Individual dwarf records. Each one will be encoded as an entry in
the .debug_info section.
Moduleghc-10.0.0.20260917GHC2024
GHC.CmmToAsm.Dwarf.Types
Synopsis
- data DwarfInfo
- value pprDwarfInfo
- value pprAbbrevDecls
- data DwarfARange
- value pprDwarfARanges
- data DwarfFrame
- data DwarfFrameProc
- data DwarfFrameBlock
- value pprDwarfFrame
- value pprByte
- value pprHalf
- value pprData4'
- value pprDwWord
- value pprWord
- value pprLEBWord
- value pprLEBInt
- value wordAlign
- value sectionOffset
- Packageghc-10.0.0.20260917
- Exports18
- LanguageGHC2024
- LicenceBSD-3-Clause
- SourceTypes.hs
Dwarf information
Generate assembly for DWARF data
Abbreviation declaration. This explains the binary encoding we use for representing DwarfInfo. Be aware that this must be updated along with pprDwarfInfo.
Dwarf address range table
A DWARF address range. This is used by the debugger to quickly locate which compilation unit a given address belongs to. This type assumes a non-segmented address-space.
Constructors
Print assembler directives corresponding to a DWARF .debug_aranges
address table entry.
Dwarf frame
Information about unwind instructions for a procedure. This corresponds to a "Common Information Entry" (CIE) in DWARF.
Constructors
Unwind instructions for an individual procedure. Corresponds to a "Frame Description Entry" (FDE) in DWARF.
Constructors
DwarfFrameProcdwFdeProc :: CLabeldwFdeHasInfo :: BooldwFdeBlocks :: [DwarfFrameBlock]List of blocks. Order must match asm!
Unwind instructions for a block. Will become part of the containing FDE.
Constructors
DwarfFrameBlockdwFdeBlkHasInfo :: BooldwFdeUnwind :: [UnwindPoint]these unwind points must occur in the same order as they occur in the block
Instances1OutputableP
OutputableP Platform DwarfFrameBlockDefined in ghc-10.0.0.20260917 · GHC.CmmToAsm.Dwarf.Types
Header for the .debug_frame section. Here we emit the "Common
Information Entry" record that establishes general call frame
parameters and the default stack layout.
Utilities
Assembly for a single byte of constant DWARF data
Assembly for a two-byte constant integer
Assembly for 4 bytes of dynamic DWARF data
Assembly for a DWARF word of dynamic data. This means 32 bit, as we are generating 32 bit DWARF.
Assembly for a machine word of dynamic data. Depends on the architecture we are currently generating code for.
Prints a number in "little endian base 128" format. The idea is to optimize for small numbers by stopping once all further bytes would be 0. The highest bit in every byte signals whether there are further bytes to read.
Same as pprLEBWord, but for a signed number
Align assembly at (machine) word boundary
Generate an offset into another section. This is tricky because this is handled differently depending on platform: Mac Os expects us to calculate the offset using assembler arithmetic. Linux expects us to just reference the target directly, and will figure out on their own that we actually need an offset. Finally, Windows has a special directive to refer to relative offsets. Fun.