\r
\r
ASM_GLOBAL ASM_PFX(CommonExceptionHandler)\r
-ASM_GLOBAL ASM_PFX(CommonInterruptEntry)\r
-ASM_GLOBAL ASM_PFX(HookAfterStubHeaderEnd)\r
\r
-#EXTRN ASM_PFX(mErrorCodeFlag):DWORD # Error code flags for exceptions\r
+#EXTRN ASM_PFX(mErrorCodeFlag):DWORD # Error code flags for exceptions\r
#EXTRN ASM_PFX(mDoFarReturnFlag):QWORD # Do far return flag\r
.text\r
\r
-#\r
-# exception handler stub table\r
-#\r
-Exception0Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 0\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception1Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 1\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception2Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 2\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception3Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 3\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception4Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 4\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception5Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 5\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception6Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 6\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception7Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 7\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception8Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 8\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception9Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 9\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception10Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 10\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception11Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 11\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception12Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 12\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception13Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 13\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception14Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 14\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception15Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 15\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception16Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 16\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception17Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 17\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception18Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 18\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception19Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 19\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception20Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 20\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception21Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 21\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception22Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 22\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception23Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 23\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception24Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 24\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception25Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 25\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception26Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 26\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception27Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 27\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception28Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 28\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception29Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 29\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception30Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 30\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
-Exception31Handle:\r
- .byte 0x6a # push #VectorNum\r
- .byte 31\r
- pushq %rax\r
- .byte 0x48, 0xB8\r
- .quad ASM_PFX(CommonInterruptEntry)\r
- jmp *%rax\r
- \r
+#ifdef __APPLE__\r
+# macros are different between GNU and Xcode as. \r
+.macro IDT_MACRO \r
+ push $0\r
+#else\r
+.macro IDT_MACRO arg\r
+ push \arg\r
+#endif\r
+ jmp ASM_PFX(CommonInterruptEntry)\r
+.endm\r
+\r
+AsmIdtVectorBegin:\r
+ IDT_MACRO $0\r
+ IDT_MACRO $1\r
+ IDT_MACRO $2\r
+ IDT_MACRO $3\r
+ IDT_MACRO $4\r
+ IDT_MACRO $5\r
+ IDT_MACRO $6\r
+ IDT_MACRO $7\r
+ IDT_MACRO $8\r
+ IDT_MACRO $9\r
+ IDT_MACRO $10\r
+ IDT_MACRO $11\r
+ IDT_MACRO $12\r
+ IDT_MACRO $13\r
+ IDT_MACRO $14\r
+ IDT_MACRO $15\r
+ IDT_MACRO $16\r
+ IDT_MACRO $17\r
+ IDT_MACRO $18\r
+ IDT_MACRO $19\r
+ IDT_MACRO $20\r
+ IDT_MACRO $21\r
+ IDT_MACRO $22\r
+ IDT_MACRO $23\r
+ IDT_MACRO $24\r
+ IDT_MACRO $25\r
+ IDT_MACRO $26\r
+ IDT_MACRO $27\r
+ IDT_MACRO $28\r
+ IDT_MACRO $29\r
+ IDT_MACRO $30\r
+ IDT_MACRO $31\r
+AsmIdtVectorEnd:\r
+\r
HookAfterStubHeaderBegin:\r
.byte 0x6a # push\r
-VectorNum:\r
+PatchVectorNum:\r
.byte 0 # 0 will be fixed \r
- pushq %rax\r
- .byte 0x48, 0xB8 # movq ASM_PFX(HookAfterStubHeaderEnd), %rax\r
- .quad ASM_PFX(HookAfterStubHeaderEnd)\r
- jmp *%rax\r
+ .byte 0xe9 # jmp ASM_PFX(HookAfterStubHeaderEnd)\r
+PatchFuncAddress:\r
+ .set HOOK_ADDRESS, ASM_PFX(HookAfterStubHeaderEnd) - . - 4\r
+ .long HOOK_ADDRESS # will be fixed\r
ASM_GLOBAL ASM_PFX(HookAfterStubHeaderEnd)\r
ASM_PFX(HookAfterStubHeaderEnd):\r
+ pushq %rax\r
movq %rsp, %rax\r
andl $0x0fffffff0, %esp # make sure 16-byte aligned for exception context\r
subq $0x18, %rsp # reserve room for filling exception data later\r
pushq %rcx\r
movq 8(%rax), %rcx\r
- pushq %rax\r
- movabsl ASM_PFX(mErrorCodeFlag), %eax\r
- bt %ecx, %eax\r
- popq %rax\r
+ bt %ecx, ASM_PFX(mErrorCodeFlag)(%rip)\r
jnc NoErrorData\r
pushq (%rsp) # push additional rcx to make stack alignment\r
NoErrorData:\r
xchgq (%rsp), %rcx # restore rcx, save Exception Number in stack\r
- pushq (%rax) # push rax into stack to keep code consistence\r
+ movq (%rax), %rax # restore rax\r
\r
#---------------------------------------;\r
# CommonInterruptEntry ;\r
ASM_GLOBAL ASM_PFX(CommonInterruptEntry)\r
ASM_PFX(CommonInterruptEntry):\r
cli\r
- popq %rax\r
#\r
# All interrupt handlers are invoked through interrupt gates, so\r
# IF flag automatically cleared at the entry point\r
cmp $32, %ecx # Intel reserved vector for exceptions?\r
jae NoErrorCode\r
pushq %rax\r
- movabsl ASM_PFX(mErrorCodeFlag), %eax\r
+ movl ASM_PFX(mErrorCodeFlag)(%rip), %eax\r
bt %ecx, %eax\r
popq %rax\r
jc CommonInterruptEntry_al_0000\r
\r
DoReturn:\r
pushq %rax\r
- movabsq ASM_PFX(mDoFarReturnFlag), %rax\r
+ movq ASM_PFX(mDoFarReturnFlag)(%rip), %rax\r
cmpq $0, %rax # Check if need to do far return instead of IRET\r
popq %rax\r
jz DoIret\r
movq (%rax), %rax # restore rax\r
popfq # restore EFLAGS\r
.byte 0x48 # prefix to composite "retq" with next "retf"\r
+#ifdef __APPLE__\r
+ .byte 0xCB\r
+#else\r
retf # far return\r
+#endif\r
DoIret:\r
iretq\r
\r
# comments here for definition of address map\r
ASM_GLOBAL ASM_PFX(AsmGetTemplateAddressMap)\r
ASM_PFX(AsmGetTemplateAddressMap):\r
+ pushq %rbp\r
+ movq %rsp, %rbp\r
+\r
+ leaq AsmIdtVectorBegin(%rip), %rax\r
+ movq %rax, (%rcx)\r
+ .set ENTRY_SIZE, ASM_PFX(HookAfterStubHeaderEnd) - HookAfterStubHeaderBegin\r
+ movq $(ENTRY_SIZE), 0x08(%rcx)\r
+ leaq HookAfterStubHeaderBegin(%rip), %rax\r
+ movq %rax, 0x10(%rcx)\r
\r
- movabsq $Exception0Handle, %rax\r
- movq %rax, (%rcx)\r
- movq $(Exception1Handle - Exception0Handle), 0x08(%rcx)\r
- movabsq $HookAfterStubHeaderBegin, %rax\r
- movq %rax, 0x10(%rcx)\r
- ret\r
+ popq %rbp\r
+ ret\r
\r
#-------------------------------------------------------------------------------------\r
-# AsmVectorNumFixup (*VectorBase, VectorNum);\r
+# VOID\r
+# EFIAPI\r
+# AsmVectorNumFixup (\r
+# IN VOID *NewVectorAddr, // RCX\r
+# IN UINT8 VectorNum // RDX\r
+# IN VOID *OldVectorAddr, // R8\r
+# );\r
#-------------------------------------------------------------------------------------\r
ASM_GLOBAL ASM_PFX(AsmVectorNumFixup)\r
ASM_PFX(AsmVectorNumFixup):\r
- movq %rdx, %rax\r
- movb %al, (VectorNum - HookAfterStubHeaderBegin)(%rcx)\r
- ret\r
+ pushq %rbp\r
+ movq %rsp, %rbp\r
+\r
+# Patch vector #\r
+ movb %dl, (PatchVectorNum - HookAfterStubHeaderBegin)(%rcx)\r
+\r
+# Patch Function address\r
+ subq %rcx, %r8 # Calculate the offset value\r
+ movl (PatchFuncAddress - HookAfterStubHeaderBegin)(%rcx), %eax\r
+ addq %r8, %rax\r
+ movl %eax, (PatchFuncAddress - HookAfterStubHeaderBegin)(%rcx)\r
+\r
+ popq %rbp\r
+ ret\r
\r
#END\r
\r
projects / mirror_edk2.git / blobdiff