openlibm/amd64/e_fmodf.S

/*
 * Based on the i387 version written by J.T. Conklin <jtc@netbsd.org>.
 * Public domain.
 */

#include <amd64/bsd_asm.h>

ENTRY(fmodf)
	movss	%xmm0,-4(%rsp)
	movss	%xmm1,-8(%rsp)
	flds	-8(%rsp)
	flds	-4(%rsp)
1:	fprem
	fstsw	%ax
	testw	$0x400,%ax
	jne	1b
	fstps	-4(%rsp)
	movss	-4(%rsp),%xmm0
	fstp	%st
	ret
END(fmodf)

/* Enable stack protection */
#if defined(__ELF__)
.section .note.GNU-stack,"",%progbits
#endif
Add fmod assembly version (#255) From https://github.com/freebsd/freebsd-src/tree/master/lib/msun/amd64 2021-11-14 22:12:34 -05:00			`/*`
			`* Based on the i387 version written by J.T. Conklin <jtc@netbsd.org>.`
			`* Public domain.`
			`*/`

			`#include <amd64/bsd_asm.h>`

			`ENTRY(fmodf)`
			`movss %xmm0,-4(%rsp)`
			`movss %xmm1,-8(%rsp)`
			`flds -8(%rsp)`
			`flds -4(%rsp)`
			`1: fprem`
			`fstsw %ax`
			`testw $0x400,%ax`
			`jne 1b`
			`fstps -4(%rsp)`
			`movss -4(%rsp),%xmm0`
			`fstp %st`
			`ret`
			`END(fmodf)`
Add stack markings for GNU to fmod assembly files (#307) This adds stack markings to the missing fmod .S files, otherwise the final libopenlibm object file gets marked with an executable stack. Output when compiling from source on Gentoo Linux: ``` * QA Notice: The following files contain writable and executable sections * Files with such sections will not work properly (or at all!) on some * architectures/operating systems. A bug should be filed at * https://bugs.gentoo.org/ to make sure the issue is fixed. * For more information, see: * * https://wiki.gentoo.org/wiki/Hardened/GNU_stack_quickstart * * Please include the following list of files in your report: * Note: Bugs should be filed for the respective maintainers * of the package in question and not hardened@gentoo.org. * RWX --- --- usr/lib64/libopenlibm.so.4.0 ``` 2024-08-05 00:12:41 +02:00
			`/* Enable stack protection */`
			`#if defined(__ELF__)`
			`.section .note.GNU-stack,"",%progbits`
			`#endif`