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| author | rofl0r <retnyg@gmx.net> | 2014-01-07 22:53:38 +0100 |
|---|---|---|
| committer | rofl0r <retnyg@gmx.net> | 2014-02-23 11:09:16 +0100 |
| commit | 664cd341921007cea52c8891f27ce35927dca378 (patch) | |
| tree | b6aa7594609a40616db8458f879dfdb0dddf4b7c /src/math/x32/expl.s | |
| parent | 323272db175204b951f119dae4bd99ef05e20f13 (diff) | |
| download | musl-664cd341921007cea52c8891f27ce35927dca378.tar.gz musl-664cd341921007cea52c8891f27ce35927dca378.tar.xz musl-664cd341921007cea52c8891f27ce35927dca378.zip | |
x32 port (diff against vanilla x86_64)
Diffstat (limited to 'src/math/x32/expl.s')
| -rw-r--r-- | src/math/x32/expl.s | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/src/math/x32/expl.s b/src/math/x32/expl.s index 3add810d..aabea45e 100644 --- a/src/math/x32/expl.s +++ b/src/math/x32/expl.s @@ -6,11 +6,11 @@ .global expl .type expl,@function expl: - fldt 8(%rsp) + fldt 8(%esp) # interesting case: 0x1p-32 <= |x| < 16384 # check if (exponent|0x8000) is in [0xbfff-32, 0xbfff+13] - mov 16(%rsp), %ax + mov 16(%esp), %ax or $0x8000, %ax sub $0xbfdf, %ax cmp $45, %ax @@ -29,29 +29,29 @@ expl: # should be 0x1.71547652b82fe178p0L == 0x3fff b8aa3b29 5c17f0bc # it will be wrong on non-nearest rounding mode 2: fldl2e - subq $48, %rsp + sub $48, %esp # hi = log2e_hi*x # 2^hi = exp2l(hi) fmul %st(1),%st fld %st(0) - fstpt (%rsp) - fstpt 16(%rsp) - fstpt 32(%rsp) + fstpt (%esp) + fstpt 16(%esp) + fstpt 32(%esp) call exp2l # if 2^hi == inf return 2^hi fld %st(0) - fstpt (%rsp) - cmpw $0x7fff, 8(%rsp) + fstpt (%esp) + cmpw $0x7fff, 8(%esp) je 1f - fldt 32(%rsp) - fldt 16(%rsp) + fldt 32(%esp) + fldt 16(%esp) # fpu stack: 2^hi x hi # exact mult: x*log2e fld %st(1) # c = 0x1p32+1 movq $0x41f0000000100000,%rax pushq %rax - fldl (%rsp) + fldl (%esp) # xh = x - c*x + c*x # xl = x - xh fmulp @@ -63,7 +63,7 @@ expl: # yh = log2e_hi - c*log2e_hi + c*log2e_hi movq $0x3ff7154765200000,%rax pushq %rax - fldl (%rsp) + fldl (%esp) # fpu stack: 2^hi x hi xh xl yh # lo = hi - xh*yh + xl*yh fld %st(2) @@ -74,7 +74,7 @@ expl: # yl = log2e_hi - yh movq $0x3de705fc2f000000,%rax pushq %rax - fldl (%rsp) + fldl (%esp) # fpu stack: 2^hi x lo xh xl yl # lo += xh*yl + xl*yl fmul %st, %st(2) @@ -87,8 +87,8 @@ expl: pushq %rax movq $0x82f0025f2dc582ee,%rax pushq %rax - fldt (%rsp) - addq $40,%rsp + fldt (%esp) + add $40,%esp # fpu stack: 2^hi x lo log2e_lo # lo += log2e_lo*x # return 2^hi + 2^hi (2^lo - 1) @@ -97,5 +97,5 @@ expl: f2xm1 fmul %st(1), %st faddp -1: addq $48, %rsp +1: add $48, %esp ret |