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/**************************************************************************
*
* 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_power_of_two(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("0x%08lx:\t", (unsigned long)ud_insn_off(&ud_obj));
#endif
#ifdef PIPE_ARCH_X86_64
debug_printf("0x%016llx:\t", (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) ||
ud_obj.mnemonic == UD_Iinvalid)
break;
}
#if 0
/* Print GDB command, useful to verify udis86 output */
debug_printf("disassemble %p %p\n", func, (void*)(uintptr_t)ud_obj.pc);
#endif
debug_printf("\n");
#else
(void)func;
#endif
}
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