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>
73 lines
1.7 KiB
ArmAsm
73 lines
1.7 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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.file "floorl.S"
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.text
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#ifdef __x86_64__
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.align 8
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#else
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.align 4
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#endif
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.globl __MINGW_USYMBOL(floorl)
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.def __MINGW_USYMBOL(floorl); .scl 2; .type 32; .endef
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__MINGW_USYMBOL(floorl):
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#if defined(_AMD64_) || defined(__x86_64__)
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fldt (%rdx)
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subq $24,%rsp
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fstcw 8(%rsp) /* store fpu control word */
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/* We use here %edx although only the low 1 bits are defined.
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But none of the operations should care and they are faster
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than the 16 bit operations. */
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movl $0x400,%edx /* round towards -oo */
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orl 8(%rsp),%edx
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andl $0xf7ff,%edx
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movl %edx,(%rsp)
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fldcw (%rsp) /* load modified control word */
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frndint /* round */
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fldcw 8(%rsp) /* restore original control word */
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addq $24,%rsp
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movq %rcx,%rax
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movq $0,8(%rcx)
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fstpt (%rcx)
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ret
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#elif defined(_ARM_) || defined(__arm__)
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vmrs r1, fpscr
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bic r0, r1, #0x00c00000
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orr r0, r0, #0x00800000 /* Round towards Minus Infinity */
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vmsr fpscr, r0
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vcvtr.s32.f64 s0, d0
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vcvt.f64.s32 d0, s0
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vmsr fpscr, r1
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bx lr
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#elif defined(_X86_) || defined(__i386__)
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fldt 4(%esp)
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subl $8,%esp
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fstcw 4(%esp) /* store fpu control word */
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/* We use here %edx although only the low 1 bits are defined.
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But none of the operations should care and they are faster
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than the 16 bit operations. */
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movl $0x400,%edx /* round towards -oo */
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orl 4(%esp),%edx
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andl $0xf7ff,%edx
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movl %edx,(%esp)
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fldcw (%esp) /* load modified control word */
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frndint /* round */
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fldcw 4(%esp) /* restore original control word */
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addl $8,%esp
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ret
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#endif
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