diff options
Diffstat (limited to 'src/gallium/auxiliary/gallivm/lp_bld_debug.c')
-rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_debug.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_debug.c b/src/gallium/auxiliary/gallivm/lp_bld_debug.c new file mode 100644 index 0000000000..39dfc51e50 --- /dev/null +++ b/src/gallium/auxiliary/gallivm/lp_bld_debug.c @@ -0,0 +1,132 @@ +/************************************************************************** + * + * 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("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 +} |