rename i386 exp.s to exp_ld.s

this commit is for the sake of reviewable history.

diff --git a/src/math/i386/exp.c b/src/math/i386/exp.c
new file mode 100644 (file)
index 0000000..1128228
--- /dev/null
+++ b/src/math/i386/exp.c
@@ -0,0 +1 @@
+// see exp_ld.s

diff --git a/src/math/i386/exp.s b/src/math/i386/exp.s
deleted file mode 100644 (file)
index df87c49..0000000
--- a/src/math/i386/exp.s
+++ /dev/null
@@ -1,146 +0,0 @@
-.global expm1f
-.type expm1f,@function
-expm1f:
-       flds 4(%esp)
-       mov 4(%esp),%eax
-       add %eax,%eax
-       cmp $0x01000000,%eax
-       jae 1f
-               # subnormal x, return x with underflow
-       fld %st(0)
-       fmul %st(1)
-       fstps 4(%esp)
-       ret
-
-.global expm1l
-.type expm1l,@function
-expm1l:
-       fldt 4(%esp)
-       jmp 1f
-
-.global expm1
-.type expm1,@function
-expm1:
-       fldl 4(%esp)
-       mov 8(%esp),%eax
-       add %eax,%eax
-       cmp $0x00200000,%eax
-       jae 1f
-               # subnormal x, return x with underflow
-       fsts 4(%esp)
-       ret
-1:     fldl2e
-       fmulp
-       mov $0xc2820000,%eax
-       push %eax
-       flds (%esp)
-       pop %eax
-       fucomp %st(1)
-       fnstsw %ax
-       sahf
-       fld1
-       jb 1f
-               # x*log2e < -65, return -1 without underflow
-       fstp %st(1)
-       fchs
-       ret
-1:     fld %st(1)
-       fabs
-       fucom %st(1)
-       fnstsw %ax
-       fstp %st(0)
-       fstp %st(0)
-       sahf
-       ja 1f
-       f2xm1
-       ret
-1:     call 1f
-       fld1
-       fsubrp
-       ret
-
-.global exp2f
-.type exp2f,@function
-exp2f:
-       flds 4(%esp)
-       jmp 1f
-
-.global exp2l
-.global __exp2l
-.hidden __exp2l
-.type exp2l,@function
-exp2l:
-__exp2l:
-       fldt 4(%esp)
-       jmp 1f
-
-.global expf
-.type expf,@function
-expf:
-       flds 4(%esp)
-       jmp 2f
-
-.global exp
-.type exp,@function
-exp:
-       fldl 4(%esp)
-2:     fldl2e
-       fmulp
-       jmp 1f
-
-.global exp2
-.type exp2,@function
-exp2:
-       fldl 4(%esp)
-1:     sub $12,%esp
-       fld %st(0)
-       fstpt (%esp)
-       mov 8(%esp),%ax
-       and $0x7fff,%ax
-       cmp $0x3fff+13,%ax
-       jb 4f             # |x| < 8192
-       cmp $0x3fff+15,%ax
-       jae 3f            # |x| >= 32768
-       fsts (%esp)
-       cmpl $0xc67ff800,(%esp)
-       jb 2f             # x > -16382
-       movl $0x5f000000,(%esp)
-       flds (%esp)       # 0x1p63
-       fld %st(1)
-       fsub %st(1)
-       faddp
-       fucomp %st(1)
-       fnstsw
-       sahf
-       je 2f             # x - 0x1p63 + 0x1p63 == x
-       movl $1,(%esp)
-       flds (%esp)       # 0x1p-149
-       fdiv %st(1)
-       fstps (%esp)      # raise underflow
-2:     fld1
-       fld %st(1)
-       frndint
-       fxch %st(2)
-       fsub %st(2)       # st(0)=x-rint(x), st(1)=1, st(2)=rint(x)
-       f2xm1
-       faddp             # 2^(x-rint(x))
-1:     fscale
-       fstp %st(1)
-       add $12,%esp
-       ret
-3:     xor %eax,%eax
-4:     cmp $0x3fff-64,%ax
-       fld1
-       jb 1b             # |x| < 0x1p-64
-       fstpt (%esp)
-       fistl 8(%esp)
-       fildl 8(%esp)
-       fsubrp %st(1)
-       addl $0x3fff,8(%esp)
-       f2xm1
-       fld1
-       faddp             # 2^(x-rint(x))
-       fldt (%esp)       # 2^rint(x)
-       fmulp
-       add $12,%esp
-       ret

diff --git a/src/math/i386/exp_ld.s b/src/math/i386/exp_ld.s
new file mode 100644 (file)
index 0000000..df87c49
--- /dev/null
+++ b/src/math/i386/exp_ld.s
@@ -0,0 +1,146 @@
+.global expm1f
+.type expm1f,@function
+expm1f:
+       flds 4(%esp)
+       mov 4(%esp),%eax
+       add %eax,%eax
+       cmp $0x01000000,%eax
+       jae 1f
+               # subnormal x, return x with underflow
+       fld %st(0)
+       fmul %st(1)
+       fstps 4(%esp)
+       ret
+
+.global expm1l
+.type expm1l,@function
+expm1l:
+       fldt 4(%esp)
+       jmp 1f
+
+.global expm1
+.type expm1,@function
+expm1:
+       fldl 4(%esp)
+       mov 8(%esp),%eax
+       add %eax,%eax
+       cmp $0x00200000,%eax
+       jae 1f
+               # subnormal x, return x with underflow
+       fsts 4(%esp)
+       ret
+1:     fldl2e
+       fmulp
+       mov $0xc2820000,%eax
+       push %eax
+       flds (%esp)
+       pop %eax
+       fucomp %st(1)
+       fnstsw %ax
+       sahf
+       fld1
+       jb 1f
+               # x*log2e < -65, return -1 without underflow
+       fstp %st(1)
+       fchs
+       ret
+1:     fld %st(1)
+       fabs
+       fucom %st(1)
+       fnstsw %ax
+       fstp %st(0)
+       fstp %st(0)
+       sahf
+       ja 1f
+       f2xm1
+       ret
+1:     call 1f
+       fld1
+       fsubrp
+       ret
+
+.global exp2f
+.type exp2f,@function
+exp2f:
+       flds 4(%esp)
+       jmp 1f
+
+.global exp2l
+.global __exp2l
+.hidden __exp2l
+.type exp2l,@function
+exp2l:
+__exp2l:
+       fldt 4(%esp)
+       jmp 1f
+
+.global expf
+.type expf,@function
+expf:
+       flds 4(%esp)
+       jmp 2f
+
+.global exp
+.type exp,@function
+exp:
+       fldl 4(%esp)
+2:     fldl2e
+       fmulp
+       jmp 1f
+
+.global exp2
+.type exp2,@function
+exp2:
+       fldl 4(%esp)
+1:     sub $12,%esp
+       fld %st(0)
+       fstpt (%esp)
+       mov 8(%esp),%ax
+       and $0x7fff,%ax
+       cmp $0x3fff+13,%ax
+       jb 4f             # |x| < 8192
+       cmp $0x3fff+15,%ax
+       jae 3f            # |x| >= 32768
+       fsts (%esp)
+       cmpl $0xc67ff800,(%esp)
+       jb 2f             # x > -16382
+       movl $0x5f000000,(%esp)
+       flds (%esp)       # 0x1p63
+       fld %st(1)
+       fsub %st(1)
+       faddp
+       fucomp %st(1)
+       fnstsw
+       sahf
+       je 2f             # x - 0x1p63 + 0x1p63 == x
+       movl $1,(%esp)
+       flds (%esp)       # 0x1p-149
+       fdiv %st(1)
+       fstps (%esp)      # raise underflow
+2:     fld1
+       fld %st(1)
+       frndint
+       fxch %st(2)
+       fsub %st(2)       # st(0)=x-rint(x), st(1)=1, st(2)=rint(x)
+       f2xm1
+       faddp             # 2^(x-rint(x))
+1:     fscale
+       fstp %st(1)
+       add $12,%esp
+       ret
+3:     xor %eax,%eax
+4:     cmp $0x3fff-64,%ax
+       fld1
+       jb 1b             # |x| < 0x1p-64
+       fstpt (%esp)
+       fistl 8(%esp)
+       fildl 8(%esp)
+       fsubrp %st(1)
+       addl $0x3fff,8(%esp)
+       f2xm1
+       fld1
+       faddp             # 2^(x-rint(x))
+       fldt (%esp)       # 2^rint(x)
+       fmulp
+       add $12,%esp
+       ret