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llvm-project/lld/test/COFF/pdb-scopes.test

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[PDB] Fill in "Parent" and "End" fields of scope-like symbol records Summary: There are a variety of records that open scopes: function scopes, block scopes, and inlined call site scopes. These symbol records contain Parent and End fields with the offsets of other symbol records. The End field contains the offset of the matching S_END or S_INLINESITE_END record. The Parent field contains the offset of the parent record, or 0 if this is a top-level scope (i.e. a function). With this change, `llvm-pdbutil pretty -all` no longer crashes on PDBs produced by LLD. I haven't tried a real debugger yet. Reviewers: zturner, ruiu Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D34898 llvm-svn: 307278
2017-07-07 00:39:32 +08:00
Consider this program:
$ cat a.c
void g(int x) {}
void f(int x);
int main(int argc) {
if (argc) {
int x = 42;
f(x);
} else {
int y = 13;
f(y);
}
}
$ cat b.c
extern void g();
void f(int x) {
if (x) {
int y = x + 3;
g(y);
} else {
int w = x + 4;
g(w);
}
}
This program is interesting because there are two TUs, and each TU has nested
scopes. Make sure we get the right parent and end offsets.
RUN: yaml2obj %S/Inputs/pdb-scopes-a.yaml -o %t-a.obj
RUN: yaml2obj %S/Inputs/pdb-scopes-b.yaml -o %t-b.obj
RUN: lld-link %t-a.obj %t-b.obj -debug -entry:main -nodefaultlib -out:%t.exe -pdb:%t.pdb
RUN: llvm-pdbutil dump -symbols %t.pdb | FileCheck %s
Fix pdb-scopes.test llvm-svn: 307280
2017-07-07 00:41:15 +08:00
CHECK-LABEL: Mod 0000 | `{{.*}}pdb-scopes.test.tmp-a.obj`:
[PDB] Fix linking of function symbols and local variables. The compiler outputs PROC32_ID symbols into the object files for functions, and these symbols have an embedded type index which, when copied to the PDB, refer to the IPI stream. However, the symbols themselves are also converted into regular symbols (e.g. S_GPROC32_ID -> S_GPROC32), and type indices in the regular symbol records refer to the TPI stream. So this patch applies two fixes to function records. 1. It converts ID symbols to the proper non-ID record type. 2. After remapping the type index from the object file's index space to the PDB file/IPI stream's index space, it then remaps that index to the TPI stream's index space by. Besides functions, during the remapping process we were also discarding symbol record types which we did not recognize. In particular, we were discarding S_BPREL32 records, which is what MSVC uses to describe local variables on the stack. So this patch fixes that as well by copying them to the PDB. Differential Revision: https://reviews.llvm.org/D36426 llvm-svn: 310394
2017-08-09 02:34:44 +08:00
CHECK: 104 | S_GPROC32 [size = 44] `g`
[PDB] Fill in "Parent" and "End" fields of scope-like symbol records Summary: There are a variety of records that open scopes: function scopes, block scopes, and inlined call site scopes. These symbol records contain Parent and End fields with the offsets of other symbol records. The End field contains the offset of the matching S_END or S_INLINESITE_END record. The Parent field contains the offset of the parent record, or 0 if this is a top-level scope (i.e. a function). With this change, `llvm-pdbutil pretty -all` no longer crashes on PDBs produced by LLD. I haven't tried a real debugger yet. Reviewers: zturner, ruiu Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D34898 llvm-svn: 307278
2017-07-07 00:39:32 +08:00
CHECK: parent = 0, end = 196, addr = 0002:0000, code size = 5
CHECK: debug start = 4, debug end = 4, flags = none
CHECK: 180 | S_REGREL32 [size = 16] `x`
CHECK: 196 | S_END [size = 4]
[PDB] Fix linking of function symbols and local variables. The compiler outputs PROC32_ID symbols into the object files for functions, and these symbols have an embedded type index which, when copied to the PDB, refer to the IPI stream. However, the symbols themselves are also converted into regular symbols (e.g. S_GPROC32_ID -> S_GPROC32), and type indices in the regular symbol records refer to the TPI stream. So this patch applies two fixes to function records. 1. It converts ID symbols to the proper non-ID record type. 2. After remapping the type index from the object file's index space to the PDB file/IPI stream's index space, it then remaps that index to the TPI stream's index space by. Besides functions, during the remapping process we were also discarding symbol record types which we did not recognize. In particular, we were discarding S_BPREL32 records, which is what MSVC uses to describe local variables on the stack. So this patch fixes that as well by copying them to the PDB. Differential Revision: https://reviews.llvm.org/D36426 llvm-svn: 310394
2017-08-09 02:34:44 +08:00
CHECK: 200 | S_GPROC32 [size = 44] `main`
[PDB] Fill in "Parent" and "End" fields of scope-like symbol records Summary: There are a variety of records that open scopes: function scopes, block scopes, and inlined call site scopes. These symbol records contain Parent and End fields with the offsets of other symbol records. The End field contains the offset of the matching S_END or S_INLINESITE_END record. The Parent field contains the offset of the parent record, or 0 if this is a top-level scope (i.e. a function). With this change, `llvm-pdbutil pretty -all` no longer crashes on PDBs produced by LLD. I haven't tried a real debugger yet. Reviewers: zturner, ruiu Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D34898 llvm-svn: 307278
2017-07-07 00:39:32 +08:00
CHECK: parent = 0, end = 384, addr = 0002:0016, code size = 58
CHECK: debug start = 8, debug end = 53, flags = none
CHECK: 276 | S_REGREL32 [size = 20] `argc`
CHECK: 296 | S_BLOCK32 [size = 24] ``
CHECK: parent = 200, end = 336
CHECK: code size = 17, addr = 0002:0031
CHECK: 320 | S_REGREL32 [size = 16] `x`
CHECK: 336 | S_END [size = 4]
CHECK: 340 | S_BLOCK32 [size = 24] ``
CHECK: parent = 200, end = 380
CHECK: code size = 17, addr = 0002:0050
CHECK: 364 | S_REGREL32 [size = 16] `y`
CHECK: 380 | S_END [size = 4]
CHECK: 384 | S_END [size = 4]
Fix pdb-scopes.test llvm-svn: 307280
2017-07-07 00:41:15 +08:00
CHECK-LABEL: Mod 0001 | `{{.*}}pdb-scopes.test.tmp-b.obj`:
[PDB] Fix linking of function symbols and local variables. The compiler outputs PROC32_ID symbols into the object files for functions, and these symbols have an embedded type index which, when copied to the PDB, refer to the IPI stream. However, the symbols themselves are also converted into regular symbols (e.g. S_GPROC32_ID -> S_GPROC32), and type indices in the regular symbol records refer to the TPI stream. So this patch applies two fixes to function records. 1. It converts ID symbols to the proper non-ID record type. 2. After remapping the type index from the object file's index space to the PDB file/IPI stream's index space, it then remaps that index to the TPI stream's index space by. Besides functions, during the remapping process we were also discarding symbol record types which we did not recognize. In particular, we were discarding S_BPREL32 records, which is what MSVC uses to describe local variables on the stack. So this patch fixes that as well by copying them to the PDB. Differential Revision: https://reviews.llvm.org/D36426 llvm-svn: 310394
2017-08-09 02:34:44 +08:00
CHECK: 104 | S_GPROC32 [size = 44] `f`
[PDB] Fill in "Parent" and "End" fields of scope-like symbol records Summary: There are a variety of records that open scopes: function scopes, block scopes, and inlined call site scopes. These symbol records contain Parent and End fields with the offsets of other symbol records. The End field contains the offset of the matching S_END or S_INLINESITE_END record. The Parent field contains the offset of the parent record, or 0 if this is a top-level scope (i.e. a function). With this change, `llvm-pdbutil pretty -all` no longer crashes on PDBs produced by LLD. I haven't tried a real debugger yet. Reviewers: zturner, ruiu Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D34898 llvm-svn: 307278
2017-07-07 00:39:32 +08:00
CHECK: parent = 0, end = 284, addr = 0002:0080, code size = 62
CHECK: debug start = 8, debug end = 57, flags = none
CHECK: 180 | S_REGREL32 [size = 16] `x`
CHECK: 196 | S_BLOCK32 [size = 24] ``
CHECK: parent = 104, end = 236
CHECK: code size = 20, addr = 0002:0095
CHECK: 220 | S_REGREL32 [size = 16] `y`
CHECK: 236 | S_END [size = 4]
CHECK: 240 | S_BLOCK32 [size = 24] ``
CHECK: parent = 104, end = 280
CHECK: code size = 20, addr = 0002:0117
CHECK: 264 | S_REGREL32 [size = 16] `w`
CHECK: 280 | S_END [size = 4]
CHECK: 284 | S_END [size = 4]
CHECK-LABEL: Mod 0002 | `* Linker *`: