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kernel: export GetCpuFreq

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git-svn-id: svn://kolibrios.org@3481 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
2013-04-26 10:57:25 +00:00
parent d15a13f685
commit d67b35544c
5 changed files with 24 additions and 13 deletions
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23
kernel/trunk/kernel.asm
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@@ -420,7 +420,7 @@ high_code:
call calculate_fast_getting_offset_for_WinMapAddress
; for Qemu or non standart video cards
; Unfortunately [BytesPerScanLine] does not always
; Unfortunately [BytesPerScanLine] does not always
; equal to [_display.width] * [ScreenBPP] / 8
call calculate_fast_getting_offset_for_LFB
@@ -837,16 +837,19 @@ end if
rdtsc ;call _rdtsc
sti
sub eax, ecx
xor edx, edx
shld edx, eax, 2
shl eax, 2
mov [CPU_FREQ], eax ; save tsc / sec
; mov ebx, 1000000
; div ebx
mov dword [cpu_freq], eax
mov dword [cpu_freq+4], edx
mov ebx, 1000000
div ebx
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; <20><>⨬<EFBFBD><E2A8AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>஢ <20><><EFBFBD>...
mov edx, 2251799814
mul edx
shr edx, 19
; mov edx, 2251799814
; mul edx
; shr edx, 19
mov [stall_mcs], edx
; PRINT CPU FREQUENCY
mov esi, boot_cpufreq
@@ -2240,10 +2243,14 @@ sysfn_getidletime: ; 18.4 = GET IDLETIME
ret
;------------------------------------------------------------------------------
sysfn_getcpuclock: ; 18.5 = GET TSC/SEC
mov eax, [CPU_FREQ]
mov eax, dword [cpu_freq]
mov [esp+32], eax
ret
;------------------------------------------------------------------------------
get_cpu_freq:
mov eax, dword [cpu_freq]
mov edx, dword [cpu_freq+4]
ret
; SAVE ramdisk to /hd/1/menuet.img
;!!!!!!!!!!!!!!!!!!!!!!!!
include 'blkdev/rdsave.inc'