mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-27 06:34:11 +00:00
77 lines
1.2 KiB
ArmAsm
77 lines
1.2 KiB
ArmAsm
#include "asm_i386.h"
|
|
|
|
.data
|
|
fpenv: .long 0, 0, 0, 0, 0, 0, 0, 0
|
|
|
|
.text
|
|
.globl C(StartMSRInterval)
|
|
C(StartMSRInterval):
|
|
movl $0x11,%ecx // read the CESR
|
|
.byte 0x0F
|
|
.byte 0x32 // RDMSR
|
|
|
|
andl $0xFE3FFE3F,%eax // stop both counters
|
|
.byte 0x0F
|
|
.byte 0x30 // WRMSR
|
|
|
|
movl 4(%esp),%eax // point counter 0 to desired event, with counters
|
|
andl $0x3F,%eax // still stopped
|
|
movl $0x11,%ecx
|
|
.byte 0x0F
|
|
.byte 0x30 // WRMSR
|
|
|
|
movl $0x12,%ecx // set counter 0 to the value 0
|
|
subl %eax,%eax
|
|
subl %edx,%edx
|
|
.byte 0x0F
|
|
.byte 0x30 // WRMSR
|
|
|
|
movl 4(%esp),%eax // restart counter 0 with selected event
|
|
andl $0x3F,%eax
|
|
subl %edx,%edx
|
|
orl $0xC0,%eax
|
|
movl $0x11,%ecx // control and event select
|
|
.byte 0x0F
|
|
.byte 0x30 // WRMSR
|
|
|
|
ret
|
|
|
|
.globl C(EndMSRInterval)
|
|
C(EndMSRInterval):
|
|
movl $0x12,%ecx // counter 0
|
|
.byte 0x0F
|
|
.byte 0x32 // RDMSR
|
|
|
|
ret // lower 32 bits of count in %eax
|
|
|
|
#if 0
|
|
.data
|
|
Lxxx: .long 0
|
|
|
|
.text
|
|
|
|
.globl C(setstackcheck)
|
|
C(setstackcheck):
|
|
|
|
movl %esp,%eax
|
|
subl $0x38000,%eax
|
|
movl $0x5A5A5A5A,(%eax)
|
|
movl %eax,Lxxx
|
|
|
|
ret
|
|
|
|
|
|
.globl C(dostackcheck)
|
|
C(dostackcheck):
|
|
|
|
movl Lxxx,%edx
|
|
movl $0,%eax
|
|
|
|
cmpl $0x5A5A5A5A,(%edx)
|
|
jz qqq
|
|
incl %eax
|
|
qqq:
|
|
|
|
ret
|
|
#endif
|
|
|