792e51b721
This patch adds the long double functions missing in newlib to Cygwin.
Apart from some self-written additions (exp10l, finite{f,l}, isinf{f,l},
isnan{f,l}, pow10l) the files are taken from the Mingw-w64 math lib.
Minor changes were required, e.g. substitue _WIN64 with __x86_64__ and
fixing __FLT_RPT_DOMAIN/__FLT_RPT_ERANGE for Cygwin.
Cygwin:
* math: New subdir with math functions.
* Makefile.in (VPATH): Add math subdir.
(MATH_OFILES): List of object files collected from building files in
math subdir.
(DLL_OFILES): Add $(MATH_OFILES).
${CURDIR}/libm.a: Add $(MATH_OFILES) to build.
* common.din: Add new functions from math subdir.
* i686.din: Align to new math subdir. Remove functions now commonly
available.
* x86_64.din: Ditto.
* math.h: math.h wrapper to define mingw structs used in some files in
math subdir.
* include/cygwin/version.h: Bump API minor version.
newlib:
* libc/include/complex.h: Add prototypes for complex long double
functions. Only define for Cygwin.
* libc/include/math.h: Additionally enable prototypes of long double
functions for Cygwin. Add Cygwin-only prototypes for dreml, sincosl,
exp10l and pow10l. Explain why we don't add them to newlib.
* libc/include/tgmath.h: Enable long double handling on Cygwin.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
131 lines
1.9 KiB
ArmAsm
131 lines
1.9 KiB
ArmAsm
/**
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* This file has no copyright assigned and is placed in the Public Domain.
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* This file is part of the mingw-w64 runtime package.
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* No warranty is given; refer to the file DISCLAIMER.PD within this package.
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*/
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#include <_mingw_mac.h>
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/*
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* frexpl(long double x, int* expnt) extracts the exponent from x.
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* It returns an integer power of two to expnt and the significand
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* between 0.5 and 1 to y. Thus x = y * 2**expn.
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*/
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#ifdef __x86_64__
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.align 8
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#else
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.align 2
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#endif
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.globl __MINGW_USYMBOL(frexpl)
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__MINGW_USYMBOL(frexpl):
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#ifdef __x86_64__
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pushq %rbp
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movq %rsp,%rbp
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subq $48,%rsp
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pushq %rsi
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fldt (%rdx)
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movq %rcx,%r9
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fld %st(0)
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fstpt -12(%rbp)
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leaq -4(%rbp),%rcx
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movw -4(%rbp),%dx
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andl $32767,%edx
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jne L25
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fldz
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fucompp
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fnstsw %ax
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andb $68,%ah
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xorb $64,%ah
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jne L21
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movl $0,(%r8)
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fldz
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jmp L24
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.align 4,0x90
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.align 4,0x90
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L21:
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fldt -12(%rbp)
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fadd %st(0),%st
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fstpt -12(%rbp)
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decl %edx
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movw (%rcx),%si
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andl $32767,%esi
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jne L22
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cmpl $-66,%edx
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jg L21
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L22:
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add %esi,%edx
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jmp L19
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.align 2,0x90
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L25:
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fstp %st(0)
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L19:
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addl $-16382,%edx
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movl %edx,(%r8)
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movw (%rcx),%ax
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andl $-32768,%eax
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orl $16382,%eax
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movw %ax,(%rcx)
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fldt -12(%rbp)
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L24:
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popq %rsi
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movq %r9,%rax
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movq $0,8(%r9)
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fstpt (%r9)
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leave
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ret
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#else
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pushl %ebp
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movl %esp,%ebp
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subl $24,%esp
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pushl %esi
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pushl %ebx
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fldt 8(%ebp)
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movl 20(%ebp),%ebx
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fld %st(0)
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fstpt -12(%ebp)
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leal -4(%ebp),%ecx
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movw -4(%ebp),%dx
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andl $32767,%edx
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jne L25
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fldz
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fucompp
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fnstsw %ax
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andb $68,%ah
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xorb $64,%ah
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jne L21
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movl $0,(%ebx)
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fldz
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jmp L24
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.align 2,0x90
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.align 2,0x90
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L21:
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fldt -12(%ebp)
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fadd %st(0),%st
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fstpt -12(%ebp)
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decl %edx
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movw (%ecx),%si
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andl $32767,%esi
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jne L22
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cmpl $-66,%edx
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jg L21
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L22:
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addl %esi,%edx
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jmp L19
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.align 2,0x90
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L25:
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fstp %st(0)
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L19:
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addl $-16382,%edx
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movl %edx,(%ebx)
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movw (%ecx),%ax
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andl $-32768,%eax
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orl $16382,%eax
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movw %ax,(%ecx)
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fldt -12(%ebp)
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L24:
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leal -32(%ebp),%esp
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popl %ebx
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popl %esi
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leave
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ret
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#endif
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