; Simple test for ring-3 debugging of mtrr.inc.
; Contains some inputs taken from real-life MTRRs and expected outputs.
format PE console
;include 'win32a.inc'
macro $Revision [args]
{
}
include '../proc32.inc'
include '../struct.inc'
entry start
; one test has 8, another test has 10
; this is the maximal value for storing/copying, real value is in MTRRCAP
MAX_VARIABLE_MTRR = 10
start:
; Copy test inputs, run init_mtrr, compare with test outputs. Repeat.
mov esi, test1_in_data
mov edi, mtrrdata
mov ecx, mtrrdata_size / 4
rep movsd
call init_mtrr
mov esi, test1_out_data
mov edi, mtrrdata
mov ecx, mtrrdata_size / 4
repz cmpsd
jnz .fail
mov esi, test2_in_data
mov edi, mtrrdata
mov ecx, mtrrdata_size / 4
rep movsd
call init_mtrr
mov esi, test2_out_data
mov edi, mtrrdata
mov ecx, mtrrdata_size / 4
repz cmpsd
jnz .fail
ret
.fail:
int3
jmp $
; Helper procedure for _rdmsr/_wrmsr, replacements of rdmsr/wrmsr.
; Returns pointer to memory containing the given MSR.
; in: ecx = MSR
; out: esi -> MSR data
proc get_msr_ptr
mov esi, mtrrcap
cmp ecx, 0xFE
jz .ok
mov esi, mtrr_def_type
cmp ecx, 0x2FF
jz .ok
lea esi, [ecx-0x200]
cmp esi, MAX_VARIABLE_MTRR*2
jae .fail
lea esi, [mtrr+esi*8]
.ok:
ret
.fail:
int3
ret
endp
; Emulates rdmsr.
proc _rdmsr
push esi
call get_msr_ptr
mov eax, [esi]
mov edx, [esi+4]
pop esi
ret
endp
; Emulates wrmsr.
proc _wrmsr
push esi
call get_msr_ptr
mov [esi], eax
mov [esi+4], edx
pop esi
ret
endp
; Macro to substitute rdmsr/wrmsr with emulating code.
macro rdmsr
{
call _rdmsr
}
macro wrmsr
{
call _wrmsr
}
; Our emulation of rdmsr/wrmsr has nothing to do with real cache
; and system-wide settings,
; remove all attempts to wbinvd and disable/enable cache in cr0.
macro wbinvd
{
}
macro mov a,b
{
if ~(a eq cr0) & ~(b eq cr0)
mov a, b
end if
}
macro movi r,i
{
push i
pop r
}
include '../kglobals.inc'
CAPS_MTRR equ 12
MSR_MTRR_DEF_TYPE equ 0x2FF
CAPS_PGE equ 13
CAPS_PAT equ 16
MSR_CR_PAT equ 0x277
PAT_VALUE equ 0x00070106 ; (UC<<24)|(UCM<<16)|(WC<<8)|WB
MEM_WB equ 6 ;write-back memory
MEM_WC equ 1 ;write combined memory
MEM_UC equ 0 ;uncached memory
include 'mtrr.inc'
BOOT_VARS = 0
BOOT.mtrr db 1
align 4
cpu_caps dd 1 shl CAPS_MTRR
LFBAddress dd 0xE0000000
LFBSize dd 0x10000000
MEM_AMOUNT dd 0 ; not used, needed for compilation
align 4
; Test 1: input
test1_in_data:
test1_phys_addr_width db 36
rb 3
test1_in_mtrrcap dq 0xD08
test1_in_mtrr_def_type dq 0xC00
test1_in_mtrrs:
dq 0x000000006, 0xF00000800
dq 0x100000006, 0xFC0000800
dq 0x0BC000000, 0xFFC000800
dq 0x0C0000000, 0xFC0000800
dq 0x138000000, 0xFF8000800
dq 0, 0
dq 0, 0
dq 0, 0
dq -1, -1 ; not used
dq -1, -1 ; not used
; Test 1: output
test1_out_data:
dd 36 ; phys_addr_width, readonly
dq 0xD08 ; MTRRCAP, readonly
dq 0xC00 ; MTRR_DEF_TYPE, should be the same
dq 0x000000006, 0xF80000800
dq 0x080000006, 0xFC0000800
dq 0x0BC000000, 0xFFC000800
dq 0x100000006, 0xFC0000800
dq 0x138000000, 0xFF8000800
dq 0x0E0000001, 0xFFF000800 ; added for [LFBAddress]
dq 0, 0
dq 0, 0
dq -1, -1 ; not used
dq -1, -1 ; not used
; Test 2: input
test2_in_data:
test2_phys_addr_width db 39
rb 3
test2_in_mtrrcap dq 0xD0A
test2_in_mtrr_def_type dq 0xC00
test2_in_mtrrs:
dq 0x0000000006, 0x7F00000800
dq 0x0100000006, 0x7FE0000800
dq 0x00E0000000, 0x7FE0000800
dq 0x00DC000000, 0x7FFC000800
dq 0x00DBC00000, 0x7FFFC00800
dq 0x011F800000, 0x7FFF800800
dq 0x011F400000, 0x7FFFC00800
dq 0x011F200000, 0x7FFFE00800
dq 0, 0
dq 0, 0
; Test 2: output
test2_out_data:
dd 39 ; phys_addr_width, readonly
dq 0xD0A ; MTRRCAP, readonly
dq 0xC00 ; MTRR_DEF_TYPE, should be the same
dq 0x0000000006, 0x7F80000800
dq 0x0080000006, 0x7FC0000800
dq 0x00C0000006, 0x7FE0000800
dq 0x00DC000000, 0x7FFC000800
dq 0x00DBC00000, 0x7FFFC00800
dq 0x0100000006, 0x7FE0000800
dq 0x011F800000, 0x7FFF800800
dq 0x011F400000, 0x7FFFC00800
dq 0x011F200000, 0x7FFFE00800
dq 0x00E0000001, 0x7FFF000800 ; added for [LFBAddress]
IncludeIGlobals
align 4
mtrrdata:
cpu_phys_addr_width db ?
rb 3
mtrrcap dq ?
mtrr_def_type dq ?
mtrr rq MAX_VARIABLE_MTRR*2
mtrrdata_size = $ - mtrrdata
IncludeUGlobals