c209a4cab6
https://bugs.webkit.org/show_bug.cgi?id=229332 rdar://82163923 Reviewed by Keith Miller. 1. Enhance "include" offlineasm Instruction to always attempt to include an asm file from <build-products>/usr/local/include/WebKitAdditions/ first. If the specified file is not available there, then it will attempt to include the file from the same directory as the current source file (which in practice, means Source/JavaScriptCore/llint/). 2. Enhance "include" offlineasm Instruction to allow an optional file to be included if it exists. For example, the following offlineasm code: include? LowLevelInterpreterAdditions ... will attempt to include a file LowLevelInterpreterAdditions.asm. If the file does not exist, this will be a no-op. Note: the "?" after the "include" means the include is optional. 3. Enhanced "emit" offlineasm Instruction to be able to take more than one operand. "emit" used to just copy the string operand that follows into the generated LLIntAssembly.h. Now, "emit" can take multiple comma separated operands, and will concatenate all the operands. Additionally, "emit" can now take a LocalLabelReference as an operand. For example, this offline asm code: emit "b ", .done ... .done: ... will generate this inline asm code in LLIntAssembly.h: "b " LOCAL_LABEL_STRING(_offlineasm_someLabel_done) "\n" This makes it easier to emit branches to local labels. 4. Also fixed LLInt code alignment for ARM_THUMB2 and ARM64. Previously, it was aligned using ".align 4" which means aligned on a 4 instruction boundary. Note: the interpretation of .align varies for different target CPU architectures. Now, we do the alignment using ".balign 4" which means align on a 4 byte boundary. This is the intended alignment because ARM64 instruction size is 4 bytes, and ARM_THUMB2 instruction size is either 2 bytes or 4 bytes. Using .align before was potentially wasting some code space. * llint/LowLevelInterpreter.asm: * llint/LowLevelInterpreter.cpp: * offlineasm/ast.rb: * offlineasm/parser.rb: Canonical link: https://commits.webkit.org/240738@main git-svn-id: https://svn.webkit.org/repository/webkit/trunk@281321 268f45cc-cd09-0410-ab3c-d52691b4dbfc |
||
|---|---|---|
| .. | ||
| arm.rb | ||
| arm64.rb | ||
| arm64e.rb | ||
| asm.rb | ||
| ast.rb | ||
| backends.rb | ||
| cloop.rb | ||
| config.rb | ||
| generate_offset_extractor.rb | ||
| generate_settings_extractor.rb | ||
| instructions.rb | ||
| mips.rb | ||
| offsets.rb | ||
| opt.rb | ||
| parser.rb | ||
| registers.rb | ||
| risc.rb | ||
| self_hash.rb | ||
| settings.rb | ||
| transform.rb | ||
| x86.rb | ||