replace lossy 2-bit truncation with rotation-based encoding for
32-bit + MRB_USE_FLOAT32, matching the technique used for 64-bit
float64. rotl32(bits - ADDEND, 3) maps biased exponents [95, 158]
(actual [-32, +31]) to properly tagged inline values with zero
precision loss. special values (0, Inf, NaN) use sentinel constants;
out-of-range floats fall back to heap-allocated RFloat.
also fix a pre-existing alignment issue: RVALUE was 20 bytes on
32-bit, causing 4-byte-aligned objects to be misidentified as
immediates by word boxing (WORDBOX_IMMEDIATE_MASK=0x07 requires
8-byte alignment). pad RVALUE to 24 bytes on 32-bit + float32.
Co-authored-by: Claude <noreply@anthropic.com>
Remove disable_presym from mrbc_build and cross-build fallback.
Add explicit object file dependencies on presym headers in
presym.rake to prevent compilation before headers are generated.
Co-authored-by: Claude <noreply@anthropic.com>
Add build configuration for Cosmopolitan Libc, enabling mruby to be
compiled as an "Actually Portable Executable" (APE) that runs natively
on multiple platforms from a single binary.
Supported platforms:
- Linux (x86_64, ARM64)
- macOS (x86_64, ARM64)
- Windows (x86_64)
- FreeBSD (x86_64)
- OpenBSD (x86_64)
- NetBSD (x86_64)
Included binaries:
- mruby.com - mruby interpreter
- mrbc.com - bytecode compiler
- mirb.com - interactive Ruby shell
- mrdb.com - debugger
- mruby-strip.com - debug info stripper
Usage:
COSMO_ROOT=~/cosmo rake MRUBY_CONFIG=cosmopolitan
The cosmocc toolchain can be downloaded from https://cosmo.zip/pub/cosmocc/
Change to `MRB_USE_IO_PREAD_PWRITE` for consistency with mruby configuration macros.
Similarly, `MRB_WITHOUT_IO_PREAD_PWRITE` is changed to `MRB_NO_IO_PREAD_PWRITE`.
The previous names are available for compatibility but are deprecated.
Currently mruby-eval depends on mruby-binding (formerly mruby-binding-core).
Also, `Kernel#eval` can accept `binding` objects.
With this in mind, it would be better if `Binding#eval` could also be handled by `mrbgems/mruby-eval`.
This adds a build_config that will cross-build a Windows executable
using the MinGW cross-compiler and will also run the unit (i.e.
'rake test') using Wine.
For this to work, I made some modifications to the underlying test
scripts as well as some minor changes to a couple of the tests
themselves.
By uncommenting the line changed by this commit, `ruby -c build_config/default.rb` complains of a syntax error due to the illegally nested double quotes
Yukihiro "Matz" Matsumoto