diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/build.ninja | 3 | ||||
| -rw-r--r-- | arch/x64/linux/math/abs.S | 35 |
2 files changed, 37 insertions, 1 deletions
diff --git a/arch/build.ninja b/arch/build.ninja index 42ee8f6..eff2eb9 100644 --- a/arch/build.ninja +++ b/arch/build.ninja @@ -4,6 +4,7 @@ rule gas rule archive command = ar rcs $out $in +build abs.o: gas x64/linux/math/abs.S build syscall.o: gas x64/linux/syscall.S -build tanya.a: archive syscall.o +build tanya.a: archive syscall.o abs.o diff --git a/arch/x64/linux/math/abs.S b/arch/x64/linux/math/abs.S new file mode 100644 index 0000000..edf8ac9 --- /dev/null +++ b/arch/x64/linux/math/abs.S @@ -0,0 +1,35 @@ + .text + + +// fabsf. + .globl _D5tanya4math8nbtheory10__T3absTfZ3absFNaNbNiNffZf + .type _D5tanya4math8nbtheory10__T3absTfZ3absFNaNbNiNffZf, @function + +_D5tanya4math8nbtheory10__T3absTfZ3absFNaNbNiNffZf: + mov $0x7fffffff, %eax + movq %rax, %xmm1 + andpd %xmm1, %xmm0 + ret + + +// fabs. + .globl _D5tanya4math8nbtheory10__T3absTdZ3absFNaNbNiNfdZd + .type _D5tanya4math8nbtheory10__T3absTdZ3absFNaNbNiNfdZd, @function + +_D5tanya4math8nbtheory10__T3absTdZ3absFNaNbNiNfdZd: + mov $0x7fffffffffffffff, %rax + movq %rax, %xmm1 + andpd %xmm1, %xmm0 + ret + + +// fabsl. + .globl _D5tanya4math8nbtheory10__T3absTeZ3absFNaNbNiNfeZe + .type _D5tanya4math8nbtheory10__T3absTeZ3absFNaNbNiNfeZe, @function + +// Load the parameter from the stack onto FP stack, execute 'fabs' instruction +// The result is returned in ST0. +_D5tanya4math8nbtheory10__T3absTeZ3absFNaNbNiNfeZe: + fldt 0x8(%rsp) + fabs + ret |