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