mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-28 02:56:36 -04:00
Matthew Stanley
0ea1f26568
Add sljit as a self-contained, toolchain-less codegen backend for the
overlay self-improvement loop. gcc stays the default (dev: optimized +
inspectable); sljit is the fallback / production producer. Interpreter
remains the correctness floor.
This commit lands the backend-agnostic foundation only; the MIPS->sljit
emitter is not built yet, so every fragment safely declines to the
interpreter (no change to the validated gcc path).
- Vendor sljit (BSD-2-Clause) at lib/sljit/, wired into runtime.cmake
(compile sljitLir.c + include dir; sljit auto-detects the host arch).
- overlay_sljit.{h,c}: backend-selection policy (PSX_OVERLAY_BACKEND=
auto|gcc|sljit), availability, a real codegen smoke test, and
try_compile() honoring the precision-over-recall bail-to-interp contract.
- sljit_status debug-server command (Rule-3 clean: status via getter).
- THIRD_PARTY_ATTRIBUTION.md: sljit entry.
Verified: TombaRecomp/build-dev (MinGW gcc 15.2) compiles + links
psx-runtime.exe; standalone smoke harness JITs f(a)=a+1234 and runs it
correctly (26 bytes x86-64). Design + locked tier decisions in SLJIT.md.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
143 lines
5.1 KiB
C
143 lines
5.1 KiB
C
/*
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* Stack-less Just-In-Time compiler
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*
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* Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SLJIT_CONFIG_H_
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#define SLJIT_CONFIG_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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This file contains the basic configuration options for the SLJIT compiler
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and their default values. These options can be overridden in the
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sljitConfigPre.h header file when SLJIT_HAVE_CONFIG_PRE is set to a
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non-zero value.
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*/
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/* --------------------------------------------------------------------- */
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/* Utilities */
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/* --------------------------------------------------------------------- */
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/* Implements a stack like data structure (by using mmap / VirtualAlloc */
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/* or a custom allocator). */
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#ifndef SLJIT_UTIL_STACK
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/* Enabled by default */
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#define SLJIT_UTIL_STACK 1
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#endif
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/* Uses user provided allocator to allocate the stack (see SLJIT_UTIL_STACK) */
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#ifndef SLJIT_UTIL_SIMPLE_STACK_ALLOCATION
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/* Disabled by default */
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#define SLJIT_UTIL_SIMPLE_STACK_ALLOCATION 0
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#endif
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/* Single threaded application. Does not require any locks. */
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#ifndef SLJIT_SINGLE_THREADED
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/* Disabled by default. */
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#define SLJIT_SINGLE_THREADED 0
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#endif
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/* --------------------------------------------------------------------- */
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/* Configuration */
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/* --------------------------------------------------------------------- */
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/* If SLJIT_STD_MACROS_DEFINED is not defined, the application should
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define SLJIT_MALLOC, SLJIT_FREE, SLJIT_MEMCPY, and NULL. */
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#ifndef SLJIT_STD_MACROS_DEFINED
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/* Disabled by default. */
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#define SLJIT_STD_MACROS_DEFINED 0
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#endif
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/* Executable code allocation:
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If SLJIT_EXECUTABLE_ALLOCATOR is not defined, the application should
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define SLJIT_MALLOC_EXEC and SLJIT_FREE_EXEC.
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Optionally, depending on the implementation used for the allocator,
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SLJIT_EXEC_OFFSET and SLJIT_UPDATE_WX_FLAGS might also be needed. */
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#ifndef SLJIT_EXECUTABLE_ALLOCATOR
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/* Enabled by default. */
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#define SLJIT_EXECUTABLE_ALLOCATOR 1
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/* When SLJIT_PROT_EXECUTABLE_ALLOCATOR is enabled SLJIT uses
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an allocator which does not set writable and executable
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permission flags at the same time.
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Instead, it creates a shared memory segment (usually backed by a file)
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and maps it twice, with different permissions, depending on the use
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case.
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The trade-off is increased use of virtual memory, incompatibility with
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fork(), and some possible additional security risks by the use of
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publicly accessible files for the generated code. */
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#ifndef SLJIT_PROT_EXECUTABLE_ALLOCATOR
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/* Disabled by default. */
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#define SLJIT_PROT_EXECUTABLE_ALLOCATOR 0
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#endif
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/* When SLJIT_WX_EXECUTABLE_ALLOCATOR is enabled SLJIT uses an
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allocator which does not set writable and executable permission
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flags at the same time.
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Instead, it creates a new independent map on each invocation and
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switches permissions at the underlying pages as needed.
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The trade-off is increased memory use and degraded performance. */
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#ifndef SLJIT_WX_EXECUTABLE_ALLOCATOR
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/* Disabled by default. */
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#define SLJIT_WX_EXECUTABLE_ALLOCATOR 0
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#endif
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#endif /* !SLJIT_EXECUTABLE_ALLOCATOR */
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/* Return with error when an invalid argument is passed. */
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#ifndef SLJIT_ARGUMENT_CHECKS
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/* Disabled by default */
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#define SLJIT_ARGUMENT_CHECKS 0
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#endif
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/* Debug checks (assertions, etc.). */
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#ifndef SLJIT_DEBUG
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/* Enabled by default */
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#define SLJIT_DEBUG 1
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#endif
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/* Verbose operations. */
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#ifndef SLJIT_VERBOSE
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/* Enabled by default */
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#define SLJIT_VERBOSE 1
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#endif
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/*
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SLJIT_IS_FPU_AVAILABLE
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The availability of the FPU can be controlled by SLJIT_IS_FPU_AVAILABLE.
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zero value - FPU is NOT present.
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nonzero value - FPU is present.
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*/
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/* For further configurations, see the beginning of sljitConfigInternal.h */
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* SLJIT_CONFIG_H_ */
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