mirror of
https://github.com/Ed94/raddebugger.git
synced 2026-06-25 05:04:58 -07:00
further progress on disassembly cache; instead of caching the text via the disassembly cache, simply submit into the hash store; this allows the disassembly cache to be composed with other caches, like the text analysis cache. + plug this system into the disassembly view rule, so now we can disassemble arbitrary pointers in the watch window
This commit is contained in:
Ryan Fleury
+94
-81
@@ -1,6 +1,18 @@
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// Copyright (c) 2024 Epic Games Tools
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// Licensed under the MIT license (https://opensource.org/license/mit/)
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////////////////////////////////
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//~ rjf: Third Party Includes
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#include "third_party/udis86/config.h"
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#include "third_party/udis86/udis86.h"
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#include "third_party/udis86/libudis86/decode.c"
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#include "third_party/udis86/libudis86/itab.c"
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#include "third_party/udis86/libudis86/syn-att.c"
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#include "third_party/udis86/libudis86/syn-intel.c"
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#include "third_party/udis86/libudis86/syn.c"
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#include "third_party/udis86/libudis86/udis86.c"
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////////////////////////////////
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//~ rjf: Instruction Type Functions
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@@ -62,84 +74,6 @@ dasm_inst_array_code_off_from_idx(DASM_InstArray *array, U64 idx)
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return off;
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}
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////////////////////////////////
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//~ rjf: Disassembly Decoding Function
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#include "third_party/udis86/config.h"
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#include "third_party/udis86/udis86.h"
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#include "third_party/udis86/libudis86/decode.c"
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#include "third_party/udis86/libudis86/itab.c"
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#include "third_party/udis86/libudis86/syn-att.c"
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#include "third_party/udis86/libudis86/syn-intel.c"
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#include "third_party/udis86/libudis86/syn.c"
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#include "third_party/udis86/libudis86/udis86.c"
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internal DASM_Info
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dasm_info_from_arch_addr_data(Arena *arena, U64 *bytes_processed_counter, Architecture arch, U64 addr, String8 data)
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{
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Temp scratch = scratch_begin(&arena, 1);
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//- rjf: decode
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DASM_InstChunkList inst_list = {0};
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String8List inst_strings = {0};
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switch(arch)
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{
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default:{}break;
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//- rjf: x86/x64 decoding
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case Architecture_x64:
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case Architecture_x86:
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{
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// rjf: grab context
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struct ud udc;
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ud_init(&udc);
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ud_set_mode(&udc, bit_size_from_arch(arch));
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ud_set_pc(&udc, addr);
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ud_set_input_buffer(&udc, data.str, data.size);
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ud_set_vendor(&udc, UD_VENDOR_ANY);
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ud_set_syntax(&udc, UD_SYN_INTEL);
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// rjf: disassemble
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U64 byte_process_start_off = 0;
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for(U64 off = 0; off < data.size;)
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{
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// rjf: disassemble one instruction
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U64 size = ud_disassemble(&udc);
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if(size == 0)
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{
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break;
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}
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// rjf: analyze
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struct ud_operand *first_op = (struct ud_operand *)ud_insn_opr(&udc, 0);
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U64 rel_voff = (first_op != 0 && first_op->type == UD_OP_JIMM) ? ud_syn_rel_target(&udc, first_op) : 0;
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// rjf: push
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String8 string = push_str8f(scratch.arena, "%s\n", udc.asm_buf);
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DASM_Inst inst = {off, rel_voff, r1u64(inst_strings.total_size, inst_strings.total_size+string.size-1)};
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dasm_inst_chunk_list_push(scratch.arena, &inst_list, 1024, &inst);
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str8_list_push(scratch.arena, &inst_strings, string);
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// rjf: increment
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off += size;
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if(bytes_processed_counter != 0 && (off-byte_process_start_off >= 1000))
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{
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ins_atomic_u64_add_eval(bytes_processed_counter, (off-byte_process_start_off));
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byte_process_start_off = off;
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}
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}
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}break;
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}
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//- rjf: fill result
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DASM_Info info = {0};
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info.text = str8_list_join(arena, &inst_strings, 0);
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info.insts = dasm_inst_array_from_chunk_list(arena, &inst_list);
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scratch_end(scratch);
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return info;
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}
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////////////////////////////////
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//~ rjf: Main Layer Initialization
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@@ -406,6 +340,8 @@ dasm_parse_thread__entry_point(void *p)
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ThreadNameF("[dasm] parse thread #%I64u", (U64)p);
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for(;;)
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{
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Temp scratch = scratch_begin(0, 0);
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//- rjf: get next request
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U128 hash = {0};
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U64 addr = 0;
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@@ -440,13 +376,89 @@ dasm_parse_thread__entry_point(void *p)
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data = hs_data_from_hash(hs_scope, hash);
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}
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//- rjf: data -> disassembly info
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//- rjf: data * arch * addr -> decode artifacts
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DASM_InstChunkList inst_list = {0};
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String8List inst_strings = {0};
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if(got_task)
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{
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switch(arch)
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{
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default:{}break;
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//- rjf: x86/x64 decoding
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case Architecture_x64:
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case Architecture_x86:
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{
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// rjf: grab context
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struct ud udc;
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ud_init(&udc);
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ud_set_mode(&udc, bit_size_from_arch(arch));
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ud_set_pc(&udc, addr);
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ud_set_input_buffer(&udc, data.str, data.size);
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ud_set_vendor(&udc, UD_VENDOR_ANY);
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ud_set_syntax(&udc, UD_SYN_INTEL);
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// rjf: disassemble
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U64 byte_process_start_off = 0;
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for(U64 off = 0; off < data.size;)
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{
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// rjf: disassemble one instruction
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U64 size = ud_disassemble(&udc);
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if(size == 0)
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{
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break;
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}
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// rjf: analyze
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struct ud_operand *first_op = (struct ud_operand *)ud_insn_opr(&udc, 0);
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U64 rel_voff = (first_op != 0 && first_op->type == UD_OP_JIMM) ? ud_syn_rel_target(&udc, first_op) : 0;
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// rjf: push
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String8 string = push_str8f(scratch.arena, "%s", udc.asm_buf);
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DASM_Inst inst = {off, rel_voff, r1u64(inst_strings.total_size + inst_strings.node_count,
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inst_strings.total_size + inst_strings.node_count + string.size)};
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dasm_inst_chunk_list_push(scratch.arena, &inst_list, 1024, &inst);
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str8_list_push(scratch.arena, &inst_strings, string);
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// rjf: increment
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off += size;
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}
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}break;
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}
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}
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//- rjf: artifacts -> value bundle
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Arena *info_arena = 0;
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DASM_Info info = {0};
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if(got_task && data.size != 0)
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if(got_task)
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{
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//- rjf: produce joined text
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Arena *text_arena = arena_alloc();
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StringJoin text_join = {0};
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text_join.sep = str8_lit("\n");
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String8 text = str8_list_join(text_arena, &inst_strings, &text_join);
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//- rjf: produce unique key for this disassembly's text
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U128 text_key = {0};
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{
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U64 hash_data[] =
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{
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hash.u64[0],
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hash.u64[1],
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addr,
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(U64)arch,
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0x4d534144,
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};
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text_key = hs_hash_from_data(str8((U8 *)hash_data, sizeof(hash_data)));
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}
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//- rjf: submit text data to hash store
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U128 text_hash = hs_submit_data(text_key, &text_arena, text);
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//- rjf: produce value bundle
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info_arena = arena_alloc();
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info = dasm_info_from_arch_addr_data(info_arena, 0, arch, addr, data);
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info.text_key = text_key;
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info.insts = dasm_inst_array_from_chunk_list(info_arena, &inst_list);
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}
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//- rjf: commit results to cache
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@@ -466,6 +478,7 @@ dasm_parse_thread__entry_point(void *p)
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}
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hs_scope_close(hs_scope);
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scratch_end(scratch);
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}
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}
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