diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/symbol_files.md | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/docs/symbol_files.md b/docs/symbol_files.md index 90782016..237b6567 100644 --- a/docs/symbol_files.md +++ b/docs/symbol_files.md @@ -100,12 +100,17 @@ the file; it may contain spaces. A `FUNC` record describes a source-language function. It has the form: -> `FUNC` _address_ _size_ _parameter\_size_ _name_ +> `FUNC` _[m]_ _address_ _size_ _parameter\_size_ _name_ -For example: `FUNC c184 30 0 nsQueryInterfaceWithError::operator()(nsID const&, +For example: `FUNC m c184 30 0 nsQueryInterfaceWithError::operator()(nsID const&, void**) const ` +The _m_ field is optional. If present it indicates that multiple symbols +reference this function's instructions. (In which case, only one symbol name is +mentioned within the breakpad file.) Multiple symbols referencing the same +instructions may occur due to identical code folding by the linker. + The _address_ and _size_ fields are hexadecimal numbers indicating the start address and length in bytes of the machine code instructions the function occupies. (Breakpad symbol files cannot accurately describe functions whose code @@ -158,9 +163,9 @@ A `PUBLIC` record describes a publicly visible linker symbol, such as that used to identify an assembly language entry point or region of memory. It has the form: -> PUBLIC _address_ _parameter\_size_ _name_ +> PUBLIC _[m]_ _address_ _parameter\_size_ _name_ -For example: `PUBLIC 2160 0 Public2_1 +For example: `PUBLIC m 2160 0 Public2_1 ` The Breakpad processor essentially treats a `PUBLIC` record as defining a @@ -168,6 +173,11 @@ function with no line number data and an indeterminate size: the code extends to the next address mentioned. If a given address is covered by both a `PUBLIC` record and a `FUNC` record, the processor uses the `FUNC` data. +The _m_ field is optional. If present it indicates that multiple symbols +reference this function's instructions. (In which case, only one symbol name is +mentioned within the breakpad file.) Multiple symbols referencing the same +instructions may occur due to identical code folding by the linker. + The _address_ field is a hexadecimal number indicating the symbol's address, relative to the module's load address. |