x86_64 math asm, long double functions only

[musl] / src / math / x86_64 / floorl.s

diff --git a/src/math/x86_64/floorl.s b/src/math/x86_64/floorl.s
new file mode 100644 (file)
index 0000000..80da466
--- /dev/null
+++ b/src/math/x86_64/floorl.s
@@ -0,0 +1,27 @@
+.global floorl
+.type floorl,@function
+floorl:
+       fldt 8(%rsp)
+1:     mov $0x7,%al
+1:     fstcw 8(%rsp)
+       mov 9(%rsp),%ah
+       mov %al,9(%rsp)
+       fldcw 8(%rsp)
+       frndint
+       mov %ah,9(%rsp)
+       fldcw 8(%rsp)
+       ret
+
+.global ceill
+.type ceill,@function
+ceill:
+       fldt 8(%rsp)
+       mov $0xb,%al
+       jmp 1b
+
+.global truncl
+.type truncl,@function
+truncl:
+       fldt 8(%rsp)
+       mov $0xf,%al
+       jmp 1b