huwcampbell.com
Reactos
[RTL] x64/ARM: Alias RtlpBreakWithStatusInstruction to DbgBreakPointWithStatus; x64: fix a bug.
RtlpBreakWithStatusInstruction is just a label for KD.
On machines that have register calling conventions (basically all except
x86), the `Status` parameter for `DbgBreakPointWithStatus` is stored in
the first argument register.
https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/wdm/nf-wdm-dbgbreakpointwithstatus
On the x64 platform, `DbgBreakPointWithStatus` only uses the ECX register
and leaves EAX untouched. Verified on Windows.
+8
-19
+7
-14
sdk/lib/rtl/amd64/debug_asm.S
+7
-14
sdk/lib/rtl/amd64/debug_asm.S
···
8
8
9
9
#include <asm.inc>
10
10
11
-
/* GLOBALS ****************************************************************/
12
-
13
-
PUBLIC DbgBreakPoint
14
-
PUBLIC DbgBreakPointWithStatus
15
-
PUBLIC DbgUserBreakPoint
16
-
PUBLIC DebugService
17
-
PUBLIC DebugService2
18
-
PUBLIC RtlpBreakWithStatusInstruction
19
-
20
11
/* FUNCTIONS ***************************************************************/
21
12
22
13
.code64
23
14
15
+
PUBLIC DbgUserBreakPoint
24
16
DbgUserBreakPoint:
17
+
PUBLIC DbgBreakPoint
25
18
.PROC DbgBreakPoint
26
19
.endprolog
27
20
int 3
28
21
ret
29
22
.ENDP
30
23
24
+
PUBLIC RtlpBreakWithStatusInstruction
25
+
RtlpBreakWithStatusInstruction:
26
+
PUBLIC DbgBreakPointWithStatus
31
27
.PROC DbgBreakPointWithStatus
32
28
.endprolog
33
-
mov eax, ecx
34
-
.ENDP
35
-
36
-
.PROC RtlpBreakWithStatusInstruction
37
-
.endprolog
38
29
int 3
39
30
ret
40
31
.ENDP
41
32
33
+
PUBLIC DebugService2
42
34
DebugService2:
43
35
44
36
/* Pass the service number in eax */
···
56
48
* IN PVOID Argument1, // <r9> = [rsp + 32]
57
49
* IN PVOID Argument2); // [rsp + 40]
58
50
*/
51
+
PUBLIC DebugService
59
52
DebugService:
60
53
61
54
/* Prepare registers for interrupt */
+1
-5
sdk/lib/rtl/arm/debug_asm.S
+1
-5
sdk/lib/rtl/arm/debug_asm.S