133 lines
3.7 KiB
C
133 lines
3.7 KiB
C
/**************************************************************************
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*
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* Copyright 2009 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifdef HAVE_UDIS86
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#include <udis86.h>
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#endif
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#include "util/u_math.h"
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#include "util/u_debug.h"
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#include "lp_bld_debug.h"
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/**
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* Check alignment.
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*
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* It is important that this check is not implemented as a macro or inlined
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* function, as the compiler assumptions in respect to alignment of global
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* and stack variables would often make the check a no op, defeating the
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* whole purpose of the exercise.
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*/
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boolean
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lp_check_alignment(const void *ptr, unsigned alignment)
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{
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assert(util_is_power_of_two(alignment));
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return ((uintptr_t)ptr & (alignment - 1)) == 0;
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}
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void
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lp_disassemble(const void* func)
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{
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#ifdef HAVE_UDIS86
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ud_t ud_obj;
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uint64_t max_jmp_pc;
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ud_init(&ud_obj);
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ud_set_input_buffer(&ud_obj, (void*)func, 0xffff);
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max_jmp_pc = (uint64_t) (uintptr_t) func;
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ud_set_pc(&ud_obj, max_jmp_pc);
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#ifdef PIPE_ARCH_X86
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ud_set_mode(&ud_obj, 32);
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#endif
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#ifdef PIPE_ARCH_X86_64
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ud_set_mode(&ud_obj, 64);
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#endif
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ud_set_syntax(&ud_obj, UD_SYN_ATT);
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while (ud_disassemble(&ud_obj)) {
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#ifdef PIPE_ARCH_X86
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debug_printf("0x%08lx:\t", (unsigned long)ud_insn_off(&ud_obj));
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#endif
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#ifdef PIPE_ARCH_X86_64
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debug_printf("0x%016llx:\t", (unsigned long long)ud_insn_off(&ud_obj));
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#endif
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#if 0
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debug_printf("%-16s ", ud_insn_hex(&ud_obj));
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#endif
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debug_printf("%s\n", ud_insn_asm(&ud_obj));
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if(ud_obj.mnemonic != UD_Icall) {
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unsigned i;
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for(i = 0; i < 3; ++i) {
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const struct ud_operand *op = &ud_obj.operand[i];
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if (op->type == UD_OP_JIMM){
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uint64_t pc = ud_obj.pc;
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switch (op->size) {
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case 8:
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pc += op->lval.sbyte;
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break;
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case 16:
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pc += op->lval.sword;
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break;
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case 32:
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pc += op->lval.sdword;
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break;
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default:
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break;
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}
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if(pc > max_jmp_pc)
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max_jmp_pc = pc;
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}
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}
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}
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if ((ud_insn_off(&ud_obj) >= max_jmp_pc && ud_obj.mnemonic == UD_Iret) ||
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ud_obj.mnemonic == UD_Iinvalid)
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break;
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}
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#if 0
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/* Print GDB command, useful to verify udis86 output */
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debug_printf("disassemble %p %p\n", func, (void*)(uintptr_t)ud_obj.pc);
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#endif
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debug_printf("\n");
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#else
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(void)func;
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#endif
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}
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