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reduce kernel memory. single tss, copy_on_write io permission map

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disabled debug

git-svn-id: svn://kolibrios.org@430 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
2007-03-23 07:01:28 +00:00
parent e779187e24
commit b26a2baf38
10 changed files with 177 additions and 214 deletions
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48
kernel/branches/flat_kernel/core/debug.inc
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@@ -123,19 +123,19 @@ debug_getcontext:
jnz .ret
call get_debuggee_slot
jc .ret
imul eax, tss_step/32
add eax, tss_data
mov edi, edx
cmp [eax+TSS._cs], app_code
jnz .ring0
lea esi, [eax+TSS._eip]
shr ecx, 2
rep movsd
jmp .ret
; imul eax, tss_step/32
; add eax, tss_data
mov edi, edx
; cmp [eax+TSS._cs], app_code
; jnz .ring0
; lea esi, [eax+TSS._eip]
; shr ecx, 2
; rep movsd
; jmp .ret
.ring0:
; note that following code assumes that all interrupt/exception handlers
; saves ring-3 context by pushad in this order
mov esi, [eax+TSS._esp0]
mov esi, [tss._esp0]
; top of ring0 stack: ring3 stack ptr (ss+esp), iret data (cs+eip+eflags), pushad
sub esi, 8+12+20h
lodsd ;edi
@@ -182,17 +182,17 @@ debug_setcontext:
jnz .ret
call get_debuggee_slot
jc .stiret
imul eax, tss_step/32
add eax, tss_data
mov esi, edx
cmp [eax+TSS._cs], app_code
jnz .ring0
lea edi, [eax+TSS._eip]
shr ecx, 2
rep movsd
jmp .stiret
; imul eax, tss_step/32
; add eax, tss_data
mov esi, edx
; cmp [eax+TSS._cs], app_code
; jnz .ring0
; lea edi, [eax+TSS._eip]
; shr ecx, 2
; rep movsd
; jmp .stiret
.ring0:
mov edi, [eax+TSS._esp0]
mov edi, [tss._esp0]
sub edi, 8+12+20h
mov eax, [esi+24h] ;edi
stosd
@@ -247,8 +247,8 @@ debug_set_drx:
btr dword [eax+10h], ecx ; clear L<i> bit
test byte [eax+10h], 55h
jnz .okret
imul eax, ebp, tss_step/32
and byte [eax + tss_data + TSS._trap], not 1
; imul eax, ebp, tss_step/32
; and byte [eax + tss_data + TSS._trap], not 1
.okret:
and dword [esp+36], 0
sti
@@ -289,8 +289,8 @@ debug_set_drx:
not edx
and [eax+10h+2], dx
or [eax+10h+2], bx ; set R/W and LEN fields
imul eax, ebp, tss_step/32
or byte [eax + tss_data + TSS._trap], 1
; imul eax, ebp, tss_step/32
; or byte [eax + tss_data + TSS._trap], 1
jmp .okret
debug_read_process_memory: