| /* |
| * File dwarf.c - read dwarf2 information from the ELF modules |
| * |
| * Copyright (C) 2005, Raphael Junqueira |
| * Copyright (C) 2006, Eric Pouech |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| #include "config.h" |
| |
| #include <sys/types.h> |
| #include <fcntl.h> |
| #ifdef HAVE_SYS_STAT_H |
| # include <sys/stat.h> |
| #endif |
| #ifdef HAVE_SYS_MMAN_H |
| #include <sys/mman.h> |
| #endif |
| #include <limits.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #ifdef HAVE_UNISTD_H |
| # include <unistd.h> |
| #endif |
| #include <stdio.h> |
| #ifndef PATH_MAX |
| #define PATH_MAX MAX_PATH |
| #endif |
| #include <assert.h> |
| #include <stdarg.h> |
| |
| #include "windef.h" |
| #include "winbase.h" |
| #include "winreg.h" |
| #include "winnls.h" |
| |
| #include "dbghelp_private.h" |
| |
| #include "wine/debug.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(dbghelp_dwarf); |
| |
| /* FIXME: |
| * - Functions: |
| * o unspecified parameters |
| * o inlined functions |
| * o Debug{Start|End}Point |
| * o CFA |
| * - Udt |
| * o proper types loading (nesting) |
| */ |
| |
| #if 0 |
| static void dump(const void* ptr, unsigned len) |
| { |
| int i, j; |
| BYTE msg[128]; |
| static const char hexof[] = "0123456789abcdef"; |
| const BYTE* x = (const BYTE*)ptr; |
| |
| for (i = 0; i < len; i += 16) |
| { |
| sprintf(msg, "%08x: ", i); |
| memset(msg + 10, ' ', 3 * 16 + 1 + 16); |
| for (j = 0; j < min(16, len - i); j++) |
| { |
| msg[10 + 3 * j + 0] = hexof[x[i + j] >> 4]; |
| msg[10 + 3 * j + 1] = hexof[x[i + j] & 15]; |
| msg[10 + 3 * j + 2] = ' '; |
| msg[10 + 3 * 16 + 1 + j] = (x[i + j] >= 0x20 && x[i + j] < 0x7f) ? |
| x[i + j] : '.'; |
| } |
| msg[10 + 3 * 16] = ' '; |
| msg[10 + 3 * 16 + 1 + 16] = '\0'; |
| TRACE("%s\n", msg); |
| } |
| } |
| #endif |
| |
| /** |
| * |
| * Main Specs: |
| * http://www.eagercon.com/dwarf/dwarf3std.htm |
| * http://www.eagercon.com/dwarf/dwarf-2.0.0.pdf |
| * |
| * dwarf2.h: http://www.hakpetzna.com/b/binutils/dwarf2_8h-source.html |
| * |
| * example of projects who do dwarf2 parsing: |
| * http://www.x86-64.org/cgi-bin/cvsweb.cgi/binutils.dead/binutils/readelf.c?rev=1.1.1.2 |
| * http://elis.ugent.be/diota/log/ltrace_elf.c |
| */ |
| #include "dwarf.h" |
| |
| /** |
| * Parsers |
| */ |
| |
| typedef struct dwarf2_abbrev_entry_attr_s { |
| unsigned long attribute; |
| unsigned long form; |
| struct dwarf2_abbrev_entry_attr_s* next; |
| } dwarf2_abbrev_entry_attr_t; |
| |
| typedef struct dwarf2_abbrev_entry_s |
| { |
| unsigned long entry_code; |
| unsigned long tag; |
| unsigned char have_child; |
| unsigned num_attr; |
| dwarf2_abbrev_entry_attr_t* attrs; |
| } dwarf2_abbrev_entry_t; |
| |
| struct dwarf2_block |
| { |
| unsigned size; |
| const unsigned char* ptr; |
| }; |
| |
| union attribute |
| { |
| unsigned long uvalue; |
| long svalue; |
| const char* string; |
| struct dwarf2_block* block; |
| }; |
| |
| typedef struct dwarf2_debug_info_s |
| { |
| unsigned long offset; |
| const dwarf2_abbrev_entry_t*abbrev; |
| struct symt* symt; |
| union attribute* attributes; |
| struct vector children; |
| } dwarf2_debug_info_t; |
| |
| |
| typedef struct dwarf2_section_s |
| { |
| const unsigned char* address; |
| unsigned size; |
| } dwarf2_section_t; |
| |
| enum dwarf2_sections {section_debug, section_string, section_abbrev, section_line, section_max}; |
| |
| typedef struct dwarf2_traverse_context_s |
| { |
| const dwarf2_section_t* sections; |
| unsigned section; |
| const unsigned char* data; |
| const unsigned char* start_data; |
| const unsigned char* end_data; |
| unsigned long offset; |
| unsigned char word_size; |
| } dwarf2_traverse_context_t; |
| |
| typedef struct dwarf2_parse_context_s |
| { |
| struct pool pool; |
| struct module* module; |
| const struct elf_thunk_area*thunks; |
| struct sparse_array abbrev_table; |
| struct sparse_array debug_info_table; |
| unsigned char word_size; |
| } dwarf2_parse_context_t; |
| |
| /* forward declarations */ |
| static struct symt* dwarf2_parse_enumeration_type(dwarf2_parse_context_t* ctx, dwarf2_debug_info_t* entry); |
| |
| static unsigned char dwarf2_parse_byte(dwarf2_traverse_context_t* ctx) |
| { |
| unsigned char uvalue = *(const unsigned char*) ctx->data; |
| ctx->data += 1; |
| return uvalue; |
| } |
| |
| static unsigned short dwarf2_parse_u2(dwarf2_traverse_context_t* ctx) |
| { |
| unsigned short uvalue = *(const unsigned short*) ctx->data; |
| ctx->data += 2; |
| return uvalue; |
| } |
| |
| static unsigned long dwarf2_parse_u4(dwarf2_traverse_context_t* ctx) |
| { |
| unsigned long uvalue = *(const unsigned int*) ctx->data; |
| ctx->data += 4; |
| return uvalue; |
| } |
| |
| static unsigned long dwarf2_leb128_as_unsigned(dwarf2_traverse_context_t* ctx) |
| { |
| unsigned long ret = 0; |
| unsigned char byte; |
| unsigned shift = 0; |
| |
| assert( NULL != ctx ); |
| |
| do |
| { |
| byte = dwarf2_parse_byte(ctx); |
| ret |= (byte & 0x7f) << shift; |
| shift += 7; |
| } while (byte & 0x80); |
| |
| return ret; |
| } |
| |
| static long dwarf2_leb128_as_signed(dwarf2_traverse_context_t* ctx) |
| { |
| long ret = 0; |
| unsigned char byte; |
| unsigned shift = 0; |
| const unsigned size = sizeof(int) * 8; |
| |
| assert( NULL != ctx ); |
| |
| do |
| { |
| byte = dwarf2_parse_byte(ctx); |
| ret |= (byte & 0x7f) << shift; |
| shift += 7; |
| } while (byte & 0x80); |
| |
| /* as spec: sign bit of byte is 2nd high order bit (80x40) |
| * -> 0x80 is used as flag. |
| */ |
| if ((shift < size) && (byte & 0x40)) |
| { |
| ret |= - (1 << shift); |
| } |
| return ret; |
| } |
| |
| static unsigned long dwarf2_parse_addr(dwarf2_traverse_context_t* ctx) |
| { |
| unsigned long ret; |
| |
| switch (ctx->word_size) |
| { |
| case 4: |
| ret = dwarf2_parse_u4(ctx); |
| break; |
| default: |
| FIXME("Unsupported Word Size %u\n", ctx->word_size); |
| ret = 0; |
| } |
| return ret; |
| } |
| |
| static const char* dwarf2_debug_traverse_ctx(const dwarf2_traverse_context_t* ctx) |
| { |
| return wine_dbg_sprintf("ctx(0x%x)", ctx->data - ctx->sections[ctx->section].address); |
| } |
| |
| static const char* dwarf2_debug_ctx(const dwarf2_parse_context_t* ctx) |
| { |
| return wine_dbg_sprintf("ctx(%p,%s)", ctx, ctx->module->module.ModuleName); |
| } |
| |
| static const char* dwarf2_debug_di(dwarf2_debug_info_t* di) |
| { |
| return wine_dbg_sprintf("debug_info(offset:0x%lx,abbrev:%p,symt:%p)", |
| di->offset, di->abbrev, di->symt); |
| } |
| |
| static dwarf2_abbrev_entry_t* |
| dwarf2_abbrev_table_find_entry(struct sparse_array* abbrev_table, |
| unsigned long entry_code) |
| { |
| assert( NULL != abbrev_table ); |
| return sparse_array_find(abbrev_table, entry_code); |
| } |
| |
| static void dwarf2_parse_abbrev_set(dwarf2_traverse_context_t* abbrev_ctx, |
| struct sparse_array* abbrev_table, |
| struct pool* pool) |
| { |
| unsigned long entry_code; |
| dwarf2_abbrev_entry_t* abbrev_entry; |
| dwarf2_abbrev_entry_attr_t* new = NULL; |
| dwarf2_abbrev_entry_attr_t* last = NULL; |
| unsigned long attribute; |
| unsigned long form; |
| |
| assert( NULL != abbrev_ctx ); |
| |
| TRACE("%s, end at %p\n", |
| dwarf2_debug_traverse_ctx(abbrev_ctx), abbrev_ctx->end_data); |
| |
| sparse_array_init(abbrev_table, sizeof(dwarf2_abbrev_entry_t), 32); |
| while (abbrev_ctx->data < abbrev_ctx->end_data) |
| { |
| TRACE("now at %s\n", dwarf2_debug_traverse_ctx(abbrev_ctx)); |
| entry_code = dwarf2_leb128_as_unsigned(abbrev_ctx); |
| TRACE("found entry_code %lu\n", entry_code); |
| if (!entry_code) |
| { |
| TRACE("NULL entry code at %s\n", dwarf2_debug_traverse_ctx(abbrev_ctx)); |
| break; |
| } |
| abbrev_entry = sparse_array_add(abbrev_table, entry_code, pool); |
| assert( NULL != abbrev_entry ); |
| |
| abbrev_entry->entry_code = entry_code; |
| abbrev_entry->tag = dwarf2_leb128_as_unsigned(abbrev_ctx); |
| abbrev_entry->have_child = dwarf2_parse_byte(abbrev_ctx); |
| abbrev_entry->attrs = NULL; |
| abbrev_entry->num_attr = 0; |
| |
| TRACE("table:(%p,#%u) entry_code(%lu) tag(0x%lx) have_child(%u) -> %p\n", |
| abbrev_table, sparse_array_length(abbrev_table), |
| entry_code, abbrev_entry->tag, abbrev_entry->have_child, abbrev_entry); |
| |
| last = NULL; |
| while (1) |
| { |
| attribute = dwarf2_leb128_as_unsigned(abbrev_ctx); |
| form = dwarf2_leb128_as_unsigned(abbrev_ctx); |
| if (!attribute) break; |
| |
| new = pool_alloc(pool, sizeof(dwarf2_abbrev_entry_attr_t)); |
| assert(new); |
| |
| new->attribute = attribute; |
| new->form = form; |
| new->next = NULL; |
| if (abbrev_entry->attrs) last->next = new; |
| else abbrev_entry->attrs = new; |
| last = new; |
| abbrev_entry->num_attr++; |
| } |
| } |
| TRACE("found %u entries\n", sparse_array_length(abbrev_table)); |
| } |
| |
| static void dwarf2_parse_attr_into_di(struct pool* pool, |
| dwarf2_traverse_context_t* ctx, |
| const dwarf2_abbrev_entry_attr_t* abbrev_attr, |
| union attribute* attr) |
| |
| { |
| TRACE("(attr:0x%lx,form:0x%lx)\n", abbrev_attr->attribute, abbrev_attr->form); |
| |
| switch (abbrev_attr->form) { |
| case DW_FORM_ref_addr: |
| case DW_FORM_addr: |
| attr->uvalue = dwarf2_parse_addr(ctx); |
| TRACE("addr<0x%lx>\n", attr->uvalue); |
| break; |
| |
| case DW_FORM_flag: |
| attr->uvalue = dwarf2_parse_byte(ctx); |
| TRACE("flag<0x%lx>\n", attr->uvalue); |
| break; |
| |
| case DW_FORM_data1: |
| attr->uvalue = dwarf2_parse_byte(ctx); |
| TRACE("data1<%lu>\n", attr->uvalue); |
| break; |
| |
| case DW_FORM_data2: |
| attr->uvalue = dwarf2_parse_u2(ctx); |
| TRACE("data2<%lu>\n", attr->uvalue); |
| break; |
| |
| case DW_FORM_data4: |
| attr->uvalue = dwarf2_parse_u4(ctx); |
| TRACE("data4<%lu>\n", attr->uvalue); |
| break; |
| |
| case DW_FORM_data8: |
| FIXME("Unhandled 64bits support\n"); |
| ctx->data += 8; |
| break; |
| |
| case DW_FORM_ref1: |
| attr->uvalue = ctx->offset + dwarf2_parse_byte(ctx); |
| TRACE("ref1<0x%lx>\n", attr->uvalue); |
| break; |
| |
| case DW_FORM_ref2: |
| attr->uvalue = ctx->offset + dwarf2_parse_u2(ctx); |
| TRACE("ref2<0x%lx>\n", attr->uvalue); |
| break; |
| |
| case DW_FORM_ref4: |
| attr->uvalue = ctx->offset + dwarf2_parse_u4(ctx); |
| TRACE("ref4<0x%lx>\n", attr->uvalue); |
| break; |
| |
| case DW_FORM_ref8: |
| FIXME("Unhandled 64 bit support\n"); |
| ctx->data += 8; |
| break; |
| |
| case DW_FORM_sdata: |
| attr->svalue = dwarf2_leb128_as_signed(ctx); |
| break; |
| |
| case DW_FORM_ref_udata: |
| attr->uvalue = dwarf2_leb128_as_unsigned(ctx); |
| break; |
| |
| case DW_FORM_udata: |
| attr->uvalue = dwarf2_leb128_as_unsigned(ctx); |
| break; |
| |
| case DW_FORM_string: |
| attr->string = (const char*)ctx->data; |
| ctx->data += strlen(attr->string) + 1; |
| TRACE("string<%s>\n", attr->string); |
| break; |
| |
| case DW_FORM_strp: |
| { |
| unsigned long offset = dwarf2_parse_u4(ctx); |
| attr->string = (const char*)ctx->sections[section_string].address + offset; |
| } |
| TRACE("strp<%s>\n", attr->string); |
| break; |
| case DW_FORM_block: |
| attr->block = pool_alloc(pool, sizeof(struct dwarf2_block)); |
| attr->block->size = dwarf2_leb128_as_unsigned(ctx); |
| attr->block->ptr = ctx->data; |
| ctx->data += attr->block->size; |
| break; |
| |
| case DW_FORM_block1: |
| attr->block = pool_alloc(pool, sizeof(struct dwarf2_block)); |
| attr->block->size = dwarf2_parse_byte(ctx); |
| attr->block->ptr = ctx->data; |
| ctx->data += attr->block->size; |
| break; |
| |
| case DW_FORM_block2: |
| attr->block = pool_alloc(pool, sizeof(struct dwarf2_block)); |
| attr->block->size = dwarf2_parse_u2(ctx); |
| attr->block->ptr = ctx->data; |
| ctx->data += attr->block->size; |
| break; |
| |
| case DW_FORM_block4: |
| attr->block = pool_alloc(pool, sizeof(struct dwarf2_block)); |
| attr->block->size = dwarf2_parse_u4(ctx); |
| attr->block->ptr = ctx->data; |
| ctx->data += attr->block->size; |
| break; |
| |
| default: |
| FIXME("Unhandled attribute form %lx\n", abbrev_attr->form); |
| break; |
| } |
| } |
| |
| static BOOL dwarf2_find_attribute(const dwarf2_debug_info_t* di, |
| unsigned at, union attribute* attr) |
| { |
| unsigned i; |
| dwarf2_abbrev_entry_attr_t* abbrev_attr; |
| |
| for (i = 0, abbrev_attr = di->abbrev->attrs; abbrev_attr; i++, abbrev_attr = abbrev_attr->next) |
| { |
| if (abbrev_attr->attribute == at) |
| { |
| *attr = di->attributes[i]; |
| return TRUE; |
| } |
| } |
| return FALSE; |
| } |
| |
| static void dwarf2_find_name(dwarf2_parse_context_t* ctx, |
| const dwarf2_debug_info_t* di, |
| union attribute* attr, const char* pfx) |
| { |
| static int index; |
| |
| if (!dwarf2_find_attribute(di, DW_AT_name, attr)) |
| { |
| char* tmp = pool_alloc(&ctx->pool, strlen(pfx) + 16); |
| if (tmp) sprintf(tmp, "%s_%d", pfx, index++); |
| attr->string = tmp; |
| } |
| } |
| |
| static void dwarf2_load_one_entry(dwarf2_parse_context_t*, dwarf2_debug_info_t*, |
| struct symt_compiland*); |
| |
| #define Wine_DW_no_register -1 |
| #define Wine_DW_frame_register -2 |
| |
| static unsigned long dwarf2_compute_location(dwarf2_parse_context_t* ctx, |
| struct dwarf2_block* block, |
| int* in_register) |
| { |
| unsigned long loc[64]; |
| unsigned stk; |
| |
| if (in_register) *in_register = Wine_DW_no_register; |
| loc[stk = 0] = 0; |
| |
| if (block->size) |
| { |
| dwarf2_traverse_context_t lctx; |
| unsigned char op; |
| BOOL piece_found = FALSE; |
| |
| lctx.data = block->ptr; |
| lctx.end_data = block->ptr + block->size; |
| lctx.word_size = ctx->word_size; |
| |
| while (lctx.data < lctx.end_data) |
| { |
| op = dwarf2_parse_byte(&lctx); |
| switch (op) |
| { |
| case DW_OP_addr: loc[++stk] = dwarf2_parse_addr(&lctx); break; |
| case DW_OP_const1u: loc[++stk] = dwarf2_parse_byte(&lctx); break; |
| case DW_OP_const1s: loc[++stk] = (long)(signed char)dwarf2_parse_byte(&lctx); break; |
| case DW_OP_const2u: loc[++stk] = dwarf2_parse_u2(&lctx); break; |
| case DW_OP_const2s: loc[++stk] = (long)(short)dwarf2_parse_u2(&lctx); break; |
| case DW_OP_const4u: loc[++stk] = dwarf2_parse_u4(&lctx); break; |
| case DW_OP_const4s: loc[++stk] = dwarf2_parse_u4(&lctx); break; |
| case DW_OP_constu: loc[++stk] = dwarf2_leb128_as_unsigned(&lctx); break; |
| case DW_OP_consts: loc[++stk] = dwarf2_leb128_as_signed(&lctx); break; |
| case DW_OP_plus_uconst: |
| loc[stk] += dwarf2_leb128_as_unsigned(&lctx); break; |
| case DW_OP_reg0: case DW_OP_reg1: case DW_OP_reg2: case DW_OP_reg3: |
| case DW_OP_reg4: case DW_OP_reg5: case DW_OP_reg6: case DW_OP_reg7: |
| case DW_OP_reg8: case DW_OP_reg9: case DW_OP_reg10: case DW_OP_reg11: |
| case DW_OP_reg12: case DW_OP_reg13: case DW_OP_reg14: case DW_OP_reg15: |
| case DW_OP_reg16: case DW_OP_reg17: case DW_OP_reg18: case DW_OP_reg19: |
| case DW_OP_reg20: case DW_OP_reg21: case DW_OP_reg22: case DW_OP_reg23: |
| case DW_OP_reg24: case DW_OP_reg25: case DW_OP_reg26: case DW_OP_reg27: |
| case DW_OP_reg28: case DW_OP_reg29: case DW_OP_reg30: case DW_OP_reg31: |
| if (in_register) |
| { |
| /* dbghelp APIs don't know how to cope with this anyway |
| * (for example 'long long' stored in two registers) |
| * FIXME: We should tell winedbg how to deal with it (sigh) |
| */ |
| if (!piece_found || (op - DW_OP_reg0 != *in_register + 1)) |
| { |
| if (*in_register != Wine_DW_no_register) |
| FIXME("Only supporting one reg (%d -> %d)\n", |
| *in_register, op - DW_OP_reg0); |
| *in_register = op - DW_OP_reg0; |
| } |
| } |
| else FIXME("Found register, while not expecting it\n"); |
| break; |
| case DW_OP_fbreg: |
| if (in_register) |
| { |
| if (*in_register != Wine_DW_no_register) |
| FIXME("Only supporting one reg (%d -> -2)\n", *in_register); |
| *in_register = Wine_DW_frame_register; |
| } |
| else FIXME("Found register, while not expecting it\n"); |
| loc[++stk] = dwarf2_leb128_as_signed(&lctx); |
| break; |
| case DW_OP_piece: |
| { |
| unsigned sz = dwarf2_leb128_as_unsigned(&lctx); |
| WARN("Not handling OP_piece directly (size=%d)\n", sz); |
| piece_found = TRUE; |
| } |
| break; |
| default: |
| FIXME("Unhandled attr op: %x\n", op); |
| return loc[stk]; |
| } |
| } |
| } |
| return loc[stk]; |
| } |
| |
| static struct symt* dwarf2_lookup_type(dwarf2_parse_context_t* ctx, |
| const dwarf2_debug_info_t* di) |
| { |
| union attribute attr; |
| |
| if (dwarf2_find_attribute(di, DW_AT_type, &attr)) |
| { |
| dwarf2_debug_info_t* type; |
| |
| type = sparse_array_find(&ctx->debug_info_table, attr.uvalue); |
| if (!type) FIXME("Unable to find back reference to type %lx\n", attr.uvalue); |
| if (!type->symt) |
| { |
| /* load the debug info entity */ |
| dwarf2_load_one_entry(ctx, type, NULL); |
| } |
| return type->symt; |
| } |
| return NULL; |
| } |
| |
| /****************************************************************** |
| * dwarf2_read_one_debug_info |
| * |
| * Loads into memory one debug info entry, and recursively its children (if any) |
| */ |
| static BOOL dwarf2_read_one_debug_info(dwarf2_parse_context_t* ctx, |
| dwarf2_traverse_context_t* traverse, |
| dwarf2_debug_info_t** pdi) |
| { |
| const dwarf2_abbrev_entry_t*abbrev; |
| unsigned long entry_code; |
| unsigned long offset; |
| dwarf2_debug_info_t* di; |
| dwarf2_debug_info_t* child; |
| dwarf2_debug_info_t** where; |
| dwarf2_abbrev_entry_attr_t* attr; |
| unsigned i; |
| union attribute sibling; |
| |
| offset = traverse->data - traverse->sections[traverse->section].address; |
| entry_code = dwarf2_leb128_as_unsigned(traverse); |
| TRACE("found entry_code %lu at 0x%lx\n", entry_code, offset); |
| if (!entry_code) |
| { |
| *pdi = NULL; |
| return TRUE; |
| } |
| abbrev = dwarf2_abbrev_table_find_entry(&ctx->abbrev_table, entry_code); |
| if (!abbrev) |
| { |
| WARN("Cannot find abbrev entry for %lu at 0x%lx\n", entry_code, offset); |
| return FALSE; |
| } |
| di = sparse_array_add(&ctx->debug_info_table, offset, &ctx->pool); |
| if (!di) return FALSE; |
| di->offset = offset; |
| di->abbrev = abbrev; |
| di->symt = NULL; |
| |
| if (abbrev->num_attr) |
| { |
| di->attributes = pool_alloc(&ctx->pool, |
| abbrev->num_attr * sizeof(union attribute)); |
| for (i = 0, attr = abbrev->attrs; attr; i++, attr = attr->next) |
| { |
| dwarf2_parse_attr_into_di(&ctx->pool, traverse, attr, &di->attributes[i]); |
| } |
| } |
| else di->attributes = NULL; |
| if (abbrev->have_child) |
| { |
| vector_init(&di->children, sizeof(dwarf2_debug_info_t*), 16); |
| while (traverse->data < traverse->end_data) |
| { |
| if (!dwarf2_read_one_debug_info(ctx, traverse, &child)) return FALSE; |
| if (!child) break; |
| where = vector_add(&di->children, &ctx->pool); |
| if (!where) return FALSE; |
| *where = child; |
| } |
| } |
| if (dwarf2_find_attribute(di, DW_AT_sibling, &sibling) && |
| traverse->data != traverse->sections[traverse->section].address + sibling.uvalue) |
| { |
| WARN("setting cursor for %s to next sibling <0x%lx>\n", |
| dwarf2_debug_traverse_ctx(traverse), sibling.uvalue); |
| traverse->data = traverse->sections[traverse->section].address + sibling.uvalue; |
| } |
| *pdi = di; |
| return TRUE; |
| } |
| |
| static struct symt* dwarf2_parse_base_type(dwarf2_parse_context_t* ctx, |
| dwarf2_debug_info_t* di) |
| { |
| union attribute name; |
| union attribute size; |
| union attribute encoding; |
| enum BasicType bt; |
| |
| if (di->symt) return di->symt; |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| |
| dwarf2_find_name(ctx, di, &name, "base_type"); |
| if (!dwarf2_find_attribute(di, DW_AT_byte_size, &size)) size.uvalue = 0; |
| if (!dwarf2_find_attribute(di, DW_AT_encoding, &encoding)) encoding.uvalue = DW_ATE_void; |
| |
| switch (encoding.uvalue) |
| { |
| case DW_ATE_void: bt = btVoid; break; |
| case DW_ATE_address: bt = btULong; break; |
| case DW_ATE_boolean: bt = btBool; break; |
| case DW_ATE_complex_float: bt = btComplex; break; |
| case DW_ATE_float: bt = btFloat; break; |
| case DW_ATE_signed: bt = btInt; break; |
| case DW_ATE_unsigned: bt = btUInt; break; |
| case DW_ATE_signed_char: bt = btChar; break; |
| case DW_ATE_unsigned_char: bt = btChar; break; |
| default: bt = btNoType; break; |
| } |
| di->symt = &symt_new_basic(ctx->module, bt, name.string, size.uvalue)->symt; |
| if (di->abbrev->have_child) FIXME("Unsupported children\n"); |
| return di->symt; |
| } |
| |
| static struct symt* dwarf2_parse_typedef(dwarf2_parse_context_t* ctx, |
| dwarf2_debug_info_t* di) |
| { |
| struct symt* ref_type; |
| union attribute name; |
| |
| if (di->symt) return di->symt; |
| |
| TRACE("%s, for %lu\n", dwarf2_debug_ctx(ctx), di->abbrev->entry_code); |
| |
| dwarf2_find_name(ctx, di, &name, "typedef"); |
| ref_type = dwarf2_lookup_type(ctx, di); |
| |
| if (name.string) |
| { |
| di->symt = &symt_new_typedef(ctx->module, ref_type, name.string)->symt; |
| } |
| if (di->abbrev->have_child) FIXME("Unsupported children\n"); |
| return di->symt; |
| } |
| |
| static struct symt* dwarf2_parse_pointer_type(dwarf2_parse_context_t* ctx, |
| dwarf2_debug_info_t* di) |
| { |
| struct symt* ref_type; |
| union attribute size; |
| |
| if (di->symt) return di->symt; |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| |
| if (!dwarf2_find_attribute(di, DW_AT_byte_size, &size)) size.uvalue = 0; |
| ref_type = dwarf2_lookup_type(ctx, di); |
| |
| di->symt = &symt_new_pointer(ctx->module, ref_type)->symt; |
| if (di->abbrev->have_child) FIXME("Unsupported children\n"); |
| return di->symt; |
| } |
| |
| static struct symt* dwarf2_parse_array_type(dwarf2_parse_context_t* ctx, |
| dwarf2_debug_info_t* di) |
| { |
| struct symt* ref_type; |
| struct symt* idx_type = NULL; |
| union attribute min, max, cnt; |
| dwarf2_debug_info_t** pchild = NULL; |
| dwarf2_debug_info_t* child; |
| |
| if (di->symt) return di->symt; |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| |
| if (!di->abbrev->have_child) |
| { |
| FIXME("array without range information\n"); |
| return NULL; |
| } |
| ref_type = dwarf2_lookup_type(ctx, di); |
| |
| while ((pchild = vector_iter_up(&di->children, pchild))) |
| { |
| child = *pchild; |
| switch (child->abbrev->tag) |
| { |
| case DW_TAG_subrange_type: |
| idx_type = dwarf2_lookup_type(ctx, child); |
| if (!dwarf2_find_attribute(child, DW_AT_lower_bound, &min)) |
| min.uvalue = 0; |
| if (!dwarf2_find_attribute(child, DW_AT_upper_bound, &max)) |
| max.uvalue = 0; |
| if (dwarf2_find_attribute(child, DW_AT_count, &cnt)) |
| max.uvalue = min.uvalue + cnt.uvalue; |
| break; |
| default: |
| FIXME("Unhandled Tag type 0x%lx at %s, for %s\n", |
| child->abbrev->tag, dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| break; |
| } |
| } |
| di->symt = &symt_new_array(ctx->module, min.uvalue, max.uvalue, ref_type, idx_type)->symt; |
| return di->symt; |
| } |
| |
| static struct symt* dwarf2_parse_const_type(dwarf2_parse_context_t* ctx, |
| dwarf2_debug_info_t* di) |
| { |
| struct symt* ref_type; |
| |
| if (di->symt) return di->symt; |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| |
| ref_type = dwarf2_lookup_type(ctx, di); |
| if (di->abbrev->have_child) FIXME("Unsupported children\n"); |
| di->symt = ref_type; |
| |
| return ref_type; |
| } |
| |
| static struct symt* dwarf2_parse_reference_type(dwarf2_parse_context_t* ctx, |
| dwarf2_debug_info_t* di) |
| { |
| struct symt* ref_type = NULL; |
| |
| if (di->symt) return di->symt; |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| |
| ref_type = dwarf2_lookup_type(ctx, di); |
| /* FIXME: for now, we hard-wire C++ references to pointers */ |
| di->symt = &symt_new_pointer(ctx->module, ref_type)->symt; |
| |
| if (di->abbrev->have_child) FIXME("Unsupported children\n"); |
| |
| return di->symt; |
| } |
| |
| static void dwarf2_parse_udt_member(dwarf2_parse_context_t* ctx, |
| dwarf2_debug_info_t* di, |
| struct symt_udt* parent) |
| { |
| struct symt* elt_type; |
| union attribute name; |
| union attribute loc; |
| unsigned long offset = 0; |
| union attribute bit_size; |
| union attribute bit_offset; |
| |
| assert(parent); |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| |
| dwarf2_find_name(ctx, di, &name, "udt_member"); |
| elt_type = dwarf2_lookup_type(ctx, di); |
| if (dwarf2_find_attribute(di, DW_AT_data_member_location, &loc)) |
| { |
| TRACE("found member_location at %s\n", dwarf2_debug_ctx(ctx)); |
| offset = dwarf2_compute_location(ctx, loc.block, NULL); |
| TRACE("found offset:%lu\n", offset); |
| } |
| if (!dwarf2_find_attribute(di, DW_AT_bit_size, &bit_size)) bit_size.uvalue = 0; |
| if (dwarf2_find_attribute(di, DW_AT_bit_offset, &bit_offset)) |
| { |
| /* FIXME: we should only do this when implementation is LSB (which is |
| * the case on i386 processors) |
| */ |
| union attribute nbytes; |
| if (!dwarf2_find_attribute(di, DW_AT_byte_size, &nbytes)) |
| { |
| DWORD64 size; |
| nbytes.uvalue = symt_get_info(elt_type, TI_GET_LENGTH, &size) ? (unsigned long)size : 0; |
| } |
| bit_offset.uvalue = nbytes.uvalue * 8 - bit_offset.uvalue - bit_size.uvalue; |
| } |
| else bit_offset.uvalue = 0; |
| symt_add_udt_element(ctx->module, parent, name.string, elt_type, |
| (offset << 3) + bit_offset.uvalue, bit_size.uvalue); |
| |
| if (di->abbrev->have_child) FIXME("Unsupported children\n"); |
| } |
| |
| static struct symt* dwarf2_parse_udt_type(dwarf2_parse_context_t* ctx, |
| dwarf2_debug_info_t* di, |
| enum UdtKind udt) |
| { |
| union attribute name; |
| union attribute size; |
| |
| if (di->symt) return di->symt; |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| |
| dwarf2_find_name(ctx, di, &name, "udt"); |
| if (!dwarf2_find_attribute(di, DW_AT_byte_size, &size)) size.uvalue = 0; |
| |
| di->symt = &symt_new_udt(ctx->module, name.string, size.uvalue, udt)->symt; |
| |
| if (di->abbrev->have_child) /** any interest to not have child ? */ |
| { |
| dwarf2_debug_info_t** pchild = NULL; |
| dwarf2_debug_info_t* child; |
| |
| while ((pchild = vector_iter_up(&di->children, pchild))) |
| { |
| child = *pchild; |
| |
| switch (child->abbrev->tag) |
| { |
| case DW_TAG_member: |
| /* FIXME: should I follow the sibling stuff ?? */ |
| dwarf2_parse_udt_member(ctx, child, (struct symt_udt*)di->symt); |
| break; |
| case DW_TAG_enumeration_type: |
| dwarf2_parse_enumeration_type(ctx, child); |
| break; |
| case DW_TAG_structure_type: |
| case DW_TAG_class_type: |
| case DW_TAG_union_type: |
| /* FIXME: we need to handle nested udt definitions */ |
| break; |
| default: |
| FIXME("Unhandled Tag type 0x%lx at %s, for %s\n", |
| child->abbrev->tag, dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| break; |
| } |
| } |
| } |
| |
| return di->symt; |
| } |
| |
| static void dwarf2_parse_enumerator(dwarf2_parse_context_t* ctx, |
| dwarf2_debug_info_t* di, |
| struct symt_enum* parent) |
| { |
| union attribute name; |
| union attribute value; |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| |
| dwarf2_find_name(ctx, di, &name, "enum_value"); |
| if (!dwarf2_find_attribute(di, DW_AT_const_value, &value)) value.svalue = 0; |
| symt_add_enum_element(ctx->module, parent, name.string, value.svalue); |
| |
| if (di->abbrev->have_child) FIXME("Unsupported children\n"); |
| } |
| |
| static struct symt* dwarf2_parse_enumeration_type(dwarf2_parse_context_t* ctx, |
| dwarf2_debug_info_t* di) |
| { |
| union attribute name; |
| union attribute size; |
| |
| if (di->symt) return di->symt; |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| |
| dwarf2_find_name(ctx, di, &name, "enum"); |
| if (!dwarf2_find_attribute(di, DW_AT_byte_size, &size)) size.uvalue = 0; |
| |
| di->symt = &symt_new_enum(ctx->module, name.string)->symt; |
| |
| if (di->abbrev->have_child) /* any interest to not have child ? */ |
| { |
| dwarf2_debug_info_t** pchild = NULL; |
| dwarf2_debug_info_t* child; |
| |
| /* FIXME: should we use the sibling stuff ?? */ |
| while ((pchild = vector_iter_up(&di->children, pchild))) |
| { |
| child = *pchild; |
| |
| switch (child->abbrev->tag) |
| { |
| case DW_TAG_enumerator: |
| dwarf2_parse_enumerator(ctx, child, (struct symt_enum*)di->symt); |
| break; |
| default: |
| FIXME("Unhandled Tag type 0x%lx at %s, for %s\n", |
| di->abbrev->tag, dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| } |
| } |
| } |
| return di->symt; |
| } |
| |
| static unsigned dwarf2_map_register(int regno) |
| { |
| unsigned reg; |
| |
| switch (regno) |
| { |
| case Wine_DW_no_register: FIXME("What the heck\n"); reg = 0; break; |
| /* FIXME: this is a dirty hack */ |
| case Wine_DW_frame_register: reg = 0; break; |
| case 0: reg = CV_REG_EAX; break; |
| case 1: reg = CV_REG_ECX; break; |
| case 2: reg = CV_REG_EDX; break; |
| case 3: reg = CV_REG_EBX; break; |
| case 4: reg = CV_REG_ESP; break; |
| case 5: reg = CV_REG_EBP; break; |
| case 6: reg = CV_REG_ESI; break; |
| case 7: reg = CV_REG_EDI; break; |
| case 8: reg = CV_REG_EIP; break; |
| case 9: reg = CV_REG_EFLAGS; break; |
| case 10: reg = CV_REG_CS; break; |
| case 11: reg = CV_REG_SS; break; |
| case 12: reg = CV_REG_DS; break; |
| case 13: reg = CV_REG_ES; break; |
| case 14: reg = CV_REG_FS; break; |
| case 15: reg = CV_REG_GS; break; |
| case 16: case 17: case 18: case 19: |
| case 20: case 21: case 22: case 23: |
| reg = CV_REG_ST0 + regno - 16; break; |
| case 24: reg = CV_REG_CTRL; break; |
| case 25: reg = CV_REG_STAT; break; |
| case 26: reg = CV_REG_TAG; break; |
| /* |
| reg: fiseg 27 |
| reg: fioff 28 |
| reg: foseg 29 |
| reg: fooff 30 |
| reg: fop 31 |
| */ |
| case 32: case 33: case 34: case 35: |
| case 36: case 37: case 38: case 39: |
| reg = CV_REG_XMM0 + regno - 32; break; |
| case 40: reg = CV_REG_MXCSR; break; |
| default: |
| FIXME("Don't know how to map register %d\n", regno); |
| return 0; |
| } |
| return reg; |
| } |
| |
| /* structure used to pass information around when parsing a subprogram */ |
| typedef struct dwarf2_subprogram_s |
| { |
| dwarf2_parse_context_t* ctx; |
| struct symt_compiland* compiland; |
| struct symt_function* func; |
| long frame_offset; |
| int frame_reg; |
| } dwarf2_subprogram_t; |
| |
| /****************************************************************** |
| * dwarf2_parse_variable |
| * |
| * Parses any variable (parameter, local/global variable) |
| */ |
| static void dwarf2_parse_variable(dwarf2_subprogram_t* subpgm, |
| struct symt_block* block, |
| dwarf2_debug_info_t* di) |
| { |
| struct symt* param_type; |
| union attribute loc; |
| BOOL is_pmt = di->abbrev->tag == DW_TAG_formal_parameter; |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm->ctx), dwarf2_debug_di(di)); |
| |
| param_type = dwarf2_lookup_type(subpgm->ctx, di); |
| if (dwarf2_find_attribute(di, DW_AT_location, &loc)) |
| { |
| union attribute name; |
| union attribute ext; |
| long offset; |
| int in_reg; |
| |
| dwarf2_find_name(subpgm->ctx, di, &name, "parameter"); |
| offset = dwarf2_compute_location(subpgm->ctx, loc.block, &in_reg); |
| TRACE("found parameter %s/%ld (reg=%d) at %s\n", |
| name.string, offset, in_reg, dwarf2_debug_ctx(subpgm->ctx)); |
| switch (in_reg) |
| { |
| case Wine_DW_no_register: |
| /* it's a global variable */ |
| /* FIXME: we don't handle it's scope yet */ |
| if (!dwarf2_find_attribute(di, DW_AT_external, &ext)) |
| ext.uvalue = 0; |
| symt_new_global_variable(subpgm->ctx->module, subpgm->compiland, |
| name.string, !ext.uvalue, |
| subpgm->ctx->module->module.BaseOfImage + offset, |
| 0, param_type); |
| break; |
| case Wine_DW_frame_register: |
| in_reg = subpgm->frame_reg; |
| offset += subpgm->frame_offset; |
| /* fall through */ |
| default: |
| /* either a pmt/variable relative to frame pointer or |
| * pmt/variable in a register |
| */ |
| symt_add_func_local(subpgm->ctx->module, subpgm->func, |
| is_pmt ? DataIsParam : DataIsLocal, |
| dwarf2_map_register(in_reg), offset, |
| block, param_type, name.string); |
| break; |
| } |
| } |
| if (is_pmt && subpgm->func && subpgm->func->type) |
| symt_add_function_signature_parameter(subpgm->ctx->module, |
| (struct symt_function_signature*)subpgm->func->type, |
| param_type); |
| |
| if (di->abbrev->have_child) FIXME("Unsupported children\n"); |
| } |
| |
| static void dwarf2_parse_subprogram_label(dwarf2_subprogram_t* subpgm, |
| dwarf2_debug_info_t* di) |
| { |
| union attribute name; |
| union attribute low_pc; |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm->ctx), dwarf2_debug_di(di)); |
| |
| if (!dwarf2_find_attribute(di, DW_AT_low_pc, &low_pc)) low_pc.uvalue = 0; |
| dwarf2_find_name(subpgm->ctx, di, &name, "label"); |
| |
| symt_add_function_point(subpgm->ctx->module, subpgm->func, SymTagLabel, |
| subpgm->ctx->module->module.BaseOfImage + low_pc.uvalue, name.string); |
| } |
| |
| static void dwarf2_parse_subprogram_block(dwarf2_subprogram_t* subpgm, |
| struct symt_block* block_parent, |
| dwarf2_debug_info_t* di); |
| |
| static void dwarf2_parse_inlined_subroutine(dwarf2_subprogram_t* subpgm, |
| dwarf2_debug_info_t* di) |
| { |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm->ctx), dwarf2_debug_di(di)); |
| |
| /* FIXME: attributes to handle: |
| DW_AT_low_pc: |
| DW_AT_high_pc: |
| DW_AT_name: |
| */ |
| |
| if (di->abbrev->have_child) /** any interest to not have child ? */ |
| { |
| dwarf2_debug_info_t** pchild = NULL; |
| dwarf2_debug_info_t* child; |
| |
| while ((pchild = vector_iter_up(&di->children, pchild))) |
| { |
| child = *pchild; |
| |
| switch (child->abbrev->tag) |
| { |
| case DW_TAG_formal_parameter: |
| /* FIXME: this is not properly supported yet |
| * dwarf2_parse_subprogram_parameter(ctx, child, NULL); |
| */ |
| break; |
| case DW_TAG_variable: |
| /* FIXME: |
| * dwarf2_parse_variable(ctx, child); |
| */ |
| break; |
| case DW_TAG_lexical_block: |
| /* FIXME: |
| dwarf2_parse_subprogram_block(ctx, child, func); |
| */ |
| break; |
| case DW_TAG_inlined_subroutine: |
| /* FIXME */ |
| dwarf2_parse_inlined_subroutine(subpgm, child); |
| break; |
| case DW_TAG_label: |
| dwarf2_parse_subprogram_label(subpgm, child); |
| break; |
| default: |
| FIXME("Unhandled Tag type 0x%lx at %s, for %s\n", |
| child->abbrev->tag, dwarf2_debug_ctx(subpgm->ctx), |
| dwarf2_debug_di(di)); |
| } |
| } |
| } |
| } |
| |
| static void dwarf2_parse_subprogram_block(dwarf2_subprogram_t* subpgm, |
| struct symt_block* parent_block, |
| dwarf2_debug_info_t* di) |
| { |
| struct symt_block* block; |
| union attribute low_pc; |
| union attribute high_pc; |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(subpgm->ctx), dwarf2_debug_di(di)); |
| |
| if (!dwarf2_find_attribute(di, DW_AT_low_pc, &low_pc)) low_pc.uvalue = 0; |
| if (!dwarf2_find_attribute(di, DW_AT_high_pc, &high_pc)) high_pc.uvalue = 0; |
| |
| block = symt_open_func_block(subpgm->ctx->module, subpgm->func, parent_block, |
| low_pc.uvalue, high_pc.uvalue - low_pc.uvalue); |
| |
| if (di->abbrev->have_child) /** any interest to not have child ? */ |
| { |
| dwarf2_debug_info_t** pchild = NULL; |
| dwarf2_debug_info_t* child; |
| |
| while ((pchild = vector_iter_up(&di->children, pchild))) |
| { |
| child = *pchild; |
| |
| switch (child->abbrev->tag) |
| { |
| case DW_TAG_inlined_subroutine: |
| dwarf2_parse_inlined_subroutine(subpgm, child); |
| break; |
| case DW_TAG_variable: |
| dwarf2_parse_variable(subpgm, block, child); |
| break; |
| case DW_TAG_lexical_block: |
| dwarf2_parse_subprogram_block(subpgm, block, child); |
| break; |
| case DW_TAG_subprogram: |
| /* FIXME: likely a declaration (to be checked) |
| * skip it for now |
| */ |
| break; |
| case DW_TAG_formal_parameter: |
| /* FIXME: likely elements for exception handling (GCC flavor) |
| * Skip it for now |
| */ |
| break; |
| case DW_TAG_class_type: |
| case DW_TAG_structure_type: |
| case DW_TAG_union_type: |
| case DW_TAG_enumeration_type: |
| /* the type referred to will be loaded when we need it, so skip it */ |
| break; |
| default: |
| FIXME("Unhandled Tag type 0x%lx at %s, for %s\n", |
| child->abbrev->tag, dwarf2_debug_ctx(subpgm->ctx), dwarf2_debug_di(di)); |
| } |
| } |
| } |
| |
| symt_close_func_block(subpgm->ctx->module, subpgm->func, block, 0); |
| } |
| |
| static struct symt* dwarf2_parse_subprogram(dwarf2_parse_context_t* ctx, |
| dwarf2_debug_info_t* di, |
| struct symt_compiland* compiland) |
| { |
| union attribute name; |
| union attribute low_pc; |
| union attribute high_pc; |
| union attribute is_decl; |
| union attribute inline_flags; |
| union attribute frame; |
| struct symt* ret_type; |
| struct symt_function_signature* sig_type; |
| dwarf2_subprogram_t subpgm; |
| |
| if (di->symt) return di->symt; |
| |
| TRACE("%s, for %s\n", dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| |
| if (!dwarf2_find_attribute(di, DW_AT_low_pc, &low_pc)) low_pc.uvalue = 0; |
| if (!dwarf2_find_attribute(di, DW_AT_high_pc, &high_pc)) high_pc.uvalue = 0; |
| /* As functions (defined as inline assembly) get debug info with dwarf |
| * (not the case for stabs), we just drop Wine's thunks here... |
| * Actual thunks will be created in elf_module from the symbol table |
| */ |
| if (elf_is_in_thunk_area(ctx->module->module.BaseOfImage + low_pc.uvalue, |
| ctx->thunks) >= 0) |
| return NULL; |
| if (!dwarf2_find_attribute(di, DW_AT_declaration, &is_decl)) is_decl.uvalue = 0; |
| if (!dwarf2_find_attribute(di, DW_AT_inline, &inline_flags)) inline_flags.uvalue = 0; |
| dwarf2_find_name(ctx, di, &name, "subprogram"); |
| ret_type = dwarf2_lookup_type(ctx, di); |
| |
| /* FIXME: assuming C source code */ |
| sig_type = symt_new_function_signature(ctx->module, ret_type, CV_CALL_FAR_C); |
| if (!is_decl.uvalue) |
| { |
| subpgm.func = symt_new_function(ctx->module, compiland, name.string, |
| ctx->module->module.BaseOfImage + low_pc.uvalue, |
| high_pc.uvalue - low_pc.uvalue, |
| &sig_type->symt); |
| di->symt = &subpgm.func->symt; |
| } |
| else subpgm.func = NULL; |
| |
| subpgm.ctx = ctx; |
| subpgm.compiland = compiland; |
| if (dwarf2_find_attribute(di, DW_AT_frame_base, &frame)) |
| { |
| subpgm.frame_offset = dwarf2_compute_location(ctx, frame.block, &subpgm.frame_reg); |
| TRACE("For %s got %ld/%d\n", name.string, subpgm.frame_offset, subpgm.frame_reg); |
| } |
| else /* on stack !! */ |
| { |
| subpgm.frame_reg = 0; |
| subpgm.frame_offset = 0; |
| } |
| |
| if (di->abbrev->have_child) /** any interest to not have child ? */ |
| { |
| dwarf2_debug_info_t** pchild = NULL; |
| dwarf2_debug_info_t* child; |
| |
| while ((pchild = vector_iter_up(&di->children, pchild))) |
| { |
| child = *pchild; |
| |
| switch (child->abbrev->tag) |
| { |
| case DW_TAG_variable: |
| case DW_TAG_formal_parameter: |
| dwarf2_parse_variable(&subpgm, NULL, child); |
| break; |
| case DW_TAG_lexical_block: |
| dwarf2_parse_subprogram_block(&subpgm, NULL, child); |
| break; |
| case DW_TAG_inlined_subroutine: |
| dwarf2_parse_inlined_subroutine(&subpgm, child); |
| break; |
| case DW_TAG_subprogram: |
| /* FIXME: likely a declaration (to be checked) |
| * skip it for now |
| */ |
| break; |
| case DW_TAG_label: |
| dwarf2_parse_subprogram_label(&subpgm, child); |
| break; |
| case DW_TAG_class_type: |
| case DW_TAG_structure_type: |
| case DW_TAG_union_type: |
| case DW_TAG_enumeration_type: |
| case DW_TAG_typedef: |
| /* the type referred to will be loaded when we need it, so skip it */ |
| break; |
| case DW_TAG_unspecified_parameters: |
| /* FIXME: no support in dbghelp's internals so far */ |
| break; |
| default: |
| FIXME("Unhandled Tag type 0x%lx at %s, for %s\n", |
| child->abbrev->tag, dwarf2_debug_ctx(ctx), dwarf2_debug_di(di)); |
| } |
| } |
| } |
| |
| symt_normalize_function(subpgm.ctx->module, subpgm.func); |
| |
| return di->symt; |
| } |
| |
| static void dwarf2_load_one_entry(dwarf2_parse_context_t* ctx, |
| dwarf2_debug_info_t* di, |
| struct symt_compiland* compiland) |
| { |
| switch (di->abbrev->tag) |
| { |
| case DW_TAG_typedef: |
| dwarf2_parse_typedef(ctx, di); |
| break; |
| case DW_TAG_base_type: |
| dwarf2_parse_base_type(ctx, di); |
| break; |
| case DW_TAG_pointer_type: |
| dwarf2_parse_pointer_type(ctx, di); |
| break; |
| case DW_TAG_class_type: |
| dwarf2_parse_udt_type(ctx, di, UdtClass); |
| break; |
| case DW_TAG_structure_type: |
| dwarf2_parse_udt_type(ctx, di, UdtStruct); |
| break; |
| case DW_TAG_union_type: |
| dwarf2_parse_udt_type(ctx, di, UdtUnion); |
| break; |
| case DW_TAG_array_type: |
| dwarf2_parse_array_type(ctx, di); |
| break; |
| case DW_TAG_const_type: |
| dwarf2_parse_const_type(ctx, di); |
| break; |
| case DW_TAG_reference_type: |
| dwarf2_parse_reference_type(ctx, di); |
| break; |
| case DW_TAG_enumeration_type: |
| dwarf2_parse_enumeration_type(ctx, di); |
| break; |
| case DW_TAG_subprogram: |
| dwarf2_parse_subprogram(ctx, di, compiland); |
| break; |
| default: |
| WARN("Unhandled Tag type 0x%lx at %s, for %lu\n", |
| di->abbrev->tag, dwarf2_debug_ctx(ctx), di->abbrev->entry_code); |
| } |
| } |
| |
| static void dwarf2_set_line_number(struct module* module, unsigned long address, |
| struct vector* v, unsigned file, unsigned line) |
| { |
| struct symt_function* func; |
| int idx; |
| unsigned* psrc; |
| |
| if (!file || !(psrc = vector_at(v, file - 1))) return; |
| |
| TRACE("%s %lx %s %u\n", module->module.ModuleName, address, source_get(module, *psrc), line); |
| if ((idx = symt_find_nearest(module, address)) == -1 || |
| module->addr_sorttab[idx]->symt.tag != SymTagFunction) return; |
| func = (struct symt_function*)module->addr_sorttab[idx]; |
| symt_add_func_line(module, func, *psrc, line, address - func->address); |
| } |
| |
| static void dwarf2_parse_line_numbers(const dwarf2_section_t* sections, |
| dwarf2_parse_context_t* ctx, |
| unsigned long offset) |
| { |
| dwarf2_traverse_context_t traverse; |
| unsigned long length; |
| unsigned version, header_len, insn_size, default_stmt; |
| unsigned line_range, opcode_base; |
| int line_base; |
| const unsigned char* opcode_len; |
| struct vector dirs; |
| struct vector files; |
| const char** p; |
| |
| traverse.sections = sections; |
| traverse.section = section_line; |
| traverse.data = sections[section_line].address + offset; |
| traverse.start_data = traverse.data; |
| traverse.end_data = traverse.data + 4; |
| traverse.offset = offset; |
| traverse.word_size = ctx->word_size; |
| |
| length = dwarf2_parse_u4(&traverse); |
| traverse.end_data = traverse.start_data + length; |
| |
| version = dwarf2_parse_u2(&traverse); |
| header_len = dwarf2_parse_u4(&traverse); |
| insn_size = dwarf2_parse_byte(&traverse); |
| default_stmt = dwarf2_parse_byte(&traverse); |
| line_base = (signed char)dwarf2_parse_byte(&traverse); |
| line_range = dwarf2_parse_byte(&traverse); |
| opcode_base = dwarf2_parse_byte(&traverse); |
| |
| opcode_len = traverse.data; |
| traverse.data += opcode_base - 1; |
| |
| vector_init(&dirs, sizeof(const char*), 4); |
| p = vector_add(&dirs, &ctx->pool); |
| *p = "."; |
| while (*traverse.data) |
| { |
| TRACE("Got include %s\n", (const char*)traverse.data); |
| p = vector_add(&dirs, &ctx->pool); |
| *p = (const char *)traverse.data; |
| traverse.data += strlen((const char *)traverse.data) + 1; |
| } |
| traverse.data++; |
| |
| vector_init(&files, sizeof(unsigned), 16); |
| while (*traverse.data) |
| { |
| unsigned int dir_index, mod_time, length; |
| const char* name; |
| const char* dir; |
| unsigned* psrc; |
| |
| name = (const char*)traverse.data; |
| traverse.data += strlen(name) + 1; |
| dir_index = dwarf2_leb128_as_unsigned(&traverse); |
| mod_time = dwarf2_leb128_as_unsigned(&traverse); |
| length = dwarf2_leb128_as_unsigned(&traverse); |
| dir = *(const char**)vector_at(&dirs, dir_index); |
| TRACE("Got file %s/%s (%u,%u)\n", dir, name, mod_time, length); |
| psrc = vector_add(&files, &ctx->pool); |
| *psrc = source_new(ctx->module, dir, name); |
| } |
| traverse.data++; |
| |
| while (traverse.data < traverse.end_data) |
| { |
| unsigned long address = 0; |
| unsigned file = 1; |
| unsigned line = 1; |
| unsigned is_stmt = default_stmt; |
| BOOL basic_block = FALSE, end_sequence = FALSE; |
| unsigned opcode, extopcode, i; |
| |
| while (!end_sequence) |
| { |
| opcode = dwarf2_parse_byte(&traverse); |
| TRACE("Got opcode %x\n", opcode); |
| |
| if (opcode >= opcode_base) |
| { |
| unsigned delta = opcode - opcode_base; |
| |
| address += (delta / line_range) * insn_size; |
| line += line_base + (delta % line_range); |
| basic_block = TRUE; |
| dwarf2_set_line_number(ctx->module, address, &files, file, line); |
| } |
| else |
| { |
| switch (opcode) |
| { |
| case DW_LNS_copy: |
| basic_block = FALSE; |
| dwarf2_set_line_number(ctx->module, address, &files, file, line); |
| break; |
| case DW_LNS_advance_pc: |
| address += insn_size * dwarf2_leb128_as_unsigned(&traverse); |
| break; |
| case DW_LNS_advance_line: |
| line += dwarf2_leb128_as_signed(&traverse); |
| break; |
| case DW_LNS_set_file: |
| file = dwarf2_leb128_as_unsigned(&traverse); |
| break; |
| case DW_LNS_set_column: |
| dwarf2_leb128_as_unsigned(&traverse); |
| break; |
| case DW_LNS_negate_stmt: |
| is_stmt = !is_stmt; |
| break; |
| case DW_LNS_set_basic_block: |
| basic_block = 1; |
| break; |
| case DW_LNS_const_add_pc: |
| address += ((255 - opcode_base) / line_range) * insn_size; |
| break; |
| case DW_LNS_fixed_advance_pc: |
| address += dwarf2_parse_u2(&traverse); |
| break; |
| case DW_LNS_extended_op: |
| dwarf2_leb128_as_unsigned(&traverse); |
| extopcode = dwarf2_parse_byte(&traverse); |
| switch (extopcode) |
| { |
| case DW_LNE_end_sequence: |
| dwarf2_set_line_number(ctx->module, address, &files, file, line); |
| end_sequence = TRUE; |
| break; |
| case DW_LNE_set_address: |
| address = ctx->module->module.BaseOfImage + dwarf2_parse_addr(&traverse); |
| break; |
| case DW_LNE_define_file: |
| FIXME("not handled %s\n", traverse.data); |
| traverse.data += strlen((const char *)traverse.data) + 1; |
| dwarf2_leb128_as_unsigned(&traverse); |
| dwarf2_leb128_as_unsigned(&traverse); |
| dwarf2_leb128_as_unsigned(&traverse); |
| break; |
| default: |
| FIXME("Unsupported extended opcode %x\n", extopcode); |
| break; |
| } |
| break; |
| default: |
| WARN("Unsupported opcode %x\n", opcode); |
| for (i = 0; i < opcode_len[opcode]; i++) |
| dwarf2_leb128_as_unsigned(&traverse); |
| break; |
| } |
| } |
| } |
| } |
| } |
| |
| static BOOL dwarf2_parse_compilation_unit(const dwarf2_section_t* sections, |
| const dwarf2_comp_unit_t* comp_unit, |
| struct module* module, |
| const struct elf_thunk_area* thunks, |
| const unsigned char* comp_unit_cursor) |
| { |
| dwarf2_parse_context_t ctx; |
| dwarf2_traverse_context_t traverse; |
| dwarf2_traverse_context_t abbrev_ctx; |
| dwarf2_debug_info_t* di; |
| BOOL ret = FALSE; |
| |
| TRACE("Compilation Unit Header found at 0x%x:\n", |
| comp_unit_cursor - sections[section_debug].address); |
| TRACE("- length: %lu\n", comp_unit->length); |
| TRACE("- version: %u\n", comp_unit->version); |
| TRACE("- abbrev_offset: %lu\n", comp_unit->abbrev_offset); |
| TRACE("- word_size: %u\n", comp_unit->word_size); |
| |
| if (comp_unit->version != 2) |
| { |
| WARN("%u DWARF version unsupported. Wine dbghelp only support DWARF 2.\n", |
| comp_unit->version); |
| return FALSE; |
| } |
| |
| pool_init(&ctx.pool, 65536); |
| ctx.module = module; |
| ctx.word_size = comp_unit->word_size; |
| ctx.thunks = thunks; |
| |
| traverse.sections = sections; |
| traverse.section = section_debug; |
| traverse.start_data = comp_unit_cursor + sizeof(dwarf2_comp_unit_stream_t); |
| traverse.data = traverse.start_data; |
| traverse.offset = comp_unit_cursor - sections[section_debug].address; |
| traverse.word_size = comp_unit->word_size; |
| traverse.end_data = comp_unit_cursor + comp_unit->length + sizeof(unsigned); |
| |
| abbrev_ctx.sections = sections; |
| abbrev_ctx.section = section_abbrev; |
| abbrev_ctx.start_data = sections[section_abbrev].address + comp_unit->abbrev_offset; |
| abbrev_ctx.data = abbrev_ctx.start_data; |
| abbrev_ctx.end_data = sections[section_abbrev].address + sections[section_abbrev].size; |
| abbrev_ctx.offset = comp_unit->abbrev_offset; |
| abbrev_ctx.word_size = comp_unit->word_size; |
| dwarf2_parse_abbrev_set(&abbrev_ctx, &ctx.abbrev_table, &ctx.pool); |
| |
| sparse_array_init(&ctx.debug_info_table, sizeof(dwarf2_debug_info_t), 128); |
| dwarf2_read_one_debug_info(&ctx, &traverse, &di); |
| |
| if (di->abbrev->tag == DW_TAG_compile_unit) |
| { |
| union attribute name; |
| dwarf2_debug_info_t** pdi = NULL; |
| union attribute stmt_list; |
| |
| TRACE("beginning at 0x%lx, for %lu\n", di->offset, di->abbrev->entry_code); |
| |
| dwarf2_find_name(&ctx, di, &name, "compiland"); |
| di->symt = &symt_new_compiland(module, source_new(module, NULL, name.string))->symt; |
| |
| if (di->abbrev->have_child) |
| { |
| while ((pdi = vector_iter_up(&di->children, pdi))) |
| { |
| dwarf2_load_one_entry(&ctx, *pdi, (struct symt_compiland*)di->symt); |
| } |
| } |
| if (dwarf2_find_attribute(di, DW_AT_stmt_list, &stmt_list)) |
| { |
| dwarf2_parse_line_numbers(sections, &ctx, stmt_list.uvalue); |
| } |
| ret = TRUE; |
| } |
| else FIXME("Should have a compilation unit here\n"); |
| pool_destroy(&ctx.pool); |
| return ret; |
| } |
| |
| BOOL dwarf2_parse(struct module* module, unsigned long load_offset, |
| const struct elf_thunk_area* thunks, |
| const unsigned char* debug, unsigned int debug_size, |
| const unsigned char* abbrev, unsigned int abbrev_size, |
| const unsigned char* str, unsigned int str_size, |
| const unsigned char* line, unsigned int line_size) |
| { |
| dwarf2_section_t section[section_max]; |
| const unsigned char*comp_unit_cursor = debug; |
| const unsigned char*end_debug = debug + debug_size; |
| |
| section[section_debug].address = debug; |
| section[section_debug].size = debug_size; |
| section[section_abbrev].address = abbrev; |
| section[section_abbrev].size = abbrev_size; |
| section[section_string].address = str; |
| section[section_string].size = str_size; |
| section[section_line].address = line; |
| section[section_line].size = line_size; |
| |
| while (comp_unit_cursor < end_debug) |
| { |
| const dwarf2_comp_unit_stream_t* comp_unit_stream; |
| dwarf2_comp_unit_t comp_unit; |
| |
| comp_unit_stream = (const dwarf2_comp_unit_stream_t*) comp_unit_cursor; |
| comp_unit.length = *(unsigned long*) comp_unit_stream->length; |
| comp_unit.version = *(unsigned short*) comp_unit_stream->version; |
| comp_unit.abbrev_offset = *(unsigned long*) comp_unit_stream->abbrev_offset; |
| comp_unit.word_size = *(unsigned char*) comp_unit_stream->word_size; |
| |
| dwarf2_parse_compilation_unit(section, &comp_unit, module, |
| thunks, comp_unit_cursor); |
| comp_unit_cursor += comp_unit.length + sizeof(unsigned); |
| } |
| module->module.SymType = SymDia; |
| module->module.CVSig = 'D' | ('W' << 8) | ('A' << 16) | ('R' << 24); |
| /* FIXME: we could have a finer grain here */ |
| module->module.LineNumbers = TRUE; |
| module->module.GlobalSymbols = TRUE; |
| module->module.TypeInfo = TRUE; |
| module->module.SourceIndexed = TRUE; |
| module->module.Publics = TRUE; |
| return TRUE; |
| } |
