARATOR \ + pop { r4, pc } + +DEFINE_AEABI_DCMP(eq) +DEFINE_AEABI_DCMP(lt) +DEFINE_AEABI_DCMP(le) +DEFINE_AEABI_DCMP(ge) +DEFINE_AEABI_DCMP(gt) |