minix/lib/libc/arch/i386/gen/flt_rounds.S
Ben Gras 2fe8fb192f Full switch to clang/ELF. Drop ack. Simplify.
There is important information about booting non-ack images in
docs/UPDATING. ack/aout-format images can't be built any more, and
booting clang/ELF-format ones is a little different. Updating to the
new boot monitor is recommended.

Changes in this commit:

	. drop boot monitor -> allowing dropping ack support
	. facility to copy ELF boot files to /boot so that old boot monitor
	  can still boot fairly easily, see UPDATING
	. no more ack-format libraries -> single-case libraries
	. some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases
	. drop several ack toolchain commands, but not all support
	  commands (e.g. aal is gone but acksize is not yet).
	. a few libc files moved to netbsd libc dir
	. new /bin/date as minix date used code in libc/
	. test compile fix
	. harmonize includes
	. /usr/lib is no longer special: without ack, /usr/lib plays no
	  kind of special bootstrapping role any more and bootstrapping
	  is done exclusively through packages, so releases depend even
	  less on the state of the machine making them now.
	. rename nbsd_lib* to lib*
	. reduce mtree
2012-02-14 14:52:02 +01:00

33 lines
579 B
ArmAsm

/* $NetBSD: flt_rounds.S,v 1.6 1999/08/23 08:45:09 kleink Exp $ */
/*
* Written by J.T. Conklin, Apr 4, 1995
* Public domain.
*/
#include <machine/asm.h>
.text
_ALIGN_TEXT
_map:
.byte 1 /* round to nearest */
.byte 3 /* round to negative infinity */
.byte 2 /* round to positive infinity */
.byte 0 /* round to zero */
ENTRY(__flt_rounds)
subl $4,%esp
fnstcw (%esp)
movl (%esp),%eax
shrl $10,%eax
andl $3,%eax
#ifdef PIC
PIC_PROLOGUE
leal PIC_GOTOFF(_map),%ecx
PIC_EPILOGUE
movb (%ecx,%eax,1),%al
#else
movb _map(,%eax,1),%al
#endif
addl $4,%esp
ret