plan9fox/sys/src/ape/lib/ap/sparc/main9.s

#define NPRIVATES	16

GLOBL	_tos(SB), $4
GLOBL	_errnoloc(SB), $4
GLOBL	_privates(SB), $4
GLOBL	_nprivates(SB), $4

TEXT	_main(SB), 1, $(16+NPRIVATES*4)
	MOVW	$setSB(SB), R2

	/* _tos = arg */
	MOVW	R7, _tos(SB)
/*
	MOVW	_fpsr+0(SB), FSR
	FMOVD	$0.5, F26
	FSUBD	F26, F26, F24
	FADDD	F26, F26, F28
	FADDD	F28, F28, F30
*/
	MOVW	$12(SP), R1
	MOVW	R1, _errnoloc(SB)
	MOVW	$16(SP), R1
	MOVW	R1, _privates(SB)
	MOVW	$NPRIVATES, R1
	MOVW	R1, _nprivates(SB)

	JMPL	_envsetup(SB)
	MOVW	inargc-4(FP), R7
	MOVW	$inargv+0(FP), R8
	MOVW	R7, 4(R1)
	MOVW	R8, 8(R1)
	JMPL	main(SB)

loop:
	MOVW	R7, 4(R1)
	JMPL	exit(SB)
	MOVW	$_mul(SB),R7
	JMP	loop
ape: initialize _tos and use _tos->pid for getpid() 2012-12-03 04:22:21 +00:00			`#define NPRIVATES 16`

			`GLOBL _tos(SB), $4`
ape: threadsafe errno store errno on the private process stack so its always per process and not just per memory space. errno itself becomes a macro dereferencing int *_errnoloc; which is initialized from main9.s pointing to the private stack location. various fixes in programs that just imported errno variable with "extern int errno;" instead of including <errno.h>. 2013-03-11 17:57:22 +00:00			`GLOBL _errnoloc(SB), $4`
ape: initialize _tos and use _tos->pid for getpid() 2012-12-03 04:22:21 +00:00			`GLOBL _privates(SB), $4`
			`GLOBL _nprivates(SB), $4`

ape: threadsafe errno store errno on the private process stack so its always per process and not just per memory space. errno itself becomes a macro dereferencing int *_errnoloc; which is initialized from main9.s pointing to the private stack location. various fixes in programs that just imported errno variable with "extern int errno;" instead of including <errno.h>. 2013-03-11 17:57:22 +00:00			`TEXT _main(SB), 1, $(16+NPRIVATES*4)`
Import sources from 2011-03-30 iso image 2011-03-30 12:46:40 +00:00			`MOVW $setSB(SB), R2`
ape: initialize _tos and use _tos->pid for getpid() 2012-12-03 04:22:21 +00:00
			`/* _tos = arg */`
			`MOVW R7, _tos(SB)`
			`/*`
			`MOVW _fpsr+0(SB), FSR`
			`FMOVD $0.5, F26`
			`FSUBD F26, F26, F24`
			`FADDD F26, F26, F28`
			`FADDD F28, F28, F30`
			`*/`
ape: threadsafe errno store errno on the private process stack so its always per process and not just per memory space. errno itself becomes a macro dereferencing int *_errnoloc; which is initialized from main9.s pointing to the private stack location. various fixes in programs that just imported errno variable with "extern int errno;" instead of including <errno.h>. 2013-03-11 17:57:22 +00:00			`MOVW $12(SP), R1`
			`MOVW R1, _errnoloc(SB)`
			`MOVW $16(SP), R1`
ape: initialize _tos and use _tos->pid for getpid() 2012-12-03 04:22:21 +00:00			`MOVW R1, _privates(SB)`
			`MOVW $NPRIVATES, R1`
			`MOVW R1, _nprivates(SB)`

Import sources from 2011-03-30 iso image 2011-03-30 12:46:40 +00:00			`JMPL _envsetup(SB)`
			`MOVW inargc-4(FP), R7`
			`MOVW $inargv+0(FP), R8`
			`MOVW R7, 4(R1)`
			`MOVW R8, 8(R1)`
			`JMPL main(SB)`

			`loop:`
			`MOVW R7, 4(R1)`
			`JMPL exit(SB)`
			`MOVW $_mul(SB),R7`
			`JMP loop`