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WIP [NTOS] Fix handling of non-volatiles in trap vs exception frame

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This commit is contained in:
Timo Kreuzer 2022-12-15 21:55:16 +02:00
parent 7f2ed4d02f
commit 048db88043
2 changed files with 10 additions and 7 deletions
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9
ntoskrnl/ke/amd64/context.c
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@ -36,11 +36,11 @@ KeContextToTrapFrame(IN PCONTEXT Context,
if (ContextFlags & CONTEXT_INTEGER)
{
TrapFrame->Rax = Context->Rax;
TrapFrame->Rbx = Context->Rbx;
//TrapFrame->Rbx = Context->Rbx;
TrapFrame->Rcx = Context->Rcx;
TrapFrame->Rdx = Context->Rdx;
TrapFrame->Rsi = Context->Rsi;
TrapFrame->Rdi = Context->Rdi;
//TrapFrame->Rsi = Context->Rsi;
//TrapFrame->Rdi = Context->Rdi;
TrapFrame->Rbp = Context->Rbp;
TrapFrame->R8 = Context->R8;
TrapFrame->R9 = Context->R9;
@ -48,6 +48,9 @@ KeContextToTrapFrame(IN PCONTEXT Context,
TrapFrame->R11 = Context->R11;
if (ExceptionFrame)
{
ExceptionFrame->Rbx = Context->Rbx;
ExceptionFrame->Rsi = Context->Rsi;
ExceptionFrame->Rdi = Context->Rdi;
ExceptionFrame->R12 = Context->R12;
ExceptionFrame->R13 = Context->R13;
ExceptionFrame->R14 = Context->R14;

8
sdk/include/asm/trapamd64.inc
View file

@ -57,7 +57,7 @@ MACRO(EnterTrap, Flags)
lea rbp, [rsp]
.setframe rbp, 0
if (Flags AND TF_NONVOLATILES)
if (Flags AND TF_NONVOLATILES) // ???
/* Save non-volatile registers */
mov [rbp + KTRAP_FRAME_Rbx], rbx
.savereg rbx, KTRAP_FRAME_Rbx
@ -228,9 +228,9 @@ kernel_mode_return:
if (Flags AND TF_NONVOLATILES)
/* Restore non-volatile registers */
mov rbx, [rbp + KTRAP_FRAME_Rbx]
mov rdi, [rbp + KTRAP_FRAME_Rdi]
mov rsi, [rbp + KTRAP_FRAME_Rsi]
//mov rbx, [rbp + KTRAP_FRAME_Rbx]
//mov rdi, [rbp + KTRAP_FRAME_Rdi]
//mov rsi, [rbp + KTRAP_FRAME_Rsi]
endif
if (Flags AND TF_VOLATILES)