Base class for streamers that emit assembly text.
Synopsis
Declared in <llvm/MC/MCAsmStreamer.h>
class MCAsmBaseStreamer
: public MCStreamerBase Classes
Name |
Description |
Streaming machine code generation interface. |
Member Functions
Name |
Description |
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Deleted copy assignment. |
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Add a textual comment. |
Retrieve the current frame info if one is available and it is not yet closed. Otherwise, issue an error and return null. |
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Emit a blank line to a .s file to pretty it up. |
Add a comment showing the encoding of an instruction. |
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Add explicit comment T. T is required to be a valid comment in the output and does not need to be escaped. |
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Start emitting COFF symbol definition |
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Emit the absolute difference between two symbols. |
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Emit the absolute difference between two symbols encoded with ULEB128. |
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Emit a .addrsig directive starting an address‐significance table. |
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Add |
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Emit an assignment of |
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Functionally identical to EmitBytes. When emitting textual assembly, this method uses .byte directives instead of .ascii or .asciz for readability. |
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Emit/Specify Mach‐O build version command. |
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Enable aligned instruction bundling with the given bundle size. |
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The following instructions are a bundle‐locked group. |
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Ends a bundle‐locked group. |
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Emit the bytes in |
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Emit a .cfi_adjust_cfa_offset directive. |
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Emit a .cfi_b_key_frame directive. |
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Emit a .cfi_def_cfa directive. |
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Emit a .cfi_def_cfa_offset directive. |
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Emit a .cfi_def_cfa_register directive. |
Emit a .cfi_endproc directive. |
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Emit a .cfi_escape directive with raw DWARF CFI bytes. |
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Emit a .cfi_gnu_args_size directive. |
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Emit a .cfi_llvm_def_aspace_cfa directive. |
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Emit a .cfi_llvm_register_pair directive. |
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Emit a .cfi_llvm_vector_offset directive. |
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Emit a .cfi_llvm_vector_register_mask directive. |
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Emit a .cfi_llvm_vector_registers directive. |
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When emitting an object file, create and emit a real label. When emitting textual assembly, this should do nothing to avoid polluting our output. |
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Emit a .cfi_label directive. |
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Emit a .cfi_lsda directive. |
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Emit a .cfi_mte_tagged_frame directive. |
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Emit a .cfi_negate_ra_state directive. |
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Emit a .cfi_negate_ra_state_with_pc directive. |
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Emit a .cfi_offset directive. |
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Emit a .cfi_personality directive. |
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Emit a .cfi_register directive. |
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Emit a .cfi_rel_offset directive. |
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Emit a .cfi_remember_state directive. |
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Emit a .cfi_restore directive. |
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Emit a .cfi_restore_state directive. |
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Emit a .cfi_return_column directive. |
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Emit a .cfi_same_value directive. |
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Select which CFI sections to emit. |
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Emit a .cfi_signal_frame directive. |
Emit a .cfi_startproc directive. |
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Emit a .cfi_undefined directive. |
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Emit a .cfi_val_offset directive. |
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Emit a .cfi_window_save directive. |
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Emit a call‐graph profile edge. |
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Emits a COFF image relative relocation. |
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Emit a COFF .safeseh directive for |
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Emits the physical number of the section containing the given symbol as assigned during object writing (i.e., this is not a runtime relocation). |
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Emits the offset of the symbol from the beginning of the section during object writing (i.e., this is not a runtime relocation). |
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Emits a COFF section relative relocation. |
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Emits a COFF section index. |
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Emits the symbol table index of a Symbol into the current section. |
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Emit the storage class of the symbol. |
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Emit the type of the symbol. |
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This implements the CodeView '.cv_fpo_data' assembler directive. |
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This implements the CodeView '.cv_filechecksumoffset' assembler directive. |
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This implements the CodeView '.cv_filechecksums' assembler directive. |
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Associate a filename and checksum with a CodeView logical file number. |
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Introduces a function id for use with .cv_loc. |
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This implements the CodeView '.cv_inline_linetable' assembler directive. |
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Introduces an inline call site id for use with .cv_loc. Includes extra information for inline line table generation. |
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This implements the CodeView '.cv_linetable' assembler directive. |
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This implements the CodeView '.cv_loc' assembler directive. |
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This implements the CodeView '.cv_stringtable' assembler directive. |
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Emit nops until the byte alignment |
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Emit a common symbol. |
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Emit an assignment of |
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Emit a Mach‐O build‐version command for the Darwin target variant. |
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Note in the output the specified region |
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Emit a raw DWARF line‐address advance from |
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Specify the "root" file of the compilation, using the ".file 0" extension. |
Associate a filename with a specified logical file number. This implements the DWARF2 '.file 4 "foo.c"' assembler directive. |
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Emit the debug line end entry. |
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Emit the debug line start label. |
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This implements the DWARF2 '.loc fileno lineno ...' assembler directive. |
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This is same as emitDwarfLocDirective, except it has the capability to add inlined_at information. |
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This implements the '.loc_label Name' directive. |
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Copy EH‐related symbol attributes from |
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Emit an ELF .size directive. |
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Emit an ELF .symver directive. |
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Emit added explicit comments. |
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Emit a .gnu_attribute directive. |
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Emit the "identifiers" directive. This implements the '.ident "version foo"' assembler directive. |
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Emit the given |
Emit |
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Emit |
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Emit |
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Emit |
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Special case of EmitValue that avoids the client having to pass in a MCExpr for constant integers & prints in Hex format for certain modes. |
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Emit a constant integer in hex, padded to |
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Emit a Linker Optimization Hint (LOH) directive. |
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Emit a label for |
Emit a temporary label and record it in the DWARF line table. |
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Emit the given list |
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Emit a local common (.lcomm) symbol. |
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Emit |
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Align up to |
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Emit the a pseudo probe into the current section. |
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Print |
Dump |
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Record a relocation described by the .reloc directive. |
Special case of EmitSLEB128Value that avoids the client having to pass in a MCExpr for constant integers. |
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Emit |
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Emit a .subsection_via_symbols directive. |
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Add the given |
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Set the |
Special case of EmitValue that avoids the client having to pass in a MCExpr for MCSymbols. |
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Emit a |
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Emit a thread local bss (.tbss) symbol. |
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Emit the target triple into the output. |
Special case of EmitULEB128Value that avoids the client having to pass in a MCExpr for constant integers. |
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Emit |
Emit the expression |
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Emit the expression |
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Emit some number of copies of |
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Emit some number of copies of |
Emit version directives appropriate for |
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Specify the Mach‐O minimum deployment target version. |
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Emit an weak reference from |
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Emit a .seh_stackalloc directive. |
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Emit a .seh_startepilogue directive. |
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Emit a .seh_endepilogue directive. |
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Emit a .seh_endproc directive ending a Windows CFI procedure. |
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Emit a .seh_endprologue directive. |
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Emit a .seh_endfunclet directive for .xdata sizing. |
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Emit a .seh_push2regs directive. |
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Emit a .seh_pushframe directive. |
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Emit a .seh_pushreg directive. |
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Emit a .seh_savereg directive. |
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Emit a .seh_savexmm directive. |
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Emit a .seh_setframe directive. |
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Emit a .seh_splitchained directive. |
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Emit a .seh_proc directive starting a Windows CFI procedure. |
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Emit a .seh_unwindv2start directive. |
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Emit a .seh_unwindversion directive. |
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Emit a .seh_handler directive. |
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Emit a .seh_handlerdata directive. |
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Emit a C_INFO symbol with XCOFF embedded metadata to the .info section. |
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Emit an XCOFF .except directive which adds information about a trap instruction to the object file exception section |
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Emits an lcomm directive with XCOFF csect information. |
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Emit a XCOFF .ref directive which creates R_REF type entry in the relocation table for one or more symbols. |
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Emit a XCOFF .rename directive which creates a synonym for an illegal or undesirable name. |
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Emit a symbol's linkage and visibility with a linkage directive for XCOFF. |
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Emit the zerofill section and an optional symbol. |
Emit NumBytes worth of zeros. This function properly handles data in virtual sections. |
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Marks the end of the symbol definition. |
End |
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Finish emission of machine code. |
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Streamer specific finalization. |
Return whether the assembler may insert padding automatically. |
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Return the assembler used by this streamer. |
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Return the assembler, or null if this streamer has none. |
Return the .pdata section associated with |
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Get the .xdata section used for the given section. |
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Return a raw_ostream that comments can be written to. Unlike AddComment, you are required to terminate comments with if you use this method. |
Return the MC context this streamer is bound to. |
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Return the fixed size of the current data fragment. |
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Return the fragment currently being appended to. |
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Return the current section that the streamer is emitting code to. |
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Return only the current section, ignoring the subsection index. |
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Return the Windows EH epilog currently being processed, or null. |
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Return the default unwind version for new WinCFI frames. |
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Return the collected DWARF CFI frames. |
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Return the DWARF line‐table symbol for compile unit |
Return the installed LFI rewriter, or null if none. |
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Returns the mnemonic for |
Return the number of DWARF CFI frames collected so far. |
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Return the number of Windows EH frames collected so far. |
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Return the previous section that the streamer is emitting code to. |
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Return the parser's current token location, if available. |
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Return the attached target streamer, or null if none. |
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Return whether assembler info may be used during parsing. |
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Return the collected Windows EH frames. |
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Return true if this asm streamer supports emitting unformatted text to the .s file with EmitRawText. |
Return true if a DWARF CFI frame has been started but not ended. |
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Create the default sections and set the initial one. |
Return true if SEH directives are being recorded for an epilog. |
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Is the integrated assembler required for this streamer to function correctly? |
Return true if this streamer emits an object file. |
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Return true if this streamer supports verbose assembly and if it is enabled. |
Returns true if a WinCFI prolog has been completed (.seh_endprologue) in the current frame. |
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Return true if |
Emit a special value of 0xffffffff if producing 64‐bit debugging info. |
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Restore the current and previous section from the section stack. Calls changeSection as needed. |
Save the current and previous section on the section stack. |
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State management |
Set whether the assembler may insert padding automatically. |
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Set the default unwind version for new WinCFI frames. |
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Take ownership of LFI rewriter |
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Point at the parser's current token location for diagnostics. |
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Take ownership of target streamer |
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Set whether assembler info may be used during parsing. |
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Similar to switchSection, but does not print the section directive. |
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Associate a filename with a specified logical file number. |
Visit symbols referenced by |
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Visit a symbol used by a streamed expression or directive. |
Protected Member Functions
Name |
Description |
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Construct an assembly base streamer. |
Append fragment |
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This is called by popSection and switchSection, if the current section changes. |
Returns true if the .cv_loc directive is in the right section. |
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Target‐specific implementation of .cfi_endproc. |
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Target‐specific implementation of .cfi_startproc. |
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Implementation of emitRawText, used by assembly streamers. |
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Return the current Windows EH frame, or null if none is active. |
Protected Data Members
Name |
Description |
Assembler used by this streamer for encoding and layout. |
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Stream that appends comment text into CommentToEmit. |
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Buffer holding comments pending emission. |
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Fragment currently being appended to. |
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Symbol of the current epilog for which we are processing SEH directives. |
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DWARF CFI frames collected while streaming. |
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True if this streamer is emitting an object file rather than assembly. |
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Optional LFI rewriter applied to emitted instructions. |
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Discarding stream used when an object writer must be created. |
Non-Member Functions
Name |
Description |
Emit LFI bundle‐alignment mode for the current target, if required. |
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Emit the ELF note section that identifies an LFI object file. |
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Initialize |
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Emit the common part of the DWARF 5 range/locations list tables header. |
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