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Diffstat (limited to 'lldb/source/Core/DumpDataExtractor.cpp')
-rw-r--r--lldb/source/Core/DumpDataExtractor.cpp246
1 files changed, 106 insertions, 140 deletions
diff --git a/lldb/source/Core/DumpDataExtractor.cpp b/lldb/source/Core/DumpDataExtractor.cpp
index b5e1071b72ae7..dbfedfae27a8c 100644
--- a/lldb/source/Core/DumpDataExtractor.cpp
+++ b/lldb/source/Core/DumpDataExtractor.cpp
@@ -1,4 +1,4 @@
-//===-- DumpDataExtractor.cpp -----------------------------------*- C++ -*-===//
+//===-- DumpDataExtractor.cpp ---------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
@@ -128,6 +128,104 @@ static lldb::offset_t DumpAPInt(Stream *s, const DataExtractor &data,
return offset;
}
+/// Dumps decoded instructions to a stream.
+static lldb::offset_t DumpInstructions(const DataExtractor &DE, Stream *s,
+ ExecutionContextScope *exe_scope,
+ offset_t start_offset,
+ uint64_t base_addr,
+ size_t number_of_instructions) {
+ offset_t offset = start_offset;
+
+ TargetSP target_sp;
+ if (exe_scope)
+ target_sp = exe_scope->CalculateTarget();
+ if (target_sp) {
+ DisassemblerSP disassembler_sp(
+ Disassembler::FindPlugin(target_sp->GetArchitecture(),
+ target_sp->GetDisassemblyFlavor(), nullptr));
+ if (disassembler_sp) {
+ lldb::addr_t addr = base_addr + start_offset;
+ lldb_private::Address so_addr;
+ bool data_from_file = true;
+ if (target_sp->GetSectionLoadList().ResolveLoadAddress(addr, so_addr)) {
+ data_from_file = false;
+ } else {
+ if (target_sp->GetSectionLoadList().IsEmpty() ||
+ !target_sp->GetImages().ResolveFileAddress(addr, so_addr))
+ so_addr.SetRawAddress(addr);
+ }
+
+ size_t bytes_consumed = disassembler_sp->DecodeInstructions(
+ so_addr, DE, start_offset, number_of_instructions, false,
+ data_from_file);
+
+ if (bytes_consumed) {
+ offset += bytes_consumed;
+ const bool show_address = base_addr != LLDB_INVALID_ADDRESS;
+ const bool show_bytes = true;
+ ExecutionContext exe_ctx;
+ exe_scope->CalculateExecutionContext(exe_ctx);
+ disassembler_sp->GetInstructionList().Dump(s, show_address, show_bytes,
+ &exe_ctx);
+ }
+ }
+ } else
+ s->Printf("invalid target");
+
+ return offset;
+}
+
+/// Prints the specific escape sequence of the given character to the stream.
+/// If the character doesn't have a known specific escape sequence (e.g., '\a',
+/// '\n' but not generic escape sequences such as'\x12'), this function will
+/// not modify the stream and return false.
+static bool TryDumpSpecialEscapedChar(Stream &s, const char c) {
+ switch (c) {
+ case '\033':
+ // Common non-standard escape code for 'escape'.
+ s.Printf("\\e");
+ return true;
+ case '\a':
+ s.Printf("\\a");
+ return true;
+ case '\b':
+ s.Printf("\\b");
+ return true;
+ case '\f':
+ s.Printf("\\f");
+ return true;
+ case '\n':
+ s.Printf("\\n");
+ return true;
+ case '\r':
+ s.Printf("\\r");
+ return true;
+ case '\t':
+ s.Printf("\\t");
+ return true;
+ case '\v':
+ s.Printf("\\v");
+ return true;
+ case '\0':
+ s.Printf("\\0");
+ return true;
+ default:
+ return false;
+ }
+}
+
+/// Dump the character to a stream. A character that is not printable will be
+/// represented by its escape sequence.
+static void DumpCharacter(Stream &s, const char c) {
+ if (TryDumpSpecialEscapedChar(s, c))
+ return;
+ if (llvm::isPrint(c)) {
+ s.PutChar(c);
+ return;
+ }
+ s.Printf("\\x%2.2x", c);
+}
+
lldb::offset_t lldb_private::DumpDataExtractor(
const DataExtractor &DE, Stream *s, offset_t start_offset,
lldb::Format item_format, size_t item_byte_size, size_t item_count,
@@ -147,44 +245,9 @@ lldb::offset_t lldb_private::DumpDataExtractor(
offset_t offset = start_offset;
- if (item_format == eFormatInstruction) {
- TargetSP target_sp;
- if (exe_scope)
- target_sp = exe_scope->CalculateTarget();
- if (target_sp) {
- DisassemblerSP disassembler_sp(Disassembler::FindPlugin(
- target_sp->GetArchitecture(),
- target_sp->GetDisassemblyFlavor(), nullptr));
- if (disassembler_sp) {
- lldb::addr_t addr = base_addr + start_offset;
- lldb_private::Address so_addr;
- bool data_from_file = true;
- if (target_sp->GetSectionLoadList().ResolveLoadAddress(addr, so_addr)) {
- data_from_file = false;
- } else {
- if (target_sp->GetSectionLoadList().IsEmpty() ||
- !target_sp->GetImages().ResolveFileAddress(addr, so_addr))
- so_addr.SetRawAddress(addr);
- }
-
- size_t bytes_consumed = disassembler_sp->DecodeInstructions(
- so_addr, DE, start_offset, item_count, false, data_from_file);
-
- if (bytes_consumed) {
- offset += bytes_consumed;
- const bool show_address = base_addr != LLDB_INVALID_ADDRESS;
- const bool show_bytes = true;
- ExecutionContext exe_ctx;
- exe_scope->CalculateExecutionContext(exe_ctx);
- disassembler_sp->GetInstructionList().Dump(s, show_address,
- show_bytes, &exe_ctx);
- }
- }
- } else
- s->Printf("invalid target");
-
- return offset;
- }
+ if (item_format == eFormatInstruction)
+ return DumpInstructions(DE, s, exe_scope, start_offset, base_addr,
+ item_count);
if ((item_format == eFormatOSType || item_format == eFormatAddressInfo) &&
item_byte_size > 8)
@@ -284,43 +347,14 @@ lldb::offset_t lldb_private::DumpDataExtractor(
const uint64_t ch = DE.GetMaxU64Bitfield(&offset, item_byte_size,
item_bit_size, item_bit_offset);
- if (isprint(ch))
+ if (llvm::isPrint(ch))
s->Printf("%c", (char)ch);
else if (item_format != eFormatCharPrintable) {
- switch (ch) {
- case '\033':
- s->Printf("\\e");
- break;
- case '\a':
- s->Printf("\\a");
- break;
- case '\b':
- s->Printf("\\b");
- break;
- case '\f':
- s->Printf("\\f");
- break;
- case '\n':
- s->Printf("\\n");
- break;
- case '\r':
- s->Printf("\\r");
- break;
- case '\t':
- s->Printf("\\t");
- break;
- case '\v':
- s->Printf("\\v");
- break;
- case '\0':
- s->Printf("\\0");
- break;
- default:
+ if (!TryDumpSpecialEscapedChar(*s, ch)) {
if (item_byte_size == 1)
s->Printf("\\x%2.2x", (uint8_t)ch);
else
s->Printf("%" PRIu64, ch);
- break;
}
} else {
s->PutChar(NON_PRINTABLE_CHAR);
@@ -375,42 +409,7 @@ lldb::offset_t lldb_private::DumpDataExtractor(
s->PutChar('\'');
for (uint32_t i = 0; i < item_byte_size; ++i) {
uint8_t ch = (uint8_t)(uval64 >> ((item_byte_size - i - 1) * 8));
- if (isprint(ch))
- s->Printf("%c", ch);
- else {
- switch (ch) {
- case '\033':
- s->Printf("\\e");
- break;
- case '\a':
- s->Printf("\\a");
- break;
- case '\b':
- s->Printf("\\b");
- break;
- case '\f':
- s->Printf("\\f");
- break;
- case '\n':
- s->Printf("\\n");
- break;
- case '\r':
- s->Printf("\\r");
- break;
- case '\t':
- s->Printf("\\t");
- break;
- case '\v':
- s->Printf("\\v");
- break;
- case '\0':
- s->Printf("\\0");
- break;
- default:
- s->Printf("\\x%2.2x", ch);
- break;
- }
- }
+ DumpCharacter(*s, ch);
}
s->PutChar('\'');
} break;
@@ -425,40 +424,7 @@ lldb::offset_t lldb_private::DumpDataExtractor(
s->PutChar('\"');
while (const char c = *cstr) {
- if (isprint(c)) {
- s->PutChar(c);
- } else {
- switch (c) {
- case '\033':
- s->Printf("\\e");
- break;
- case '\a':
- s->Printf("\\a");
- break;
- case '\b':
- s->Printf("\\b");
- break;
- case '\f':
- s->Printf("\\f");
- break;
- case '\n':
- s->Printf("\\n");
- break;
- case '\r':
- s->Printf("\\r");
- break;
- case '\t':
- s->Printf("\\t");
- break;
- case '\v':
- s->Printf("\\v");
- break;
- default:
- s->Printf("\\x%2.2x", c);
- break;
- }
- }
-
+ DumpCharacter(*s, c);
++cstr;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-03 18:03:09 +0000