--- /dev/null
+#/**@file\r
+# Low leve x64 specific debug support functions.\r
+#\r
+# Copyright (c) 2006, Intel Corporation\r
+# All rights reserved. This program and the accompanying materials\r
+# are licensed and made available under the terms and conditions of the BSD License\r
+# which accompanies this distribution. The full text of the license may be found at\r
+# http://opensource.org/licenses/bsd-license.php\r
+#\r
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+#\r
+#**/\r
+\r
+.globl _OrigVector\r
+.globl _InterruptEntryStub\r
+.globl _StubSize\r
+.globl _CommonIdtEntry\r
+.globl _FxStorSupport\r
+\r
+_AppEsp: .long 0x11111111 # ?\r
+_DebugEsp: .long 0x22222222 # ?\r
+_ExtraPush: .long 0x33333333 # ?\r
+_ExceptData: .long 0x44444444 # ?\r
+_Eflags: .long 0x55555555 # ?\r
+_OrigVector: .long 0x66666666 # ?\r
+_StubSize: .long _InterruptEntryStubEnd - _InterruptEntryStub\r
+\r
+.globl _FxStorSupport\r
+_FxStorSupport:\r
+ ret\r
+\r
+.globl _GetIdtr\r
+_GetIdtr:\r
+ ret\r
+\r
+.globl _WriteInterruptFlag\r
+_WriteInterruptFlag:\r
+ ret\r
+\r
+.globl _Vect2Desc\r
+_Vect2Desc:\r
+ ret\r
+\r
+.globl _InterruptEntryStub\r
+_InterruptEntryStub:\r
+ ret\r
+\r
+.globl _InterruptEntryStubEnd\r
+_InterruptEntryStubEnd:\r
+ ret\r
+\r
+.globl _CommonIdtEntry\r
+_CommonIdtEntry:\r
+ ret\r
+\r
+PhonyIretd:\r
+ iret\r
--- /dev/null
+;/** @file\r
+; Low level x64 routines used by the debug support driver.\r
+;\r
+; Copyright (c) 2007 - 2008, Intel Corporation. <BR>\r
+; All rights reserved. This program and the accompanying materials\r
+; are licensed and made available under the terms and conditions of the BSD License\r
+; which accompanies this distribution. The full text of the license may be found at\r
+; http://opensource.org/licenses/bsd-license.php\r
+;\r
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+;\r
+;**/\r
+\r
+EXCPT64_DIVIDE_ERROR EQU 0\r
+EXCPT64_DEBUG EQU 1\r
+EXCPT64_NMI EQU 2\r
+EXCPT64_BREAKPOINT EQU 3\r
+EXCPT64_OVERFLOW EQU 4\r
+EXCPT64_BOUND EQU 5\r
+EXCPT64_INVALID_OPCODE EQU 6\r
+EXCPT64_DOUBLE_FAULT EQU 8\r
+EXCPT64_INVALID_TSS EQU 10\r
+EXCPT64_SEG_NOT_PRESENT EQU 11\r
+EXCPT64_STACK_FAULT EQU 12\r
+EXCPT64_GP_FAULT EQU 13\r
+EXCPT64_PAGE_FAULT EQU 14\r
+EXCPT64_FP_ERROR EQU 16\r
+EXCPT64_ALIGNMENT_CHECK EQU 17\r
+EXCPT64_MACHINE_CHECK EQU 18\r
+EXCPT64_SIMD EQU 19\r
+\r
+FXSTOR_FLAG EQU 01000000h ; bit cpuid 24 of feature flags\r
+\r
+;; The FXSTOR and FXRSTOR commands are used for saving and restoring the x87,\r
+;; MMX, SSE, SSE2, etc registers. The initialization of the debugsupport driver\r
+;; MUST check the CPUID feature flags to see that these instructions are available\r
+;; and fail to init if they are not.\r
+\r
+;; fxstor [rdi]\r
+FXSTOR_RDI MACRO\r
+ db 0fh, 0aeh, 00000111y ; mod = 00, reg/op = 000, r/m = 111 = [rdi]\r
+ENDM\r
+\r
+;; fxrstor [rsi]\r
+FXRSTOR_RSI MACRO\r
+ db 0fh, 0aeh, 00001110y ; mod = 00, reg/op = 001, r/m = 110 = [rsi]\r
+ENDM\r
+\r
+data SEGMENT\r
+\r
+public OrigVector, InterruptEntryStub, StubSize, CommonIdtEntry, FxStorSupport\r
+\r
+StubSize dd InterruptEntryStubEnd - InterruptEntryStub\r
+AppRsp dq 1111111111111111h ; ?\r
+DebugRsp dq 2222222222222222h ; ?\r
+ExtraPush dq 3333333333333333h ; ?\r
+ExceptData dq 4444444444444444h ; ?\r
+Rflags dq 5555555555555555h ; ?\r
+OrigVector dq 6666666666666666h ; ?\r
+\r
+;; The declarations below define the memory region that will be used for the debug stack.\r
+;; The context record will be built by pushing register values onto this stack.\r
+;; It is imparitive that alignment be carefully managed, since the FXSTOR and\r
+;; FXRSTOR instructions will GP fault if their memory operand is not 16 byte aligned.\r
+;;\r
+;; The stub will switch stacks from the application stack to the debuger stack\r
+;; and pushes the exception number.\r
+;;\r
+;; Then we building the context record on the stack. Since the stack grows down,\r
+;; we push the fields of the context record from the back to the front. There\r
+;; are 336 bytes of stack used prior allocating the 512 bytes of stack to be\r
+;; used as the memory buffer for the fxstor instruction. Therefore address of\r
+;; the buffer used for the FXSTOR instruction is &Eax - 336 - 512, which\r
+;; must be 16 byte aligned.\r
+;;\r
+;; We carefully locate the stack to make this happen.\r
+;;\r
+;; For reference, the context structure looks like this:\r
+;; struct {\r
+;; UINT64 ExceptionData;\r
+;; FX_SAVE_STATE_X64 FxSaveState; // 512 bytes, must be 16 byte aligned\r
+;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r
+;; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;\r
+;; UINT64 RFlags;\r
+;; UINT64 Ldtr, Tr;\r
+;; UINT64 Gdtr[2], Idtr[2];\r
+;; UINT64 Rip;\r
+;; UINT64 Gs, Fs, Es, Ds, Cs, Ss;\r
+;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;\r
+;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;\r
+;; } SYSTEM_CONTEXT_X64; // 64 bit system context record\r
+\r
+align 16\r
+DebugStackEnd db "DbgStkEnd >>>>>>" ;; 16 byte long string - must be 16 bytes to preserve alignment\r
+ dd 1ffch dup (000000000h) ;; 32K should be enough stack\r
+ ;; This allocation is coocked to insure\r
+ ;; that the the buffer for the FXSTORE instruction\r
+ ;; will be 16 byte aligned also.\r
+ ;;\r
+ExceptionNumber dq ? ;; first entry will be the vector number pushed by the stub\r
+\r
+DebugStackBegin db "<<<< DbgStkBegin" ;; initial debug ESP == DebugStackBegin, set in stub\r
+\r
+data ENDS\r
+\r
+text SEGMENT\r
+\r
+externdef InterruptDistrubutionHub:near\r
+\r
+;------------------------------------------------------------------------------\r
+; VOID\r
+; EfiWbinvd (\r
+; VOID\r
+; )\r
+;\r
+; Abstract: Writeback and invalidate cache\r
+;\r
+EfiWbinvd PROC PUBLIC\r
+ wbinvd\r
+ ret\r
+EfiWbinvd ENDP\r
+\r
+;------------------------------------------------------------------------------\r
+; BOOLEAN\r
+; FxStorSupport (\r
+; void\r
+; )\r
+;\r
+; Abstract: Returns TRUE if FxStor instructions are supported\r
+;\r
+FxStorSupport PROC PUBLIC\r
+\r
+;\r
+; cpuid corrupts rbx which must be preserved per the C calling convention\r
+;\r
+ push rbx\r
+ mov rax, 1\r
+ cpuid\r
+ mov eax, edx\r
+ and rax, FXSTOR_FLAG\r
+ shr rax, 24\r
+ pop rbx\r
+ ret\r
+FxStorSupport ENDP\r
+\r
+\r
+;------------------------------------------------------------------------------\r
+; DESCRIPTOR *\r
+; GetIdtr (\r
+; void\r
+; )\r
+;\r
+; Abstract: Returns physical address of IDTR\r
+;\r
+GetIdtr PROC PUBLIC\r
+ push rbp\r
+ mov rbp, rsp\r
+\r
+ sidt QWORD PTR [rbp - 0ah]\r
+ mov rax, QWORD PTR [rbp - 8h]\r
+\r
+ mov rsp, rbp\r
+ pop rbp\r
+ ret\r
+GetIdtr ENDP\r
+\r
+\r
+;------------------------------------------------------------------------------\r
+; BOOLEAN\r
+; WriteInterruptFlag (\r
+; BOOLEAN NewState // rcx\r
+; )\r
+;\r
+; Abstract: Programs interrupt flag to the requested state and returns previous\r
+; state.\r
+;\r
+WriteInterruptFlag PROC PUBLIC\r
+\r
+ pushfq\r
+ pop rax\r
+ and rax, 200h\r
+ shr rax, 9\r
+ cmp rcx, 0\r
+ jnz EnableIF\r
+ cli\r
+ ret\r
+EnableIF:\r
+ sti\r
+ ret\r
+\r
+WriteInterruptFlag ENDP\r
+\r
+\r
+\r
+;------------------------------------------------------------------------------\r
+; void\r
+; Vect2Desc (\r
+; DESCRIPTOR * DestDesc, // rcx\r
+; void (*Vector) (void) // rdx\r
+; )\r
+;\r
+; Abstract: Encodes an IDT descriptor with the given physical address\r
+;\r
+Vect2Desc PROC PUBLIC\r
+\r
+ mov rax, rdx\r
+ mov word ptr [rcx], ax ; write bits 15..0 of offset\r
+ mov dx, cs\r
+ mov word ptr [rcx+2], dx ; SYS_CODE_SEL from GDT\r
+ mov word ptr [rcx+4], 0e00h OR 8000h ; type = 386 interrupt gate, present\r
+ shr rax, 16\r
+ mov word ptr [rcx+6], ax ; write bits 31..16 of offset\r
+ shr rax, 16\r
+ mov dword ptr [rcx+8], eax ; write bits 63..32 of offset\r
+\r
+ ret\r
+\r
+Vect2Desc ENDP\r
+\r
+\r
+\r
+;------------------------------------------------------------------------------\r
+; InterruptEntryStub\r
+;\r
+; Abstract: This code is not a function, but is a small piece of code that is\r
+; copied and fixed up once for each IDT entry that is hooked.\r
+;\r
+InterruptEntryStub::\r
+ push 0 ; push vector number - will be modified before installed\r
+ db 0e9h ; jump rel32\r
+ dd 0 ; fixed up to relative address of CommonIdtEntry\r
+InterruptEntryStubEnd:\r
+\r
+\r
+\r
+;------------------------------------------------------------------------------\r
+; CommonIdtEntry\r
+;\r
+; Abstract: This code is not a function, but is the common part for all IDT\r
+; vectors.\r
+;\r
+CommonIdtEntry::\r
+;;\r
+;; At this point, the stub has saved the current application stack esp into AppRsp\r
+;; and switched stacks to the debug stack, where it pushed the vector number\r
+;;\r
+;; The application stack looks like this:\r
+;;\r
+;; ...\r
+;; (last application stack entry)\r
+;; [16 bytes alignment, do not care it]\r
+;; SS from interrupted task\r
+;; RSP from interrupted task\r
+;; rflags from interrupted task\r
+;; CS from interrupted task\r
+;; RIP from interrupted task\r
+;; Error code <-------------------- Only present for some exeption types\r
+;;\r
+;; Vector Number <----------------- pushed in our IDT Entry\r
+;;\r
+\r
+\r
+;; The stub switched us to the debug stack and pushed the interrupt number.\r
+;;\r
+;; Next, construct the context record. It will be build on the debug stack by\r
+;; pushing the registers in the correct order so as to create the context structure\r
+;; on the debug stack. The context record must be built from the end back to the\r
+;; beginning because the stack grows down...\r
+;\r
+;; For reference, the context record looks like this:\r
+;;\r
+;; typedef\r
+;; struct {\r
+;; UINT64 ExceptionData;\r
+;; FX_SAVE_STATE_X64 FxSaveState;\r
+;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r
+;; UINT64 Cr0, Cr2, Cr3, Cr4, Cr8;\r
+;; UINT64 RFlags;\r
+;; UINT64 Ldtr, Tr;\r
+;; UINT64 Gdtr[2], Idtr[2];\r
+;; UINT64 Rip;\r
+;; UINT64 Gs, Fs, Es, Ds, Cs, Ss;\r
+;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;\r
+;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;\r
+;; } SYSTEM_CONTEXT_X64; // 64 bit system context record\r
+\r
+;; NOTE: we save rsp here to prevent compiler put rip reference cause error AppRsp\r
+ push rax\r
+ mov rax, qword ptr [rsp][8] ; save vector number\r
+ mov ExceptionNumber, rax ; save vector number\r
+ pop rax\r
+ add rsp, 8 ; pop vector number\r
+ mov AppRsp, rsp ; save stack top\r
+ mov rsp, offset DebugStackBegin ; switch to debugger stack\r
+ sub rsp, 8 ; leave space for vector number\r
+\r
+;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;\r
+;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;\r
+ push r15\r
+ push r14\r
+ push r13\r
+ push r12\r
+ push r11\r
+ push r10\r
+ push r9\r
+ push r8\r
+ push rax\r
+ push rcx\r
+ push rdx\r
+ push rbx\r
+ push rsp\r
+ push rbp\r
+ push rsi\r
+ push rdi\r
+\r
+;; Save interrupt state rflags register...\r
+ pushfq\r
+ pop rax\r
+ mov qword ptr Rflags, rax\r
+\r
+;; We need to determine if any extra data was pushed by the exception, and if so, save it\r
+;; To do this, we check the exception number pushed by the stub, and cache the\r
+;; result in a variable since we'll need this again.\r
+ cmp ExceptionNumber, EXCPT64_DOUBLE_FAULT\r
+ jz ExtraPushOne\r
+ cmp ExceptionNumber, EXCPT64_INVALID_TSS\r
+ jz ExtraPushOne\r
+ cmp ExceptionNumber, EXCPT64_SEG_NOT_PRESENT\r
+ jz ExtraPushOne\r
+ cmp ExceptionNumber, EXCPT64_STACK_FAULT\r
+ jz ExtraPushOne\r
+ cmp ExceptionNumber, EXCPT64_GP_FAULT\r
+ jz ExtraPushOne\r
+ cmp ExceptionNumber, EXCPT64_PAGE_FAULT\r
+ jz ExtraPushOne\r
+ cmp ExceptionNumber, EXCPT64_ALIGNMENT_CHECK\r
+ jz ExtraPushOne\r
+ mov ExtraPush, 0\r
+ mov ExceptData, 0\r
+ jmp ExtraPushDone\r
+ExtraPushOne:\r
+ mov ExtraPush, 1\r
+\r
+;; If there's some extra data, save it also, and modify the saved AppRsp to effectively\r
+;; pop this value off the application's stack.\r
+ mov rax, AppRsp\r
+ mov rbx, [rax]\r
+ mov ExceptData, rbx\r
+ add rax, 8\r
+ mov AppRsp, rax\r
+\r
+ExtraPushDone:\r
+\r
+;; The "push" above pushed the debug stack rsp. Since what we're actually doing\r
+;; is building the context record on the debug stack, we need to save the pushed\r
+;; debug RSP, and replace it with the application's last stack entry...\r
+ mov rax, [rsp + 24]\r
+ mov DebugRsp, rax\r
+ mov rax, AppRsp\r
+ add rax, 40\r
+ ; application stack has ss, rsp, rflags, cs, & rip, so\r
+ ; last actual application stack entry is\r
+ ; 40 bytes into the application stack.\r
+ mov [rsp + 24], rax\r
+\r
+;; continue building context record\r
+;; UINT64 Gs, Fs, Es, Ds, Cs, Ss; insure high 16 bits of each is zero\r
+ mov rax, ss\r
+ push rax\r
+\r
+ ; CS from application is one entry back in application stack\r
+ mov rax, AppRsp\r
+ movzx rax, word ptr [rax + 8]\r
+ push rax\r
+\r
+ mov rax, ds\r
+ push rax\r
+ mov rax, es\r
+ push rax\r
+ mov rax, fs\r
+ push rax\r
+ mov rax, gs\r
+ push rax\r
+\r
+;; UINT64 Rip;\r
+ ; Rip from application is on top of application stack\r
+ mov rax, AppRsp\r
+ push qword ptr [rax]\r
+\r
+;; UINT64 Gdtr[2], Idtr[2];\r
+ push 0\r
+ push 0\r
+ sidt fword ptr [rsp]\r
+ push 0\r
+ push 0\r
+ sgdt fword ptr [rsp]\r
+\r
+;; UINT64 Ldtr, Tr;\r
+ xor rax, rax\r
+ str ax\r
+ push rax\r
+ sldt ax\r
+ push rax\r
+\r
+;; UINT64 RFlags;\r
+;; Rflags from application is two entries back in application stack\r
+ mov rax, AppRsp\r
+ push qword ptr [rax + 16]\r
+\r
+;; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;\r
+;; insure FXSAVE/FXRSTOR is enabled in CR4...\r
+;; ... while we're at it, make sure DE is also enabled...\r
+ mov rax, cr8\r
+ push rax\r
+ mov rax, cr4\r
+ or rax, 208h\r
+ mov cr4, rax\r
+ push rax\r
+ mov rax, cr3\r
+ push rax\r
+ mov rax, cr2\r
+ push rax\r
+ push 0\r
+ mov rax, cr0\r
+ push rax\r
+\r
+;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r
+ mov rax, dr7\r
+ push rax\r
+;; clear Dr7 while executing debugger itself\r
+ xor rax, rax\r
+ mov dr7, rax\r
+\r
+ mov rax, dr6\r
+ push rax\r
+;; insure all status bits in dr6 are clear...\r
+ xor rax, rax\r
+ mov dr6, rax\r
+\r
+ mov rax, dr3\r
+ push rax\r
+ mov rax, dr2\r
+ push rax\r
+ mov rax, dr1\r
+ push rax\r
+ mov rax, dr0\r
+ push rax\r
+\r
+;; FX_SAVE_STATE_X64 FxSaveState;\r
+ sub rsp, 512\r
+ mov rdi, rsp\r
+ ; IMPORTANT!! The debug stack has been carefully constructed to\r
+ ; insure that rsp and rdi are 16 byte aligned when we get here.\r
+ ; They MUST be. If they are not, a GP fault will occur.\r
+ FXSTOR_RDI\r
+\r
+;; UINT64 ExceptionData;\r
+ mov rax, ExceptData\r
+ push rax\r
+\r
+; call to C code which will in turn call registered handler\r
+; pass in the vector number\r
+ mov rdx, rsp\r
+ mov rcx, ExceptionNumber\r
+ sub rsp, 40\r
+ call InterruptDistrubutionHub\r
+ add rsp, 40\r
+\r
+; restore context...\r
+;; UINT64 ExceptionData;\r
+ add rsp, 8\r
+\r
+;; FX_SAVE_STATE_X64 FxSaveState;\r
+ mov rsi, rsp\r
+ FXRSTOR_RSI\r
+ add rsp, 512\r
+\r
+;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r
+ pop rax\r
+ mov dr0, rax\r
+ pop rax\r
+ mov dr1, rax\r
+ pop rax\r
+ mov dr2, rax\r
+ pop rax\r
+ mov dr3, rax\r
+;; skip restore of dr6. We cleared dr6 during the context save.\r
+ add rsp, 8\r
+ pop rax\r
+ mov dr7, rax\r
+\r
+;; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;\r
+ pop rax\r
+ mov cr0, rax\r
+ add rsp, 8\r
+ pop rax\r
+ mov cr2, rax\r
+ pop rax\r
+ mov cr3, rax\r
+ pop rax\r
+ mov cr4, rax\r
+ pop rax\r
+ mov cr8, rax\r
+\r
+;; UINT64 RFlags;\r
+ mov rax, AppRsp\r
+ pop qword ptr [rax + 16]\r
+\r
+;; UINT64 Ldtr, Tr;\r
+;; UINT64 Gdtr[2], Idtr[2];\r
+;; Best not let anyone mess with these particular registers...\r
+ add rsp, 48\r
+\r
+;; UINT64 Rip;\r
+ pop qword ptr [rax]\r
+\r
+;; UINT64 Gs, Fs, Es, Ds, Cs, Ss;\r
+;; NOTE - modified segment registers could hang the debugger... We\r
+;; could attempt to insulate ourselves against this possibility,\r
+;; but that poses risks as well.\r
+;;\r
+\r
+ pop rax\r
+ ; mov gs, rax\r
+ pop rax\r
+ ; mov fs, rax\r
+ pop rax\r
+ mov es, rax\r
+ pop rax\r
+ mov ds, rax\r
+ mov rax, AppRsp\r
+ pop qword ptr [rax + 8]\r
+ pop rax\r
+ mov ss, rax\r
+\r
+;; The next stuff to restore is the general purpose registers that were pushed\r
+;; using the "push" instruction.\r
+;;\r
+;; The value of RSP as stored in the context record is the application RSP\r
+;; including the 5 entries on the application stack caused by the exception\r
+;; itself. It may have been modified by the debug agent, so we need to\r
+;; determine if we need to relocate the application stack.\r
+\r
+ mov rbx, [rsp + 24] ; move the potentially modified AppRsp into rbx\r
+ mov rax, AppRsp\r
+ add rax, 40\r
+ cmp rbx, rax\r
+ je NoAppStackMove\r
+\r
+ mov rax, AppRsp\r
+ mov rcx, [rax] ; RIP\r
+ mov [rbx], rcx\r
+\r
+ mov rcx, [rax + 8] ; CS\r
+ mov [rbx + 8], rcx\r
+\r
+ mov rcx, [rax + 16] ; RFLAGS\r
+ mov [rbx + 16], rcx\r
+\r
+ mov rcx, [rax + 24] ; RSP\r
+ mov [rbx + 24], rcx\r
+\r
+ mov rcx, [rax + 32] ; SS\r
+ mov [rbx + 32], rcx\r
+\r
+ mov rax, rbx ; modify the saved AppRsp to the new AppRsp\r
+ mov AppRsp, rax\r
+NoAppStackMove:\r
+ mov rax, DebugRsp ; restore the DebugRsp on the debug stack\r
+ ; so our "pop" will not cause a stack switch\r
+ mov [rsp + 24], rax\r
+\r
+ cmp ExceptionNumber, 068h\r
+ jne NoChain\r
+\r
+Chain:\r
+\r
+;; Restore rflags so when we chain, the flags will be exactly as if we were never here.\r
+;; We gin up the stack to do an iretq so we can get ALL the flags.\r
+ mov rax, AppRsp\r
+ mov rbx, [rax + 40]\r
+ push rbx\r
+ mov rax, ss\r
+ push rax\r
+ mov rax, rsp\r
+ add rax, 16\r
+ push rax\r
+ mov rax, AppRsp\r
+ mov rbx, [rax + 16]\r
+ and rbx, NOT 300h ; special handling for IF and TF\r
+ push rbx\r
+ mov rax, cs\r
+ push rax\r
+ mov rax, offset PhonyIretq\r
+ push rax\r
+ iretq\r
+PhonyIretq:\r
+\r
+;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;\r
+;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;\r
+ pop rdi\r
+ pop rsi\r
+ pop rbp\r
+ pop rsp\r
+ pop rbx\r
+ pop rdx\r
+ pop rcx\r
+ pop rax\r
+ pop r8\r
+ pop r9\r
+ pop r10\r
+ pop r11\r
+ pop r12\r
+ pop r13\r
+ pop r14\r
+ pop r15\r
+\r
+;; Switch back to application stack\r
+ mov rsp, AppRsp\r
+\r
+;; Jump to original handler\r
+ jmp OrigVector\r
+\r
+NoChain:\r
+;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;\r
+;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;\r
+ pop rdi\r
+ pop rsi\r
+ pop rbp\r
+ pop rsp\r
+ pop rbx\r
+ pop rdx\r
+ pop rcx\r
+ pop rax\r
+ pop r8\r
+ pop r9\r
+ pop r10\r
+ pop r11\r
+ pop r12\r
+ pop r13\r
+ pop r14\r
+ pop r15\r
+\r
+;; Switch back to application stack\r
+ mov rsp, AppRsp\r
+\r
+;; We're outa here...\r
+ iretq\r
+text ENDS\r
+\r
+END\r
+\r
+\r
+\r
--- /dev/null
+/**@file\r
+ X64 specific debug support functions\r
+\r
+Copyright (c) 2006 - 2007, Intel Corporation\r
+All rights reserved. This program and the accompanying materials\r
+are licensed and made available under the terms and conditions of the BSD License\r
+which accompanies this distribution. The full text of the license may be found at\r
+http://opensource.org/licenses/bsd-license.php\r
+\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+//\r
+// private header files\r
+//\r
+#include "plDebugSupport.h"\r
+\r
+//\r
+// This the global main table to keep track of the interrupts\r
+//\r
+IDT_ENTRY *IdtEntryTable = NULL;\r
+DESCRIPTOR NullDesc = {0, 0};\r
+\r
+STATIC\r
+EFI_STATUS\r
+CreateEntryStub (\r
+ IN EFI_EXCEPTION_TYPE ExceptionType,\r
+ OUT VOID **Stub\r
+ )\r
+/*++\r
+\r
+Routine Description: Allocate pool for a new IDT entry stub. Copy the generic\r
+ stub into the new buffer and fixup the vector number and jump target address.\r
+\r
+Arguments:\r
+ ExceptionType - This is the exception type that the new stub will be created\r
+ for.\r
+ Stub - On successful exit, *Stub contains the newly allocated entry stub.\r
+Returns:\r
+ Typically EFI_SUCCESS\r
+ other possibilities are passed through from AllocatePool\r
+\r
+--*/\r
+{\r
+ UINT8 *StubCopy;\r
+\r
+ StubCopy = *Stub;\r
+\r
+ //\r
+ // Fixup the stub code for this vector\r
+ //\r
+\r
+ // The stub code looks like this:\r
+ //\r
+ // 00000000 6A 00 push 0 ; push vector number - will be modified before installed\r
+ // 00000002 E9 db 0e9h ; jump rel32\r
+ // 00000003 00000000 dd 0 ; fixed up to relative address of CommonIdtEntry\r
+ //\r
+\r
+ //\r
+ // poke in the exception type so the second push pushes the exception type\r
+ //\r
+ StubCopy[0x1] = (UINT8) ExceptionType;\r
+\r
+ //\r
+ // fixup the jump target to point to the common entry\r
+ //\r
+ *(UINT32 *) &StubCopy[0x3] = (UINT32)((UINTN) CommonIdtEntry - (UINTN) &StubCopy[StubSize]);\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+STATIC\r
+EFI_STATUS\r
+HookEntry (\r
+ IN EFI_EXCEPTION_TYPE ExceptionType,\r
+ IN VOID (*NewCallback) ()\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ Creates a nes entry stub. Then saves the current IDT entry and replaces it\r
+ with an interrupt gate for the new entry point. The IdtEntryTable is updated\r
+ with the new registered function.\r
+\r
+ This code executes in boot services context. The stub entry executes in interrupt\r
+ context.\r
+\r
+Arguments:\r
+ ExceptionType - specifies which vector to hook.\r
+ NewCallback - a pointer to the new function to be registered.\r
+\r
+Returns:\r
+ EFI_SUCCESS\r
+ Other possibilities are passed through by CreateEntryStub\r
+\r
+--*/\r
+{\r
+ BOOLEAN OldIntFlagState;\r
+ EFI_STATUS Status;\r
+\r
+ Status = CreateEntryStub (ExceptionType, (VOID **) &IdtEntryTable[ExceptionType].StubEntry);\r
+ if (Status == EFI_SUCCESS) {\r
+ OldIntFlagState = WriteInterruptFlag (0);\r
+ ReadIdt (ExceptionType, &(IdtEntryTable[ExceptionType].OrigDesc));\r
+\r
+ ((UINT16 *) &IdtEntryTable[ExceptionType].OrigVector)[0] = ((UINT16 *) &IdtEntryTable[ExceptionType].OrigDesc.Low)[0];\r
+ ((UINT16 *) &IdtEntryTable[ExceptionType].OrigVector)[1] = ((UINT16 *) &IdtEntryTable[ExceptionType].OrigDesc.Low)[3];\r
+ ((UINT32 *) &IdtEntryTable[ExceptionType].OrigVector)[1] = ((UINT32 *) &IdtEntryTable[ExceptionType].OrigDesc.High)[0];\r
+\r
+ Vect2Desc (&IdtEntryTable[ExceptionType].NewDesc, IdtEntryTable[ExceptionType].StubEntry);\r
+ IdtEntryTable[ExceptionType].RegisteredCallback = NewCallback;\r
+ WriteIdt (ExceptionType, &(IdtEntryTable[ExceptionType].NewDesc));\r
+ WriteInterruptFlag (OldIntFlagState);\r
+ }\r
+\r
+ return Status;\r
+}\r
+\r
+STATIC\r
+EFI_STATUS\r
+UnhookEntry (\r
+ IN EFI_EXCEPTION_TYPE ExceptionType\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ Undoes HookEntry. This code executes in boot services context.\r
+\r
+Arguments:\r
+ ExceptionType - specifies which entry to unhook\r
+\r
+Returns:\r
+ EFI_SUCCESS\r
+\r
+--*/\r
+{\r
+ BOOLEAN OldIntFlagState;\r
+\r
+ OldIntFlagState = WriteInterruptFlag (0);\r
+ WriteIdt (ExceptionType, &(IdtEntryTable[ExceptionType].OrigDesc));\r
+ WriteInterruptFlag (OldIntFlagState);\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+EFI_STATUS\r
+ManageIdtEntryTable (\r
+ VOID (*NewCallback)(),\r
+ EFI_EXCEPTION_TYPE ExceptionType\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ This is the main worker function that manages the state of the interrupt\r
+ handlers. It both installs and uninstalls interrupt handlers based on the\r
+ value of NewCallback. If NewCallback is NULL, then uninstall is indicated.\r
+ If NewCallback is non-NULL, then install is indicated.\r
+\r
+Arguments:\r
+ NewCallback - If non-NULL, NewCallback specifies the new handler to register.\r
+ If NULL, specifies that the previously registered handler should\r
+ be uninstalled.\r
+ ExceptionType - Indicates which entry to manage\r
+\r
+Returns:\r
+ EFI_SUCCESS\r
+ EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has\r
+ no handler registered for it\r
+ EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.\r
+\r
+ Other possible return values are passed through from UnHookEntry and HookEntry.\r
+\r
+--*/\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ Status = EFI_SUCCESS;\r
+\r
+ if (CompareDescriptor (&IdtEntryTable[ExceptionType].NewDesc, &NullDesc)) {\r
+ //\r
+ // we've already installed to this vector\r
+ //\r
+ if (NewCallback != NULL) {\r
+ //\r
+ // if the input handler is non-null, error\r
+ //\r
+ Status = EFI_ALREADY_STARTED;\r
+ } else {\r
+ Status = UnhookEntry (ExceptionType);\r
+ }\r
+ } else {\r
+ //\r
+ // no user handler installed on this vector\r
+ //\r
+ if (NewCallback == NULL) {\r
+ //\r
+ // if the input handler is null, error\r
+ //\r
+ Status = EFI_INVALID_PARAMETER;\r
+ } else {\r
+ Status = HookEntry (ExceptionType, NewCallback);\r
+ }\r
+ }\r
+\r
+ return Status;\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+GetMaximumProcessorIndex (\r
+ IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
+ OUT UINTN *MaxProcessorIndex\r
+ )\r
+/*++\r
+\r
+Routine Description: This is a DebugSupport protocol member function.\r
+\r
+Arguments:\r
+ This - The DebugSupport instance\r
+ MaxProcessorIndex - The maximuim supported processor index\r
+\r
+Returns:\r
+ Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0\r
+\r
+--*/\r
+{\r
+ *MaxProcessorIndex = 0;\r
+ return (EFI_SUCCESS);\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+RegisterPeriodicCallback (\r
+ IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
+ IN UINTN ProcessorIndex,\r
+ IN EFI_PERIODIC_CALLBACK PeriodicCallback\r
+ )\r
+/*++\r
+\r
+Routine Description: This is a DebugSupport protocol member function.\r
+\r
+Arguments:\r
+ This - The DebugSupport instance\r
+ ProcessorIndex - Which processor the callback applies to.\r
+ PeriodicCallback - Callback function\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS\r
+ EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has\r
+ no handler registered for it\r
+ EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.\r
+\r
+ Other possible return values are passed through from UnHookEntry and HookEntry.\r
+\r
+--*/\r
+{\r
+ return ManageIdtEntryTable (PeriodicCallback, SYSTEM_TIMER_VECTOR);\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+RegisterExceptionCallback (\r
+ IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
+ IN UINTN ProcessorIndex,\r
+ IN EFI_EXCEPTION_CALLBACK NewCallback,\r
+ IN EFI_EXCEPTION_TYPE ExceptionType\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ This is a DebugSupport protocol member function.\r
+\r
+ This code executes in boot services context.\r
+\r
+Arguments:\r
+ This - The DebugSupport instance\r
+ ProcessorIndex - Which processor the callback applies to.\r
+ NewCallback - Callback function\r
+ ExceptionType - Which exception to hook\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS\r
+ EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has\r
+ no handler registered for it\r
+ EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.\r
+\r
+ Other possible return values are passed through from UnHookEntry and HookEntry.\r
+\r
+--*/\r
+{\r
+ return ManageIdtEntryTable (NewCallback, ExceptionType);\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+InvalidateInstructionCache (\r
+ IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
+ IN UINTN ProcessorIndex,\r
+ IN VOID *Start,\r
+ IN UINT64 Length\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ This is a DebugSupport protocol member function.\r
+ Calls assembly routine to flush cache.\r
+\r
+Arguments:\r
+ This - The DebugSupport instance\r
+ ProcessorIndex - Which processor the callback applies to.\r
+ Start - Physical base of the memory range to be invalidated\r
+ Length - mininum number of bytes in instruction cache to invalidate\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS - always return success\r
+\r
+--*/\r
+{\r
+ AsmWbinvd ();\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+EFI_STATUS\r
+plInitializeDebugSupportDriver (\r
+ VOID\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ Initializes driver's handler registration database.\r
+\r
+ This code executes in boot services context.\r
+\r
+Arguments:\r
+ None\r
+\r
+Returns:\r
+ EFI_SUCCESS\r
+ EFI_UNSUPPORTED - if X64 processor does not support FXSTOR/FXRSTOR instructions,\r
+ the context save will fail, so these processor's are not supported.\r
+ EFI_OUT_OF_RESOURCES - not resource to finish initialization\r
+\r
+--*/\r
+{\r
+ EFI_EXCEPTION_TYPE ExceptionType;\r
+\r
+ if (!FxStorSupport ()) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ IdtEntryTable = AllocateZeroPool (sizeof (IDT_ENTRY) * NUM_IDT_ENTRIES);\r
+ if (IdtEntryTable == NULL) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ for (ExceptionType = 0; ExceptionType < NUM_IDT_ENTRIES; ExceptionType++) {\r
+ IdtEntryTable[ExceptionType].StubEntry = (DEBUG_PROC) (UINTN) AllocatePool (StubSize);\r
+ if (IdtEntryTable[ExceptionType].StubEntry == NULL) {\r
+ goto ErrorCleanup;\r
+ }\r
+\r
+ CopyMem ((VOID *)(UINTN)IdtEntryTable[ExceptionType].StubEntry, InterruptEntryStub, StubSize);\r
+ }\r
+ return EFI_SUCCESS;\r
+\r
+ErrorCleanup:\r
+\r
+ for (ExceptionType = 0; ExceptionType < NUM_IDT_ENTRIES; ExceptionType++) {\r
+ if (IdtEntryTable[ExceptionType].StubEntry != NULL) {\r
+ FreePool ((VOID *)(UINTN)IdtEntryTable[ExceptionType].StubEntry);\r
+ }\r
+ }\r
+ FreePool (IdtEntryTable);\r
+\r
+ return EFI_OUT_OF_RESOURCES;\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+plUnloadDebugSupportDriver (\r
+ IN EFI_HANDLE ImageHandle\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ This is the callback that is written to the LoadedImage protocol instance\r
+ on the image handle. It uninstalls all registered handlers and frees all entry\r
+ stub memory.\r
+\r
+ This code executes in boot services context.\r
+\r
+Arguments:\r
+ ImageHandle - The image handle of the unload handler\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS - always return success\r
+\r
+--*/\r
+{\r
+ EFI_EXCEPTION_TYPE ExceptionType;\r
+\r
+ for (ExceptionType = 0; ExceptionType < NUM_IDT_ENTRIES; ExceptionType++) {\r
+ ManageIdtEntryTable (NULL, ExceptionType);\r
+ }\r
+\r
+ FreePool (IdtEntryTable);\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+VOID\r
+InterruptDistrubutionHub (\r
+ EFI_EXCEPTION_TYPE ExceptionType,\r
+ EFI_SYSTEM_CONTEXT_IA32 *ContextRecord\r
+ )\r
+/*++\r
+\r
+Routine Description: Common piece of code that invokes the registered handlers.\r
+\r
+ This code executes in exception context so no efi calls are allowed.\r
+\r
+Arguments:\r
+ ExceptionType - exception type\r
+ ContextRecord - system context\r
+\r
+Returns:\r
+\r
+ None\r
+\r
+--*/\r
+{\r
+ if (IdtEntryTable[ExceptionType].RegisteredCallback != NULL) {\r
+ if (ExceptionType != SYSTEM_TIMER_VECTOR) {\r
+ IdtEntryTable[ExceptionType].RegisteredCallback (ExceptionType, ContextRecord);\r
+ } else {\r
+ OrigVector = IdtEntryTable[ExceptionType].OrigVector;\r
+ IdtEntryTable[ExceptionType].RegisteredCallback (ContextRecord);\r
+ }\r
+ }\r
+}\r
--- /dev/null
+/**@file\r
+ X64 specific debug support macros, typedefs and prototypes.\r
+\r
+Copyright (c) 2006, Intel Corporation \r
+All rights reserved. This program and the accompanying materials \r
+are licensed and made available under the terms and conditions of the BSD License \r
+which accompanies this distribution. The full text of the license may be found at \r
+http://opensource.org/licenses/bsd-license.php \r
+ \r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
+\r
+**/\r
+\r
+#ifndef _PLDEBUG_SUPPORT_H\r
+#define _PLDEBUG_SUPPORT_H\r
+\r
+\r
+#include <Uefi.h>\r
+\r
+#include <Protocol/DebugSupport.h>\r
+#include <Protocol/LoadedImage.h>\r
+\r
+#include <Library/DebugLib.h>\r
+#include <Library/UefiDriverEntryPoint.h>\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Library/MemoryAllocationLib.h>\r
+#include <Library/UefiBootServicesTableLib.h>\r
+#include <Library/BaseLib.h>\r
+\r
+#include <Library/PcdLib.h>\r
+#define NUM_IDT_ENTRIES 0x78\r
+#define SYSTEM_TIMER_VECTOR 0x68\r
+#define VECTOR_ENTRY_PAGES 1\r
+#define CopyDescriptor(Dest, Src) CopyMem ((Dest), (Src), sizeof (DESCRIPTOR))\r
+#define ZeroDescriptor(Dest) CopyDescriptor ((Dest), &NullDesc)\r
+#define ReadIdt(Vector, Dest) CopyDescriptor ((Dest), &((GetIdtr ())[(Vector)]))\r
+#define WriteIdt(Vector, Src) CopyDescriptor (&((GetIdtr ())[(Vector)]), (Src))\r
+#define CompareDescriptor(Desc1, Desc2) CompareMem ((Desc1), (Desc2), sizeof (DESCRIPTOR))\r
+#define EFI_ISA IsaX64\r
+#define FF_FXSR (1 << 24)\r
+\r
+typedef struct {\r
+ UINT64 Low;\r
+ UINT64 High;\r
+} DESCRIPTOR;\r
+\r
+typedef\r
+VOID\r
+(*DEBUG_PROC) (\r
+ VOID\r
+ );\r
+\r
+typedef struct {\r
+ DESCRIPTOR OrigDesc;\r
+ DEBUG_PROC OrigVector;\r
+ DESCRIPTOR NewDesc;\r
+ DEBUG_PROC StubEntry;\r
+ VOID (*RegisteredCallback) ();\r
+} IDT_ENTRY;\r
+\r
+extern EFI_SYSTEM_CONTEXT SystemContext;\r
+extern UINT8 InterruptEntryStub[];\r
+extern UINT32 StubSize;\r
+extern VOID (*OrigVector) (VOID);\r
+\r
+VOID\r
+CommonIdtEntry (\r
+ VOID\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Generic IDT entry\r
+\r
+Arguments:\r
+\r
+ None\r
+\r
+Returns:\r
+\r
+ None\r
+\r
+--*/\r
+;\r
+\r
+\r
+BOOLEAN\r
+FxStorSupport (\r
+ VOID\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Check whether FXSTOR is supported\r
+\r
+Arguments:\r
+\r
+ None\r
+\r
+Returns:\r
+\r
+ TRUE - supported\r
+ FALSE - not supported\r
+\r
+--*/\r
+;\r
+\r
+DESCRIPTOR *\r
+GetIdtr (\r
+ VOID\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Return the physical address of IDTR\r
+\r
+Arguments:\r
+\r
+ None\r
+\r
+Returns:\r
+\r
+ The physical address of IDTR\r
+\r
+--*/\r
+;\r
+\r
+VOID\r
+Vect2Desc (\r
+ DESCRIPTOR * DestDesc,\r
+ VOID (*Vector) (VOID)\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Encodes an IDT descriptor with the given physical address\r
+\r
+Arguments:\r
+\r
+ DestDesc - The IDT descriptor address\r
+ Vector - The interrupt vector entry\r
+\r
+Returns:\r
+\r
+ None\r
+\r
+--*/\r
+;\r
+\r
+BOOLEAN\r
+WriteInterruptFlag (\r
+ BOOLEAN NewState\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Programs interrupt flag to the requested state and returns previous\r
+ state.\r
+\r
+Arguments:\r
+\r
+ NewState - New interrupt status\r
+\r
+Returns:\r
+\r
+ Old interrupt status\r
+\r
+--*/\r
+;\r
+\r
+EFI_STATUS\r
+plInitializeDebugSupportDriver (\r
+ VOID\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ Initializes driver's handler registration database.\r
+\r
+ This code executes in boot services context.\r
+\r
+Arguments:\r
+ None\r
+\r
+Returns:\r
+ EFI_SUCCESS\r
+ EFI_UNSUPPORTED - if X64 processor does not support FXSTOR/FXRSTOR instructions,\r
+ the context save will fail, so these processor's are not supported.\r
+ EFI_OUT_OF_RESOURCES - not resource to finish initialization\r
+\r
+--*/\r
+;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+plUnloadDebugSupportDriver (\r
+ IN EFI_HANDLE ImageHandle\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ This is the callback that is written to the LoadedImage protocol instance\r
+ on the image handle. It uninstalls all registered handlers and frees all entry\r
+ stub memory.\r
+\r
+ This code executes in boot services context.\r
+\r
+Arguments:\r
+ ImageHandle - The image handle of the unload handler\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS - always return success\r
+\r
+--*/\r
+;\r
+\r
+//\r
+// DebugSupport protocol member functions\r
+//\r
+EFI_STATUS\r
+EFIAPI\r
+GetMaximumProcessorIndex (\r
+ IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
+ OUT UINTN *MaxProcessorIndex\r
+ )\r
+/*++\r
+\r
+Routine Description: This is a DebugSupport protocol member function.\r
+\r
+Arguments:\r
+ This - The DebugSupport instance\r
+ MaxProcessorIndex - The maximuim supported processor index\r
+\r
+Returns:\r
+ Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0\r
+\r
+--*/\r
+;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+RegisterPeriodicCallback (\r
+ IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
+ IN UINTN ProcessorIndex,\r
+ IN EFI_PERIODIC_CALLBACK PeriodicCallback\r
+ )\r
+/*++\r
+\r
+Routine Description: This is a DebugSupport protocol member function.\r
+\r
+Arguments:\r
+ This - The DebugSupport instance\r
+ ProcessorIndex - Which processor the callback applies to.\r
+ PeriodicCallback - Callback function\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS\r
+ EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has\r
+ no handler registered for it\r
+ EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.\r
+\r
+ Other possible return values are passed through from UnHookEntry and HookEntry.\r
+\r
+--*/\r
+;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+RegisterExceptionCallback (\r
+ IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
+ IN UINTN ProcessorIndex,\r
+ IN EFI_EXCEPTION_CALLBACK NewCallback,\r
+ IN EFI_EXCEPTION_TYPE ExceptionType\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ This is a DebugSupport protocol member function.\r
+\r
+ This code executes in boot services context.\r
+\r
+Arguments:\r
+ This - The DebugSupport instance\r
+ ProcessorIndex - Which processor the callback applies to.\r
+ NewCallback - Callback function\r
+ ExceptionType - Which exception to hook\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS\r
+ EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has\r
+ no handler registered for it\r
+ EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.\r
+\r
+ Other possible return values are passed through from UnHookEntry and HookEntry.\r
+\r
+--*/\r
+;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+InvalidateInstructionCache (\r
+ IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
+ IN UINTN ProcessorIndex,\r
+ IN VOID *Start,\r
+ IN UINT64 Length\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ This is a DebugSupport protocol member function.\r
+ Calls assembly routine to flush cache.\r
+\r
+Arguments:\r
+ This - The DebugSupport instance\r
+ ProcessorIndex - Which processor the callback applies to.\r
+ Start - Physical base of the memory range to be invalidated\r
+ Length - mininum number of bytes in instruction cache to invalidate\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS - always return success\r
+\r
+--*/\r
+;\r
+\r
+#endif\r
+++ /dev/null
-#/**@file\r
-# Low leve x64 specific debug support functions.\r
-#\r
-# Copyright (c) 2006, Intel Corporation\r
-# All rights reserved. This program and the accompanying materials\r
-# are licensed and made available under the terms and conditions of the BSD License\r
-# which accompanies this distribution. The full text of the license may be found at\r
-# http://opensource.org/licenses/bsd-license.php\r
-#\r
-# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-#\r
-#**/\r
-\r
-.globl _OrigVector\r
-.globl _InterruptEntryStub\r
-.globl _StubSize\r
-.globl _CommonIdtEntry\r
-.globl _FxStorSupport\r
-\r
-_AppEsp: .long 0x11111111 # ?\r
-_DebugEsp: .long 0x22222222 # ?\r
-_ExtraPush: .long 0x33333333 # ?\r
-_ExceptData: .long 0x44444444 # ?\r
-_Eflags: .long 0x55555555 # ?\r
-_OrigVector: .long 0x66666666 # ?\r
-_StubSize: .long _InterruptEntryStubEnd - _InterruptEntryStub\r
-\r
-.globl _FxStorSupport\r
-_FxStorSupport:\r
- ret\r
-\r
-.globl _GetIdtr\r
-_GetIdtr:\r
- ret\r
-\r
-.globl _WriteInterruptFlag\r
-_WriteInterruptFlag:\r
- ret\r
-\r
-.globl _Vect2Desc\r
-_Vect2Desc:\r
- ret\r
-\r
-.globl _InterruptEntryStub\r
-_InterruptEntryStub:\r
- ret\r
-\r
-.globl _InterruptEntryStubEnd\r
-_InterruptEntryStubEnd:\r
- ret\r
-\r
-.globl _CommonIdtEntry\r
-_CommonIdtEntry:\r
- ret\r
-\r
-PhonyIretd:\r
- iret\r
+++ /dev/null
-;/** @file\r
-; Low level x64 routines used by the debug support driver.\r
-;\r
-; Copyright (c) 2007 - 2008, Intel Corporation. <BR>\r
-; All rights reserved. This program and the accompanying materials\r
-; are licensed and made available under the terms and conditions of the BSD License\r
-; which accompanies this distribution. The full text of the license may be found at\r
-; http://opensource.org/licenses/bsd-license.php\r
-;\r
-; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-;\r
-;**/\r
-\r
-EXCPT64_DIVIDE_ERROR EQU 0\r
-EXCPT64_DEBUG EQU 1\r
-EXCPT64_NMI EQU 2\r
-EXCPT64_BREAKPOINT EQU 3\r
-EXCPT64_OVERFLOW EQU 4\r
-EXCPT64_BOUND EQU 5\r
-EXCPT64_INVALID_OPCODE EQU 6\r
-EXCPT64_DOUBLE_FAULT EQU 8\r
-EXCPT64_INVALID_TSS EQU 10\r
-EXCPT64_SEG_NOT_PRESENT EQU 11\r
-EXCPT64_STACK_FAULT EQU 12\r
-EXCPT64_GP_FAULT EQU 13\r
-EXCPT64_PAGE_FAULT EQU 14\r
-EXCPT64_FP_ERROR EQU 16\r
-EXCPT64_ALIGNMENT_CHECK EQU 17\r
-EXCPT64_MACHINE_CHECK EQU 18\r
-EXCPT64_SIMD EQU 19\r
-\r
-FXSTOR_FLAG EQU 01000000h ; bit cpuid 24 of feature flags\r
-\r
-;; The FXSTOR and FXRSTOR commands are used for saving and restoring the x87,\r
-;; MMX, SSE, SSE2, etc registers. The initialization of the debugsupport driver\r
-;; MUST check the CPUID feature flags to see that these instructions are available\r
-;; and fail to init if they are not.\r
-\r
-;; fxstor [rdi]\r
-FXSTOR_RDI MACRO\r
- db 0fh, 0aeh, 00000111y ; mod = 00, reg/op = 000, r/m = 111 = [rdi]\r
-ENDM\r
-\r
-;; fxrstor [rsi]\r
-FXRSTOR_RSI MACRO\r
- db 0fh, 0aeh, 00001110y ; mod = 00, reg/op = 001, r/m = 110 = [rsi]\r
-ENDM\r
-\r
-data SEGMENT\r
-\r
-public OrigVector, InterruptEntryStub, StubSize, CommonIdtEntry, FxStorSupport\r
-\r
-StubSize dd InterruptEntryStubEnd - InterruptEntryStub\r
-AppRsp dq 1111111111111111h ; ?\r
-DebugRsp dq 2222222222222222h ; ?\r
-ExtraPush dq 3333333333333333h ; ?\r
-ExceptData dq 4444444444444444h ; ?\r
-Rflags dq 5555555555555555h ; ?\r
-OrigVector dq 6666666666666666h ; ?\r
-\r
-;; The declarations below define the memory region that will be used for the debug stack.\r
-;; The context record will be built by pushing register values onto this stack.\r
-;; It is imparitive that alignment be carefully managed, since the FXSTOR and\r
-;; FXRSTOR instructions will GP fault if their memory operand is not 16 byte aligned.\r
-;;\r
-;; The stub will switch stacks from the application stack to the debuger stack\r
-;; and pushes the exception number.\r
-;;\r
-;; Then we building the context record on the stack. Since the stack grows down,\r
-;; we push the fields of the context record from the back to the front. There\r
-;; are 336 bytes of stack used prior allocating the 512 bytes of stack to be\r
-;; used as the memory buffer for the fxstor instruction. Therefore address of\r
-;; the buffer used for the FXSTOR instruction is &Eax - 336 - 512, which\r
-;; must be 16 byte aligned.\r
-;;\r
-;; We carefully locate the stack to make this happen.\r
-;;\r
-;; For reference, the context structure looks like this:\r
-;; struct {\r
-;; UINT64 ExceptionData;\r
-;; FX_SAVE_STATE_X64 FxSaveState; // 512 bytes, must be 16 byte aligned\r
-;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r
-;; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;\r
-;; UINT64 RFlags;\r
-;; UINT64 Ldtr, Tr;\r
-;; UINT64 Gdtr[2], Idtr[2];\r
-;; UINT64 Rip;\r
-;; UINT64 Gs, Fs, Es, Ds, Cs, Ss;\r
-;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;\r
-;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;\r
-;; } SYSTEM_CONTEXT_X64; // 64 bit system context record\r
-\r
-align 16\r
-DebugStackEnd db "DbgStkEnd >>>>>>" ;; 16 byte long string - must be 16 bytes to preserve alignment\r
- dd 1ffch dup (000000000h) ;; 32K should be enough stack\r
- ;; This allocation is coocked to insure\r
- ;; that the the buffer for the FXSTORE instruction\r
- ;; will be 16 byte aligned also.\r
- ;;\r
-ExceptionNumber dq ? ;; first entry will be the vector number pushed by the stub\r
-\r
-DebugStackBegin db "<<<< DbgStkBegin" ;; initial debug ESP == DebugStackBegin, set in stub\r
-\r
-data ENDS\r
-\r
-text SEGMENT\r
-\r
-externdef InterruptDistrubutionHub:near\r
-\r
-;------------------------------------------------------------------------------\r
-; VOID\r
-; EfiWbinvd (\r
-; VOID\r
-; )\r
-;\r
-; Abstract: Writeback and invalidate cache\r
-;\r
-EfiWbinvd PROC PUBLIC\r
- wbinvd\r
- ret\r
-EfiWbinvd ENDP\r
-\r
-;------------------------------------------------------------------------------\r
-; BOOLEAN\r
-; FxStorSupport (\r
-; void\r
-; )\r
-;\r
-; Abstract: Returns TRUE if FxStor instructions are supported\r
-;\r
-FxStorSupport PROC PUBLIC\r
-\r
-;\r
-; cpuid corrupts rbx which must be preserved per the C calling convention\r
-;\r
- push rbx\r
- mov rax, 1\r
- cpuid\r
- mov eax, edx\r
- and rax, FXSTOR_FLAG\r
- shr rax, 24\r
- pop rbx\r
- ret\r
-FxStorSupport ENDP\r
-\r
-\r
-;------------------------------------------------------------------------------\r
-; DESCRIPTOR *\r
-; GetIdtr (\r
-; void\r
-; )\r
-;\r
-; Abstract: Returns physical address of IDTR\r
-;\r
-GetIdtr PROC PUBLIC\r
- push rbp\r
- mov rbp, rsp\r
-\r
- sidt QWORD PTR [rbp - 0ah]\r
- mov rax, QWORD PTR [rbp - 8h]\r
-\r
- mov rsp, rbp\r
- pop rbp\r
- ret\r
-GetIdtr ENDP\r
-\r
-\r
-;------------------------------------------------------------------------------\r
-; BOOLEAN\r
-; WriteInterruptFlag (\r
-; BOOLEAN NewState // rcx\r
-; )\r
-;\r
-; Abstract: Programs interrupt flag to the requested state and returns previous\r
-; state.\r
-;\r
-WriteInterruptFlag PROC PUBLIC\r
-\r
- pushfq\r
- pop rax\r
- and rax, 200h\r
- shr rax, 9\r
- cmp rcx, 0\r
- jnz EnableIF\r
- cli\r
- ret\r
-EnableIF:\r
- sti\r
- ret\r
-\r
-WriteInterruptFlag ENDP\r
-\r
-\r
-\r
-;------------------------------------------------------------------------------\r
-; void\r
-; Vect2Desc (\r
-; DESCRIPTOR * DestDesc, // rcx\r
-; void (*Vector) (void) // rdx\r
-; )\r
-;\r
-; Abstract: Encodes an IDT descriptor with the given physical address\r
-;\r
-Vect2Desc PROC PUBLIC\r
-\r
- mov rax, rdx\r
- mov word ptr [rcx], ax ; write bits 15..0 of offset\r
- mov dx, cs\r
- mov word ptr [rcx+2], dx ; SYS_CODE_SEL from GDT\r
- mov word ptr [rcx+4], 0e00h OR 8000h ; type = 386 interrupt gate, present\r
- shr rax, 16\r
- mov word ptr [rcx+6], ax ; write bits 31..16 of offset\r
- shr rax, 16\r
- mov dword ptr [rcx+8], eax ; write bits 63..32 of offset\r
-\r
- ret\r
-\r
-Vect2Desc ENDP\r
-\r
-\r
-\r
-;------------------------------------------------------------------------------\r
-; InterruptEntryStub\r
-;\r
-; Abstract: This code is not a function, but is a small piece of code that is\r
-; copied and fixed up once for each IDT entry that is hooked.\r
-;\r
-InterruptEntryStub::\r
- push 0 ; push vector number - will be modified before installed\r
- db 0e9h ; jump rel32\r
- dd 0 ; fixed up to relative address of CommonIdtEntry\r
-InterruptEntryStubEnd:\r
-\r
-\r
-\r
-;------------------------------------------------------------------------------\r
-; CommonIdtEntry\r
-;\r
-; Abstract: This code is not a function, but is the common part for all IDT\r
-; vectors.\r
-;\r
-CommonIdtEntry::\r
-;;\r
-;; At this point, the stub has saved the current application stack esp into AppRsp\r
-;; and switched stacks to the debug stack, where it pushed the vector number\r
-;;\r
-;; The application stack looks like this:\r
-;;\r
-;; ...\r
-;; (last application stack entry)\r
-;; [16 bytes alignment, do not care it]\r
-;; SS from interrupted task\r
-;; RSP from interrupted task\r
-;; rflags from interrupted task\r
-;; CS from interrupted task\r
-;; RIP from interrupted task\r
-;; Error code <-------------------- Only present for some exeption types\r
-;;\r
-;; Vector Number <----------------- pushed in our IDT Entry\r
-;;\r
-\r
-\r
-;; The stub switched us to the debug stack and pushed the interrupt number.\r
-;;\r
-;; Next, construct the context record. It will be build on the debug stack by\r
-;; pushing the registers in the correct order so as to create the context structure\r
-;; on the debug stack. The context record must be built from the end back to the\r
-;; beginning because the stack grows down...\r
-;\r
-;; For reference, the context record looks like this:\r
-;;\r
-;; typedef\r
-;; struct {\r
-;; UINT64 ExceptionData;\r
-;; FX_SAVE_STATE_X64 FxSaveState;\r
-;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r
-;; UINT64 Cr0, Cr2, Cr3, Cr4, Cr8;\r
-;; UINT64 RFlags;\r
-;; UINT64 Ldtr, Tr;\r
-;; UINT64 Gdtr[2], Idtr[2];\r
-;; UINT64 Rip;\r
-;; UINT64 Gs, Fs, Es, Ds, Cs, Ss;\r
-;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;\r
-;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;\r
-;; } SYSTEM_CONTEXT_X64; // 64 bit system context record\r
-\r
-;; NOTE: we save rsp here to prevent compiler put rip reference cause error AppRsp\r
- push rax\r
- mov rax, qword ptr [rsp][8] ; save vector number\r
- mov ExceptionNumber, rax ; save vector number\r
- pop rax\r
- add rsp, 8 ; pop vector number\r
- mov AppRsp, rsp ; save stack top\r
- mov rsp, offset DebugStackBegin ; switch to debugger stack\r
- sub rsp, 8 ; leave space for vector number\r
-\r
-;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;\r
-;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;\r
- push r15\r
- push r14\r
- push r13\r
- push r12\r
- push r11\r
- push r10\r
- push r9\r
- push r8\r
- push rax\r
- push rcx\r
- push rdx\r
- push rbx\r
- push rsp\r
- push rbp\r
- push rsi\r
- push rdi\r
-\r
-;; Save interrupt state rflags register...\r
- pushfq\r
- pop rax\r
- mov qword ptr Rflags, rax\r
-\r
-;; We need to determine if any extra data was pushed by the exception, and if so, save it\r
-;; To do this, we check the exception number pushed by the stub, and cache the\r
-;; result in a variable since we'll need this again.\r
- cmp ExceptionNumber, EXCPT64_DOUBLE_FAULT\r
- jz ExtraPushOne\r
- cmp ExceptionNumber, EXCPT64_INVALID_TSS\r
- jz ExtraPushOne\r
- cmp ExceptionNumber, EXCPT64_SEG_NOT_PRESENT\r
- jz ExtraPushOne\r
- cmp ExceptionNumber, EXCPT64_STACK_FAULT\r
- jz ExtraPushOne\r
- cmp ExceptionNumber, EXCPT64_GP_FAULT\r
- jz ExtraPushOne\r
- cmp ExceptionNumber, EXCPT64_PAGE_FAULT\r
- jz ExtraPushOne\r
- cmp ExceptionNumber, EXCPT64_ALIGNMENT_CHECK\r
- jz ExtraPushOne\r
- mov ExtraPush, 0\r
- mov ExceptData, 0\r
- jmp ExtraPushDone\r
-ExtraPushOne:\r
- mov ExtraPush, 1\r
-\r
-;; If there's some extra data, save it also, and modify the saved AppRsp to effectively\r
-;; pop this value off the application's stack.\r
- mov rax, AppRsp\r
- mov rbx, [rax]\r
- mov ExceptData, rbx\r
- add rax, 8\r
- mov AppRsp, rax\r
-\r
-ExtraPushDone:\r
-\r
-;; The "push" above pushed the debug stack rsp. Since what we're actually doing\r
-;; is building the context record on the debug stack, we need to save the pushed\r
-;; debug RSP, and replace it with the application's last stack entry...\r
- mov rax, [rsp + 24]\r
- mov DebugRsp, rax\r
- mov rax, AppRsp\r
- add rax, 40\r
- ; application stack has ss, rsp, rflags, cs, & rip, so\r
- ; last actual application stack entry is\r
- ; 40 bytes into the application stack.\r
- mov [rsp + 24], rax\r
-\r
-;; continue building context record\r
-;; UINT64 Gs, Fs, Es, Ds, Cs, Ss; insure high 16 bits of each is zero\r
- mov rax, ss\r
- push rax\r
-\r
- ; CS from application is one entry back in application stack\r
- mov rax, AppRsp\r
- movzx rax, word ptr [rax + 8]\r
- push rax\r
-\r
- mov rax, ds\r
- push rax\r
- mov rax, es\r
- push rax\r
- mov rax, fs\r
- push rax\r
- mov rax, gs\r
- push rax\r
-\r
-;; UINT64 Rip;\r
- ; Rip from application is on top of application stack\r
- mov rax, AppRsp\r
- push qword ptr [rax]\r
-\r
-;; UINT64 Gdtr[2], Idtr[2];\r
- push 0\r
- push 0\r
- sidt fword ptr [rsp]\r
- push 0\r
- push 0\r
- sgdt fword ptr [rsp]\r
-\r
-;; UINT64 Ldtr, Tr;\r
- xor rax, rax\r
- str ax\r
- push rax\r
- sldt ax\r
- push rax\r
-\r
-;; UINT64 RFlags;\r
-;; Rflags from application is two entries back in application stack\r
- mov rax, AppRsp\r
- push qword ptr [rax + 16]\r
-\r
-;; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;\r
-;; insure FXSAVE/FXRSTOR is enabled in CR4...\r
-;; ... while we're at it, make sure DE is also enabled...\r
- mov rax, cr8\r
- push rax\r
- mov rax, cr4\r
- or rax, 208h\r
- mov cr4, rax\r
- push rax\r
- mov rax, cr3\r
- push rax\r
- mov rax, cr2\r
- push rax\r
- push 0\r
- mov rax, cr0\r
- push rax\r
-\r
-;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r
- mov rax, dr7\r
- push rax\r
-;; clear Dr7 while executing debugger itself\r
- xor rax, rax\r
- mov dr7, rax\r
-\r
- mov rax, dr6\r
- push rax\r
-;; insure all status bits in dr6 are clear...\r
- xor rax, rax\r
- mov dr6, rax\r
-\r
- mov rax, dr3\r
- push rax\r
- mov rax, dr2\r
- push rax\r
- mov rax, dr1\r
- push rax\r
- mov rax, dr0\r
- push rax\r
-\r
-;; FX_SAVE_STATE_X64 FxSaveState;\r
- sub rsp, 512\r
- mov rdi, rsp\r
- ; IMPORTANT!! The debug stack has been carefully constructed to\r
- ; insure that rsp and rdi are 16 byte aligned when we get here.\r
- ; They MUST be. If they are not, a GP fault will occur.\r
- FXSTOR_RDI\r
-\r
-;; UINT64 ExceptionData;\r
- mov rax, ExceptData\r
- push rax\r
-\r
-; call to C code which will in turn call registered handler\r
-; pass in the vector number\r
- mov rdx, rsp\r
- mov rcx, ExceptionNumber\r
- sub rsp, 40\r
- call InterruptDistrubutionHub\r
- add rsp, 40\r
-\r
-; restore context...\r
-;; UINT64 ExceptionData;\r
- add rsp, 8\r
-\r
-;; FX_SAVE_STATE_X64 FxSaveState;\r
- mov rsi, rsp\r
- FXRSTOR_RSI\r
- add rsp, 512\r
-\r
-;; UINT64 Dr0, Dr1, Dr2, Dr3, Dr6, Dr7;\r
- pop rax\r
- mov dr0, rax\r
- pop rax\r
- mov dr1, rax\r
- pop rax\r
- mov dr2, rax\r
- pop rax\r
- mov dr3, rax\r
-;; skip restore of dr6. We cleared dr6 during the context save.\r
- add rsp, 8\r
- pop rax\r
- mov dr7, rax\r
-\r
-;; UINT64 Cr0, Cr1, Cr2, Cr3, Cr4, Cr8;\r
- pop rax\r
- mov cr0, rax\r
- add rsp, 8\r
- pop rax\r
- mov cr2, rax\r
- pop rax\r
- mov cr3, rax\r
- pop rax\r
- mov cr4, rax\r
- pop rax\r
- mov cr8, rax\r
-\r
-;; UINT64 RFlags;\r
- mov rax, AppRsp\r
- pop qword ptr [rax + 16]\r
-\r
-;; UINT64 Ldtr, Tr;\r
-;; UINT64 Gdtr[2], Idtr[2];\r
-;; Best not let anyone mess with these particular registers...\r
- add rsp, 48\r
-\r
-;; UINT64 Rip;\r
- pop qword ptr [rax]\r
-\r
-;; UINT64 Gs, Fs, Es, Ds, Cs, Ss;\r
-;; NOTE - modified segment registers could hang the debugger... We\r
-;; could attempt to insulate ourselves against this possibility,\r
-;; but that poses risks as well.\r
-;;\r
-\r
- pop rax\r
- ; mov gs, rax\r
- pop rax\r
- ; mov fs, rax\r
- pop rax\r
- mov es, rax\r
- pop rax\r
- mov ds, rax\r
- mov rax, AppRsp\r
- pop qword ptr [rax + 8]\r
- pop rax\r
- mov ss, rax\r
-\r
-;; The next stuff to restore is the general purpose registers that were pushed\r
-;; using the "push" instruction.\r
-;;\r
-;; The value of RSP as stored in the context record is the application RSP\r
-;; including the 5 entries on the application stack caused by the exception\r
-;; itself. It may have been modified by the debug agent, so we need to\r
-;; determine if we need to relocate the application stack.\r
-\r
- mov rbx, [rsp + 24] ; move the potentially modified AppRsp into rbx\r
- mov rax, AppRsp\r
- add rax, 40\r
- cmp rbx, rax\r
- je NoAppStackMove\r
-\r
- mov rax, AppRsp\r
- mov rcx, [rax] ; RIP\r
- mov [rbx], rcx\r
-\r
- mov rcx, [rax + 8] ; CS\r
- mov [rbx + 8], rcx\r
-\r
- mov rcx, [rax + 16] ; RFLAGS\r
- mov [rbx + 16], rcx\r
-\r
- mov rcx, [rax + 24] ; RSP\r
- mov [rbx + 24], rcx\r
-\r
- mov rcx, [rax + 32] ; SS\r
- mov [rbx + 32], rcx\r
-\r
- mov rax, rbx ; modify the saved AppRsp to the new AppRsp\r
- mov AppRsp, rax\r
-NoAppStackMove:\r
- mov rax, DebugRsp ; restore the DebugRsp on the debug stack\r
- ; so our "pop" will not cause a stack switch\r
- mov [rsp + 24], rax\r
-\r
- cmp ExceptionNumber, 068h\r
- jne NoChain\r
-\r
-Chain:\r
-\r
-;; Restore rflags so when we chain, the flags will be exactly as if we were never here.\r
-;; We gin up the stack to do an iretq so we can get ALL the flags.\r
- mov rax, AppRsp\r
- mov rbx, [rax + 40]\r
- push rbx\r
- mov rax, ss\r
- push rax\r
- mov rax, rsp\r
- add rax, 16\r
- push rax\r
- mov rax, AppRsp\r
- mov rbx, [rax + 16]\r
- and rbx, NOT 300h ; special handling for IF and TF\r
- push rbx\r
- mov rax, cs\r
- push rax\r
- mov rax, offset PhonyIretq\r
- push rax\r
- iretq\r
-PhonyIretq:\r
-\r
-;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;\r
-;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;\r
- pop rdi\r
- pop rsi\r
- pop rbp\r
- pop rsp\r
- pop rbx\r
- pop rdx\r
- pop rcx\r
- pop rax\r
- pop r8\r
- pop r9\r
- pop r10\r
- pop r11\r
- pop r12\r
- pop r13\r
- pop r14\r
- pop r15\r
-\r
-;; Switch back to application stack\r
- mov rsp, AppRsp\r
-\r
-;; Jump to original handler\r
- jmp OrigVector\r
-\r
-NoChain:\r
-;; UINT64 Rdi, Rsi, Rbp, Rsp, Rbx, Rdx, Rcx, Rax;\r
-;; UINT64 R8, R9, R10, R11, R12, R13, R14, R15;\r
- pop rdi\r
- pop rsi\r
- pop rbp\r
- pop rsp\r
- pop rbx\r
- pop rdx\r
- pop rcx\r
- pop rax\r
- pop r8\r
- pop r9\r
- pop r10\r
- pop r11\r
- pop r12\r
- pop r13\r
- pop r14\r
- pop r15\r
-\r
-;; Switch back to application stack\r
- mov rsp, AppRsp\r
-\r
-;; We're outa here...\r
- iretq\r
-text ENDS\r
-\r
-END\r
-\r
-\r
-\r
+++ /dev/null
-/**@file\r
- X64 specific debug support functions\r
-\r
-Copyright (c) 2006 - 2007, Intel Corporation\r
-All rights reserved. This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution. The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-//\r
-// private header files\r
-//\r
-#include "plDebugSupport.h"\r
-\r
-//\r
-// This the global main table to keep track of the interrupts\r
-//\r
-IDT_ENTRY *IdtEntryTable = NULL;\r
-DESCRIPTOR NullDesc = {0, 0};\r
-\r
-STATIC\r
-EFI_STATUS\r
-CreateEntryStub (\r
- IN EFI_EXCEPTION_TYPE ExceptionType,\r
- OUT VOID **Stub\r
- )\r
-/*++\r
-\r
-Routine Description: Allocate pool for a new IDT entry stub. Copy the generic\r
- stub into the new buffer and fixup the vector number and jump target address.\r
-\r
-Arguments:\r
- ExceptionType - This is the exception type that the new stub will be created\r
- for.\r
- Stub - On successful exit, *Stub contains the newly allocated entry stub.\r
-Returns:\r
- Typically EFI_SUCCESS\r
- other possibilities are passed through from AllocatePool\r
-\r
---*/\r
-{\r
- UINT8 *StubCopy;\r
-\r
- StubCopy = *Stub;\r
-\r
- //\r
- // Fixup the stub code for this vector\r
- //\r
-\r
- // The stub code looks like this:\r
- //\r
- // 00000000 6A 00 push 0 ; push vector number - will be modified before installed\r
- // 00000002 E9 db 0e9h ; jump rel32\r
- // 00000003 00000000 dd 0 ; fixed up to relative address of CommonIdtEntry\r
- //\r
-\r
- //\r
- // poke in the exception type so the second push pushes the exception type\r
- //\r
- StubCopy[0x1] = (UINT8) ExceptionType;\r
-\r
- //\r
- // fixup the jump target to point to the common entry\r
- //\r
- *(UINT32 *) &StubCopy[0x3] = (UINT32)((UINTN) CommonIdtEntry - (UINTN) &StubCopy[StubSize]);\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-STATIC\r
-EFI_STATUS\r
-HookEntry (\r
- IN EFI_EXCEPTION_TYPE ExceptionType,\r
- IN VOID (*NewCallback) ()\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- Creates a nes entry stub. Then saves the current IDT entry and replaces it\r
- with an interrupt gate for the new entry point. The IdtEntryTable is updated\r
- with the new registered function.\r
-\r
- This code executes in boot services context. The stub entry executes in interrupt\r
- context.\r
-\r
-Arguments:\r
- ExceptionType - specifies which vector to hook.\r
- NewCallback - a pointer to the new function to be registered.\r
-\r
-Returns:\r
- EFI_SUCCESS\r
- Other possibilities are passed through by CreateEntryStub\r
-\r
---*/\r
-{\r
- BOOLEAN OldIntFlagState;\r
- EFI_STATUS Status;\r
-\r
- Status = CreateEntryStub (ExceptionType, (VOID **) &IdtEntryTable[ExceptionType].StubEntry);\r
- if (Status == EFI_SUCCESS) {\r
- OldIntFlagState = WriteInterruptFlag (0);\r
- ReadIdt (ExceptionType, &(IdtEntryTable[ExceptionType].OrigDesc));\r
-\r
- ((UINT16 *) &IdtEntryTable[ExceptionType].OrigVector)[0] = ((UINT16 *) &IdtEntryTable[ExceptionType].OrigDesc.Low)[0];\r
- ((UINT16 *) &IdtEntryTable[ExceptionType].OrigVector)[1] = ((UINT16 *) &IdtEntryTable[ExceptionType].OrigDesc.Low)[3];\r
- ((UINT32 *) &IdtEntryTable[ExceptionType].OrigVector)[1] = ((UINT32 *) &IdtEntryTable[ExceptionType].OrigDesc.High)[0];\r
-\r
- Vect2Desc (&IdtEntryTable[ExceptionType].NewDesc, IdtEntryTable[ExceptionType].StubEntry);\r
- IdtEntryTable[ExceptionType].RegisteredCallback = NewCallback;\r
- WriteIdt (ExceptionType, &(IdtEntryTable[ExceptionType].NewDesc));\r
- WriteInterruptFlag (OldIntFlagState);\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-STATIC\r
-EFI_STATUS\r
-UnhookEntry (\r
- IN EFI_EXCEPTION_TYPE ExceptionType\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- Undoes HookEntry. This code executes in boot services context.\r
-\r
-Arguments:\r
- ExceptionType - specifies which entry to unhook\r
-\r
-Returns:\r
- EFI_SUCCESS\r
-\r
---*/\r
-{\r
- BOOLEAN OldIntFlagState;\r
-\r
- OldIntFlagState = WriteInterruptFlag (0);\r
- WriteIdt (ExceptionType, &(IdtEntryTable[ExceptionType].OrigDesc));\r
- WriteInterruptFlag (OldIntFlagState);\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-EFI_STATUS\r
-ManageIdtEntryTable (\r
- VOID (*NewCallback)(),\r
- EFI_EXCEPTION_TYPE ExceptionType\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- This is the main worker function that manages the state of the interrupt\r
- handlers. It both installs and uninstalls interrupt handlers based on the\r
- value of NewCallback. If NewCallback is NULL, then uninstall is indicated.\r
- If NewCallback is non-NULL, then install is indicated.\r
-\r
-Arguments:\r
- NewCallback - If non-NULL, NewCallback specifies the new handler to register.\r
- If NULL, specifies that the previously registered handler should\r
- be uninstalled.\r
- ExceptionType - Indicates which entry to manage\r
-\r
-Returns:\r
- EFI_SUCCESS\r
- EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has\r
- no handler registered for it\r
- EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.\r
-\r
- Other possible return values are passed through from UnHookEntry and HookEntry.\r
-\r
---*/\r
-{\r
- EFI_STATUS Status;\r
-\r
- Status = EFI_SUCCESS;\r
-\r
- if (CompareDescriptor (&IdtEntryTable[ExceptionType].NewDesc, &NullDesc)) {\r
- //\r
- // we've already installed to this vector\r
- //\r
- if (NewCallback != NULL) {\r
- //\r
- // if the input handler is non-null, error\r
- //\r
- Status = EFI_ALREADY_STARTED;\r
- } else {\r
- Status = UnhookEntry (ExceptionType);\r
- }\r
- } else {\r
- //\r
- // no user handler installed on this vector\r
- //\r
- if (NewCallback == NULL) {\r
- //\r
- // if the input handler is null, error\r
- //\r
- Status = EFI_INVALID_PARAMETER;\r
- } else {\r
- Status = HookEntry (ExceptionType, NewCallback);\r
- }\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-GetMaximumProcessorIndex (\r
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
- OUT UINTN *MaxProcessorIndex\r
- )\r
-/*++\r
-\r
-Routine Description: This is a DebugSupport protocol member function.\r
-\r
-Arguments:\r
- This - The DebugSupport instance\r
- MaxProcessorIndex - The maximuim supported processor index\r
-\r
-Returns:\r
- Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0\r
-\r
---*/\r
-{\r
- *MaxProcessorIndex = 0;\r
- return (EFI_SUCCESS);\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-RegisterPeriodicCallback (\r
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
- IN UINTN ProcessorIndex,\r
- IN EFI_PERIODIC_CALLBACK PeriodicCallback\r
- )\r
-/*++\r
-\r
-Routine Description: This is a DebugSupport protocol member function.\r
-\r
-Arguments:\r
- This - The DebugSupport instance\r
- ProcessorIndex - Which processor the callback applies to.\r
- PeriodicCallback - Callback function\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS\r
- EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has\r
- no handler registered for it\r
- EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.\r
-\r
- Other possible return values are passed through from UnHookEntry and HookEntry.\r
-\r
---*/\r
-{\r
- return ManageIdtEntryTable (PeriodicCallback, SYSTEM_TIMER_VECTOR);\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-RegisterExceptionCallback (\r
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
- IN UINTN ProcessorIndex,\r
- IN EFI_EXCEPTION_CALLBACK NewCallback,\r
- IN EFI_EXCEPTION_TYPE ExceptionType\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- This is a DebugSupport protocol member function.\r
-\r
- This code executes in boot services context.\r
-\r
-Arguments:\r
- This - The DebugSupport instance\r
- ProcessorIndex - Which processor the callback applies to.\r
- NewCallback - Callback function\r
- ExceptionType - Which exception to hook\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS\r
- EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has\r
- no handler registered for it\r
- EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.\r
-\r
- Other possible return values are passed through from UnHookEntry and HookEntry.\r
-\r
---*/\r
-{\r
- return ManageIdtEntryTable (NewCallback, ExceptionType);\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-InvalidateInstructionCache (\r
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
- IN UINTN ProcessorIndex,\r
- IN VOID *Start,\r
- IN UINT64 Length\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- This is a DebugSupport protocol member function.\r
- Calls assembly routine to flush cache.\r
-\r
-Arguments:\r
- This - The DebugSupport instance\r
- ProcessorIndex - Which processor the callback applies to.\r
- Start - Physical base of the memory range to be invalidated\r
- Length - mininum number of bytes in instruction cache to invalidate\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS - always return success\r
-\r
---*/\r
-{\r
- AsmWbinvd ();\r
- return EFI_SUCCESS;\r
-}\r
-\r
-EFI_STATUS\r
-plInitializeDebugSupportDriver (\r
- VOID\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- Initializes driver's handler registration database.\r
-\r
- This code executes in boot services context.\r
-\r
-Arguments:\r
- None\r
-\r
-Returns:\r
- EFI_SUCCESS\r
- EFI_UNSUPPORTED - if X64 processor does not support FXSTOR/FXRSTOR instructions,\r
- the context save will fail, so these processor's are not supported.\r
- EFI_OUT_OF_RESOURCES - not resource to finish initialization\r
-\r
---*/\r
-{\r
- EFI_EXCEPTION_TYPE ExceptionType;\r
-\r
- if (!FxStorSupport ()) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- IdtEntryTable = AllocateZeroPool (sizeof (IDT_ENTRY) * NUM_IDT_ENTRIES);\r
- if (IdtEntryTable == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- for (ExceptionType = 0; ExceptionType < NUM_IDT_ENTRIES; ExceptionType++) {\r
- IdtEntryTable[ExceptionType].StubEntry = (DEBUG_PROC) (UINTN) AllocatePool (StubSize);\r
- if (IdtEntryTable[ExceptionType].StubEntry == NULL) {\r
- goto ErrorCleanup;\r
- }\r
-\r
- CopyMem ((VOID *)(UINTN)IdtEntryTable[ExceptionType].StubEntry, InterruptEntryStub, StubSize);\r
- }\r
- return EFI_SUCCESS;\r
-\r
-ErrorCleanup:\r
-\r
- for (ExceptionType = 0; ExceptionType < NUM_IDT_ENTRIES; ExceptionType++) {\r
- if (IdtEntryTable[ExceptionType].StubEntry != NULL) {\r
- FreePool ((VOID *)(UINTN)IdtEntryTable[ExceptionType].StubEntry);\r
- }\r
- }\r
- FreePool (IdtEntryTable);\r
-\r
- return EFI_OUT_OF_RESOURCES;\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-plUnloadDebugSupportDriver (\r
- IN EFI_HANDLE ImageHandle\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- This is the callback that is written to the LoadedImage protocol instance\r
- on the image handle. It uninstalls all registered handlers and frees all entry\r
- stub memory.\r
-\r
- This code executes in boot services context.\r
-\r
-Arguments:\r
- ImageHandle - The image handle of the unload handler\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS - always return success\r
-\r
---*/\r
-{\r
- EFI_EXCEPTION_TYPE ExceptionType;\r
-\r
- for (ExceptionType = 0; ExceptionType < NUM_IDT_ENTRIES; ExceptionType++) {\r
- ManageIdtEntryTable (NULL, ExceptionType);\r
- }\r
-\r
- FreePool (IdtEntryTable);\r
- return EFI_SUCCESS;\r
-}\r
-\r
-VOID\r
-InterruptDistrubutionHub (\r
- EFI_EXCEPTION_TYPE ExceptionType,\r
- EFI_SYSTEM_CONTEXT_IA32 *ContextRecord\r
- )\r
-/*++\r
-\r
-Routine Description: Common piece of code that invokes the registered handlers.\r
-\r
- This code executes in exception context so no efi calls are allowed.\r
-\r
-Arguments:\r
- ExceptionType - exception type\r
- ContextRecord - system context\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-{\r
- if (IdtEntryTable[ExceptionType].RegisteredCallback != NULL) {\r
- if (ExceptionType != SYSTEM_TIMER_VECTOR) {\r
- IdtEntryTable[ExceptionType].RegisteredCallback (ExceptionType, ContextRecord);\r
- } else {\r
- OrigVector = IdtEntryTable[ExceptionType].OrigVector;\r
- IdtEntryTable[ExceptionType].RegisteredCallback (ContextRecord);\r
- }\r
- }\r
-}\r
+++ /dev/null
-/**@file\r
- X64 specific debug support macros, typedefs and prototypes.\r
-\r
-Copyright (c) 2006, Intel Corporation \r
-All rights reserved. This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php \r
- \r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
-\r
-**/\r
-\r
-#ifndef _PLDEBUG_SUPPORT_H\r
-#define _PLDEBUG_SUPPORT_H\r
-\r
-\r
-#include <Uefi.h>\r
-\r
-#include <Protocol/DebugSupport.h>\r
-#include <Protocol/LoadedImage.h>\r
-\r
-#include <Library/DebugLib.h>\r
-#include <Library/UefiDriverEntryPoint.h>\r
-#include <Library/BaseMemoryLib.h>\r
-#include <Library/MemoryAllocationLib.h>\r
-#include <Library/UefiBootServicesTableLib.h>\r
-#include <Library/BaseLib.h>\r
-\r
-#include <Library/PcdLib.h>\r
-#define NUM_IDT_ENTRIES 0x78\r
-#define SYSTEM_TIMER_VECTOR 0x68\r
-#define VECTOR_ENTRY_PAGES 1\r
-#define CopyDescriptor(Dest, Src) CopyMem ((Dest), (Src), sizeof (DESCRIPTOR))\r
-#define ZeroDescriptor(Dest) CopyDescriptor ((Dest), &NullDesc)\r
-#define ReadIdt(Vector, Dest) CopyDescriptor ((Dest), &((GetIdtr ())[(Vector)]))\r
-#define WriteIdt(Vector, Src) CopyDescriptor (&((GetIdtr ())[(Vector)]), (Src))\r
-#define CompareDescriptor(Desc1, Desc2) CompareMem ((Desc1), (Desc2), sizeof (DESCRIPTOR))\r
-#define EFI_ISA IsaX64\r
-#define FF_FXSR (1 << 24)\r
-\r
-typedef struct {\r
- UINT64 Low;\r
- UINT64 High;\r
-} DESCRIPTOR;\r
-\r
-typedef\r
-VOID\r
-(*DEBUG_PROC) (\r
- VOID\r
- );\r
-\r
-typedef struct {\r
- DESCRIPTOR OrigDesc;\r
- DEBUG_PROC OrigVector;\r
- DESCRIPTOR NewDesc;\r
- DEBUG_PROC StubEntry;\r
- VOID (*RegisteredCallback) ();\r
-} IDT_ENTRY;\r
-\r
-extern EFI_SYSTEM_CONTEXT SystemContext;\r
-extern UINT8 InterruptEntryStub[];\r
-extern UINT32 StubSize;\r
-extern VOID (*OrigVector) (VOID);\r
-\r
-VOID\r
-CommonIdtEntry (\r
- VOID\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Generic IDT entry\r
-\r
-Arguments:\r
-\r
- None\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-;\r
-\r
-\r
-BOOLEAN\r
-FxStorSupport (\r
- VOID\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Check whether FXSTOR is supported\r
-\r
-Arguments:\r
-\r
- None\r
-\r
-Returns:\r
-\r
- TRUE - supported\r
- FALSE - not supported\r
-\r
---*/\r
-;\r
-\r
-DESCRIPTOR *\r
-GetIdtr (\r
- VOID\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Return the physical address of IDTR\r
-\r
-Arguments:\r
-\r
- None\r
-\r
-Returns:\r
-\r
- The physical address of IDTR\r
-\r
---*/\r
-;\r
-\r
-VOID\r
-Vect2Desc (\r
- DESCRIPTOR * DestDesc,\r
- VOID (*Vector) (VOID)\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Encodes an IDT descriptor with the given physical address\r
-\r
-Arguments:\r
-\r
- DestDesc - The IDT descriptor address\r
- Vector - The interrupt vector entry\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-;\r
-\r
-BOOLEAN\r
-WriteInterruptFlag (\r
- BOOLEAN NewState\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Programs interrupt flag to the requested state and returns previous\r
- state.\r
-\r
-Arguments:\r
-\r
- NewState - New interrupt status\r
-\r
-Returns:\r
-\r
- Old interrupt status\r
-\r
---*/\r
-;\r
-\r
-EFI_STATUS\r
-plInitializeDebugSupportDriver (\r
- VOID\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- Initializes driver's handler registration database.\r
-\r
- This code executes in boot services context.\r
-\r
-Arguments:\r
- None\r
-\r
-Returns:\r
- EFI_SUCCESS\r
- EFI_UNSUPPORTED - if X64 processor does not support FXSTOR/FXRSTOR instructions,\r
- the context save will fail, so these processor's are not supported.\r
- EFI_OUT_OF_RESOURCES - not resource to finish initialization\r
-\r
---*/\r
-;\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-plUnloadDebugSupportDriver (\r
- IN EFI_HANDLE ImageHandle\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- This is the callback that is written to the LoadedImage protocol instance\r
- on the image handle. It uninstalls all registered handlers and frees all entry\r
- stub memory.\r
-\r
- This code executes in boot services context.\r
-\r
-Arguments:\r
- ImageHandle - The image handle of the unload handler\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS - always return success\r
-\r
---*/\r
-;\r
-\r
-//\r
-// DebugSupport protocol member functions\r
-//\r
-EFI_STATUS\r
-EFIAPI\r
-GetMaximumProcessorIndex (\r
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
- OUT UINTN *MaxProcessorIndex\r
- )\r
-/*++\r
-\r
-Routine Description: This is a DebugSupport protocol member function.\r
-\r
-Arguments:\r
- This - The DebugSupport instance\r
- MaxProcessorIndex - The maximuim supported processor index\r
-\r
-Returns:\r
- Always returns EFI_SUCCESS with *MaxProcessorIndex set to 0\r
-\r
---*/\r
-;\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-RegisterPeriodicCallback (\r
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
- IN UINTN ProcessorIndex,\r
- IN EFI_PERIODIC_CALLBACK PeriodicCallback\r
- )\r
-/*++\r
-\r
-Routine Description: This is a DebugSupport protocol member function.\r
-\r
-Arguments:\r
- This - The DebugSupport instance\r
- ProcessorIndex - Which processor the callback applies to.\r
- PeriodicCallback - Callback function\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS\r
- EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has\r
- no handler registered for it\r
- EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.\r
-\r
- Other possible return values are passed through from UnHookEntry and HookEntry.\r
-\r
---*/\r
-;\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-RegisterExceptionCallback (\r
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
- IN UINTN ProcessorIndex,\r
- IN EFI_EXCEPTION_CALLBACK NewCallback,\r
- IN EFI_EXCEPTION_TYPE ExceptionType\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- This is a DebugSupport protocol member function.\r
-\r
- This code executes in boot services context.\r
-\r
-Arguments:\r
- This - The DebugSupport instance\r
- ProcessorIndex - Which processor the callback applies to.\r
- NewCallback - Callback function\r
- ExceptionType - Which exception to hook\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS\r
- EFI_INVALID_PARAMETER - requested uninstalling a handler from a vector that has\r
- no handler registered for it\r
- EFI_ALREADY_STARTED - requested install to a vector that already has a handler registered.\r
-\r
- Other possible return values are passed through from UnHookEntry and HookEntry.\r
-\r
---*/\r
-;\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-InvalidateInstructionCache (\r
- IN EFI_DEBUG_SUPPORT_PROTOCOL *This,\r
- IN UINTN ProcessorIndex,\r
- IN VOID *Start,\r
- IN UINT64 Length\r
- )\r
-/*++\r
-\r
-Routine Description:\r
- This is a DebugSupport protocol member function.\r
- Calls assembly routine to flush cache.\r
-\r
-Arguments:\r
- This - The DebugSupport instance\r
- ProcessorIndex - Which processor the callback applies to.\r
- Start - Physical base of the memory range to be invalidated\r
- Length - mininum number of bytes in instruction cache to invalidate\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS - always return success\r
-\r
---*/\r
-;\r
-\r
-#endif\r
projects / mirror_edk2.git / commitdiff