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first pass over mixed-mode disassembly

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This commit is contained in:
Ryan Fleury
2024-04-23 13:52:44 -07:00
parent 5b87c2b64a
commit 425626a275
3 changed files with 89 additions and 12 deletions
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src/dasm_cache/dasm_cache.c
+69 -8
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@@ -249,6 +249,7 @@ dasm_info_from_hash_params(DASM_Scope *scope, U128 hash, DASM_Params *params)
DLLPushBack(slot->first, slot->last, node);
node->hash = hash;
MemoryCopyStruct(&node->params, params);
// TODO(rjf): need to make this releasable - currently all exe_paths just leak
node->params.exe_path = push_str8_copy(stripe->arena, node->params.exe_path);
node_is_new = 1;
}
@@ -361,6 +362,7 @@ dasm_parse_thread__entry_point(void *p)
dasm_u2p_dequeue_req(scratch.arena, &hash, &params);
HS_Scope *hs_scope = hs_scope_open();
DBGI_Scope *dbgi_scope = dbgi_scope_open();
TXT_Scope *txt_scope = txt_scope_open();
//- rjf: unpack hash
U64 slot_idx = hash.u64[1]%dasm_shared->slots_count;
@@ -388,6 +390,7 @@ dasm_parse_thread__entry_point(void *p)
{
dbgi = dbgi_parse_from_exe_path(dbgi_scope, params.exe_path, max_U64);
}
RDI_Parsed *rdi = &dbgi->rdi;
//- rjf: hash -> data
String8 data = {0};
@@ -396,12 +399,6 @@ dasm_parse_thread__entry_point(void *p)
data = hs_data_from_hash(hs_scope, hash);
}
//- rjf: get first line info
if(got_task)
{
// U32 voff_unit_idx = rdi_vmap_idx_from_voff();
}
//- rjf: data * arch * addr * dbg -> decode artifacts
DASM_InstChunkList inst_list = {0};
String8List inst_strings = {0};
@@ -425,7 +422,8 @@ dasm_parse_thread__entry_point(void *p)
ud_set_syntax(&udc, params.syntax == DASM_Syntax_Intel ? UD_SYN_INTEL : UD_SYN_ATT);
// rjf: disassemble
U64 byte_process_start_off = 0;
RDI_SourceFile *last_file = &rdi_source_file_nil;
RDI_Line *last_line = 0;
for(U64 off = 0; off < data.size;)
{
// rjf: disassemble one instruction
@@ -439,11 +437,73 @@ dasm_parse_thread__entry_point(void *p)
struct ud_operand *first_op = (struct ud_operand *)ud_insn_opr(&udc, 0);
U64 rel_voff = (first_op != 0 && first_op->type == UD_OP_JIMM) ? ud_syn_rel_target(&udc, first_op) : 0;
// rjf: push strings derived from voff -> line info
if(dbgi != &dbgi_parse_nil)
{
U64 voff = (params.vaddr+off) - params.base_vaddr;
U32 unit_idx = rdi_vmap_idx_from_voff(rdi->unit_vmap, rdi->unit_vmap_count, voff);
RDI_Unit *unit = rdi_element_from_idx(rdi, units, unit_idx);
RDI_ParsedLineInfo unit_line_info = {0};
rdi_line_info_from_unit(rdi, unit, &unit_line_info);
U64 line_info_idx = rdi_line_info_idx_from_voff(&unit_line_info, voff);
if(line_info_idx < unit_line_info.count)
{
RDI_Line *line = &unit_line_info.lines[line_info_idx];
RDI_SourceFile *file = rdi_element_from_idx(rdi, source_files, line->file_idx);
String8 file_normalized_full_path = {0};
file_normalized_full_path.str = rdi_string_from_idx(rdi, file->normal_full_path_string_idx, &file_normalized_full_path.size);
if(file != last_file)
{
if(file->normal_full_path_string_idx != 0 && file_normalized_full_path.size != 0)
{
DASM_Inst inst = {0};
dasm_inst_chunk_list_push(scratch.arena, &inst_list, 1024, &inst);
str8_list_pushf(scratch.arena, &inst_strings, "| %S", file_normalized_full_path);
}
last_file = file;
}
if(line && line != last_line && file->normal_full_path_string_idx != 0 && file_normalized_full_path.size != 0)
{
FileProperties props = os_properties_from_file_path(file_normalized_full_path);
if(props.modified != 0)
{
// TODO(rjf): need redirection path - this may map to a different path on the local machine,
// need frontend to communicate path remapping info to this layer
U128 key = fs_key_from_path(file_normalized_full_path);
TXT_LangKind lang_kind = txt_lang_kind_from_extension(file_normalized_full_path);
U64 endt_us = max_U64;
U128 hash = {0};
TXT_TextInfo text_info = {0};
for(;os_now_microseconds() <= endt_us;)
{
text_info = txt_text_info_from_key_lang(txt_scope, key, lang_kind, &hash);
if(!u128_match(hash, u128_zero()))
{
break;
}
}
if(line->line_num < text_info.lines_count)
{
String8 data = hs_data_from_hash(hs_scope, hash);
String8 line_text = str8_skip_chop_whitespace(str8_substr(data, text_info.lines_ranges[line->line_num-1]));
if(line_text.size != 0)
{
DASM_Inst inst = {0};
dasm_inst_chunk_list_push(scratch.arena, &inst_list, 1024, &inst);
str8_list_pushf(scratch.arena, &inst_strings, "| %S", line_text);
}
}
}
last_line = line;
}
}
}
// rjf: push
String8 addr_part = {0};
if(params.style_flags & DASM_StyleFlag_Addresses)
{
addr_part = push_str8f(scratch.arena, "%016I64X ", params.vaddr+off);
addr_part = push_str8f(scratch.arena, "%s%016I64X ", dbgi != &dbgi_parse_nil ? " " : "", params.vaddr+off);
}
String8 code_bytes_part = {0};
if(params.style_flags & DASM_StyleFlag_CodeBytes)
@@ -530,6 +590,7 @@ dasm_parse_thread__entry_point(void *p)
}
}
txt_scope_close(txt_scope);
dbgi_scope_close(dbgi_scope);
hs_scope_close(hs_scope);
scratch_end(scratch);