mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 18:29:46 +00:00
Patch by Ben Gamari! This redefines the `prefix` attribute introduced previously and introduces a `prologue` attribute. There are a two primary usecases that these attributes aim to serve, 1. Function prologue sigils 2. Function hot-patching: Enable the user to insert `nop` operations at the beginning of the function which can later be safely replaced with a call to some instrumentation facility 3. Runtime metadata: Allow a compiler to insert data for use by the runtime during execution. GHC is one example of a compiler that needs this functionality for its tables-next-to-code functionality. Previously `prefix` served cases (1) and (2) quite well by allowing the user to introduce arbitrary data at the entrypoint but before the function body. Case (3), however, was poorly handled by this approach as it required that prefix data was valid executable code. Here we redefine the notion of prefix data to instead be data which occurs immediately before the function entrypoint (i.e. the symbol address). Since prefix data now occurs before the function entrypoint, there is no need for the data to be valid code. The previous notion of prefix data now goes under the name "prologue data" to emphasize its duality with the function epilogue. The intention here is to handle cases (1) and (2) with prologue data and case (3) with prefix data. References ---------- This idea arose out of discussions[1] with Reid Kleckner in response to a proposal to introduce the notion of symbol offsets to enable handling of case (3). [1] http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-May/073235.html Test Plan: testsuite Differential Revision: http://reviews.llvm.org/D6454 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223189 91177308-0d34-0410-b5e6-96231b3b80d8
211 lines
5.0 KiB
C++
211 lines
5.0 KiB
C++
//===- LLToken.h - Token Codes for LLVM Assembly Files ----------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the enums for the .ll lexer.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_ASMPARSER_LLTOKEN_H
|
|
#define LLVM_LIB_ASMPARSER_LLTOKEN_H
|
|
|
|
namespace llvm {
|
|
namespace lltok {
|
|
enum Kind {
|
|
// Markers
|
|
Eof, Error,
|
|
|
|
// Tokens with no info.
|
|
dotdotdot, // ...
|
|
equal, comma, // = ,
|
|
star, // *
|
|
lsquare, rsquare, // [ ]
|
|
lbrace, rbrace, // { }
|
|
less, greater, // < >
|
|
lparen, rparen, // ( )
|
|
backslash, // \ (not /)
|
|
exclaim, // !
|
|
hash, // #
|
|
|
|
kw_x,
|
|
kw_true, kw_false,
|
|
kw_declare, kw_define,
|
|
kw_global, kw_constant,
|
|
|
|
kw_private,
|
|
kw_internal,
|
|
kw_linkonce, kw_linkonce_odr,
|
|
kw_weak, // Used as a linkage, and a modifier for "cmpxchg".
|
|
kw_weak_odr, kw_appending,
|
|
kw_dllimport, kw_dllexport, kw_common, kw_available_externally,
|
|
kw_default, kw_hidden, kw_protected,
|
|
kw_unnamed_addr,
|
|
kw_externally_initialized,
|
|
kw_extern_weak,
|
|
kw_external, kw_thread_local,
|
|
kw_localdynamic, kw_initialexec, kw_localexec,
|
|
kw_zeroinitializer,
|
|
kw_undef, kw_null,
|
|
kw_to,
|
|
kw_tail,
|
|
kw_musttail,
|
|
kw_target,
|
|
kw_triple,
|
|
kw_unwind,
|
|
kw_deplibs, // FIXME: Remove in 4.0
|
|
kw_datalayout,
|
|
kw_volatile,
|
|
kw_atomic,
|
|
kw_unordered, kw_monotonic, kw_acquire, kw_release, kw_acq_rel, kw_seq_cst,
|
|
kw_singlethread,
|
|
kw_nnan,
|
|
kw_ninf,
|
|
kw_nsz,
|
|
kw_arcp,
|
|
kw_fast,
|
|
kw_nuw,
|
|
kw_nsw,
|
|
kw_exact,
|
|
kw_inbounds,
|
|
kw_align,
|
|
kw_addrspace,
|
|
kw_section,
|
|
kw_alias,
|
|
kw_module,
|
|
kw_asm,
|
|
kw_sideeffect,
|
|
kw_alignstack,
|
|
kw_inteldialect,
|
|
kw_gc,
|
|
kw_prefix,
|
|
kw_prologue,
|
|
kw_c,
|
|
|
|
kw_cc, kw_ccc, kw_fastcc, kw_coldcc,
|
|
kw_intel_ocl_bicc,
|
|
kw_x86_stdcallcc, kw_x86_fastcallcc, kw_x86_thiscallcc, kw_x86_vectorcallcc,
|
|
kw_arm_apcscc, kw_arm_aapcscc, kw_arm_aapcs_vfpcc,
|
|
kw_msp430_intrcc,
|
|
kw_ptx_kernel, kw_ptx_device,
|
|
kw_spir_kernel, kw_spir_func,
|
|
kw_x86_64_sysvcc, kw_x86_64_win64cc,
|
|
kw_webkit_jscc, kw_anyregcc,
|
|
kw_preserve_mostcc, kw_preserve_allcc,
|
|
kw_ghccc,
|
|
|
|
// Attributes:
|
|
kw_attributes,
|
|
kw_alwaysinline,
|
|
kw_sanitize_address,
|
|
kw_builtin,
|
|
kw_byval,
|
|
kw_inalloca,
|
|
kw_cold,
|
|
kw_dereferenceable,
|
|
kw_inlinehint,
|
|
kw_inreg,
|
|
kw_jumptable,
|
|
kw_minsize,
|
|
kw_naked,
|
|
kw_nest,
|
|
kw_noalias,
|
|
kw_nobuiltin,
|
|
kw_nocapture,
|
|
kw_noduplicate,
|
|
kw_noimplicitfloat,
|
|
kw_noinline,
|
|
kw_nonlazybind,
|
|
kw_nonnull,
|
|
kw_noredzone,
|
|
kw_noreturn,
|
|
kw_nounwind,
|
|
kw_optnone,
|
|
kw_optsize,
|
|
kw_readnone,
|
|
kw_readonly,
|
|
kw_returned,
|
|
kw_returns_twice,
|
|
kw_signext,
|
|
kw_ssp,
|
|
kw_sspreq,
|
|
kw_sspstrong,
|
|
kw_sret,
|
|
kw_sanitize_thread,
|
|
kw_sanitize_memory,
|
|
kw_uwtable,
|
|
kw_zeroext,
|
|
|
|
kw_type,
|
|
kw_opaque,
|
|
|
|
kw_comdat,
|
|
|
|
// Comdat types
|
|
kw_any,
|
|
kw_exactmatch,
|
|
kw_largest,
|
|
kw_noduplicates,
|
|
kw_samesize,
|
|
|
|
kw_eq, kw_ne, kw_slt, kw_sgt, kw_sle, kw_sge, kw_ult, kw_ugt, kw_ule,
|
|
kw_uge, kw_oeq, kw_one, kw_olt, kw_ogt, kw_ole, kw_oge, kw_ord, kw_uno,
|
|
kw_ueq, kw_une,
|
|
|
|
// atomicrmw operations that aren't also instruction keywords.
|
|
kw_xchg, kw_nand, kw_max, kw_min, kw_umax, kw_umin,
|
|
|
|
// Instruction Opcodes (Opcode in UIntVal).
|
|
kw_add, kw_fadd, kw_sub, kw_fsub, kw_mul, kw_fmul,
|
|
kw_udiv, kw_sdiv, kw_fdiv,
|
|
kw_urem, kw_srem, kw_frem, kw_shl, kw_lshr, kw_ashr,
|
|
kw_and, kw_or, kw_xor, kw_icmp, kw_fcmp,
|
|
|
|
kw_phi, kw_call,
|
|
kw_trunc, kw_zext, kw_sext, kw_fptrunc, kw_fpext, kw_uitofp, kw_sitofp,
|
|
kw_fptoui, kw_fptosi, kw_inttoptr, kw_ptrtoint, kw_bitcast,
|
|
kw_addrspacecast,
|
|
kw_select, kw_va_arg,
|
|
|
|
kw_landingpad, kw_personality, kw_cleanup, kw_catch, kw_filter,
|
|
|
|
kw_ret, kw_br, kw_switch, kw_indirectbr, kw_invoke, kw_resume,
|
|
kw_unreachable,
|
|
|
|
kw_alloca, kw_load, kw_store, kw_fence, kw_cmpxchg, kw_atomicrmw,
|
|
kw_getelementptr,
|
|
|
|
kw_extractelement, kw_insertelement, kw_shufflevector,
|
|
kw_extractvalue, kw_insertvalue, kw_blockaddress,
|
|
|
|
// Use-list order directives.
|
|
kw_uselistorder, kw_uselistorder_bb,
|
|
|
|
// Unsigned Valued tokens (UIntVal).
|
|
GlobalID, // @42
|
|
LocalVarID, // %42
|
|
AttrGrpID, // #42
|
|
|
|
// String valued tokens (StrVal).
|
|
LabelStr, // foo:
|
|
GlobalVar, // @foo @"foo"
|
|
ComdatVar, // $foo
|
|
LocalVar, // %foo %"foo"
|
|
MetadataVar, // !foo
|
|
StringConstant, // "foo"
|
|
|
|
// Type valued tokens (TyVal).
|
|
Type,
|
|
|
|
APFloat, // APFloatVal
|
|
APSInt // APSInt
|
|
};
|
|
} // end namespace lltok
|
|
} // end namespace llvm
|
|
|
|
#endif
|