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1978c21d96
The current tokenize-whole-file approach has a few limitations. * Lack of state information: `maybeSplitExpr` is needed to parse expressions. It's infeasible to add new states to behave more like GNU ld. * `readInclude` may insert tokens in the middle, leading to a time complexity issue with N-nested `INCLUDE`. * line/column information for diagnostics are inaccurate, especially after an `INCLUDE`. * `getLineNumber` cannot be made more efficient without significant code complexity and memory consumption. https://reviews.llvm.org/D104137 The patch switches to a traditional lexer that generates tokens lazily. * `atEOF` behavior is modified: we need to call `peek` to determine EOF. * `peek` and `next` cannot call `setError` upon `atEOF`. * Since `consume` no longer reports an error upon `atEOF`, the idiom `while (!errorCount() && !consume(")"))` would cause a dead loop. Use `while (peek() != ")" && !atEOF()) { ... } expect(")")` instead. * An include stack is introduced to handle `readInclude`. This can be utilized to address #93947 properly. * `tokens` and `pos` are removed. * `commandString` is reimplemented. Since it is used in -Map output, `\n` needs to be replaced with space. Pull Request: https://github.com/llvm/llvm-project/pull/100493
47 lines
2.5 KiB
Plaintext
47 lines
2.5 KiB
Plaintext
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %p/Inputs/map-file2.s -o %t.o
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# RUN: ld.lld -o %t %t.o -Map=%t.map --script %s
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# RUN: FileCheck -strict-whitespace %s < %t.map
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SECTIONS {
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. = 0x1000;
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.aaa : { *(.aaa.*) }
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.bbb : AT(0x2000) { *(.bbb.*) }
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.ccc : AT(0x3000) { *(.ccc.*) }
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. += 0x100;
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.ddd : {
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BYTE(0x11)
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. += 0x100;
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*(.ddd.*)
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}
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.text : { *(.text.*) }
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}
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# CHECK: VMA LMA Size Align Out In Symbol
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# CHECK-NEXT: 0 0 1000 1 . = 0x1000
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# CHECK-NEXT: 1000 1000 8 1 .aaa
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# CHECK-NEXT: 1000 1000 8 1 {{.*}}{{/|\\}}map-file2.test.tmp.o:(.aaa)
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# CHECK-NEXT: 1008 2000 8 1 .bbb
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# CHECK-NEXT: 1008 2000 8 1 {{.*}}{{/|\\}}map-file2.test.tmp.o:(.bbb)
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# CHECK-NEXT: 1010 3000 8 1 .ccc
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# CHECK-NEXT: 1010 3000 8 1 {{.*}}{{/|\\}}map-file2.test.tmp.o:(.ccc)
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# CHECK-NEXT: 1018 3008 100 1 . += 0x100
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# CHECK-NEXT: 1118 3108 109 1 .ddd
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# CHECK-NEXT: 1118 3108 1 1 BYTE(0x11)
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# CHECK-NEXT: 1119 3109 100 1 . += 0x100
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# CHECK-NEXT: 1219 3209 8 1 {{.*}}{{/|\\}}map-file2.test.tmp.o:(.ddd)
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# CHECK-NEXT: 1228 3218 34 8 .eh_frame
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# CHECK-NEXT: 1228 3218 30 1 {{.*}}{{/|\\}}map-file2.test.tmp.o:(.eh_frame+0x0)
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# CHECK-NEXT: 125c 324c 1 4 .text
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# CHECK-NEXT: 125c 324c 1 4 {{.*}}{{/|\\}}map-file2.test.tmp.o:(.text)
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# CHECK-NEXT: 125c 324c 0 1 _start
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# CHECK-NEXT: 125c 324c 0 1 f(int)
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# CHECK-NEXT: 0 0 8 1 .comment
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# CHECK-NEXT: 0 0 8 1 <internal>:(.comment)
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# CHECK-NEXT: 0 0 48 8 .symtab
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# CHECK-NEXT: 0 0 48 8 <internal>:(.symtab)
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# CHECK-NEXT: 0 0 48 1 .shstrtab
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# CHECK-NEXT: 0 0 48 1 <internal>:(.shstrtab)
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# CHECK-NEXT: 0 0 e 1 .strtab
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# CHECK-NEXT: 0 0 e 1 <internal>:(.strtab)
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