WebSVN – Kolibri OS – Blame – /contrib/other/sdlquake-1.0.9/dosasm.S

Rev	Author	Line No.	Line
5131	clevermous	1	#include "asm_i386.h"
		2
		3	.data
		4	fpenv: .long 0, 0, 0, 0, 0, 0, 0, 0
		5
		6	.text
		7	.globl C(StartMSRInterval)
		8	C(StartMSRInterval):
		9	movl $0x11,%ecx // read the CESR
		10	.byte 0x0F
		11	.byte 0x32 // RDMSR
		12
		13	andl $0xFE3FFE3F,%eax // stop both counters
		14	.byte 0x0F
		15	.byte 0x30 // WRMSR
		16
		17	movl 4(%esp),%eax // point counter 0 to desired event, with counters
		18	andl $0x3F,%eax // still stopped
		19	movl $0x11,%ecx
		20	.byte 0x0F
		21	.byte 0x30 // WRMSR
		22
		23	movl $0x12,%ecx // set counter 0 to the value 0
		24	subl %eax,%eax
		25	subl %edx,%edx
		26	.byte 0x0F
		27	.byte 0x30 // WRMSR
		28
		29	movl 4(%esp),%eax // restart counter 0 with selected event
		30	andl $0x3F,%eax
		31	subl %edx,%edx
		32	orl $0xC0,%eax
		33	movl $0x11,%ecx // control and event select
		34	.byte 0x0F
		35	.byte 0x30 // WRMSR
		36
		37	ret
		38
		39	.globl C(EndMSRInterval)
		40	C(EndMSRInterval):
		41	movl $0x12,%ecx // counter 0
		42	.byte 0x0F
		43	.byte 0x32 // RDMSR
		44
		45	ret // lower 32 bits of count in %eax
		46
		47	#if 0
		48	.data
		49	Lxxx: .long 0
		50
		51	.text
		52
		53	.globl C(setstackcheck)
		54	C(setstackcheck):
		55
		56	movl %esp,%eax
		57	subl $0x38000,%eax
		58	movl $0x5A5A5A5A,(%eax)
		59	movl %eax,Lxxx
		60
		61	ret
		62
		63
		64	.globl C(dostackcheck)
		65	C(dostackcheck):
		66
		67	movl Lxxx,%edx
		68	movl $0,%eax
		69
		70	cmpl $0x5A5A5A5A,(%edx)
		71	jz qqq
		72	incl %eax
		73	qqq:
		74
		75	ret
		76	#endif
		77

Subversion Repositories Kolibri OS