Dr. Volker Barthelmann´s Compiler Page (original) (raw)

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Deutsche version

Software:
vbcc
vasm
vlink

vbcc - portable ISO C compiler

vbcc is a highly optimizing portable and retargetable ISO C compiler. It supports ISO C according to ISO/IEC 9899:1989 and most of ISO/IEC 9899:1999 (C99).

It is split into a target-independent and a target-dependent part, and provides complete abstraction of host- and target-arithmetic. Therefore, it fully supports cross-compiling for 8, 16, 32 and 64bit architectures as well as non-8bit-byte-based architectures.

Embedded systems are supported by features like different pointer-sizes (e.g. differently sized function- and object-pointers or near- and far-pointers), ROM-able code, inline-assembly, bit-types, interrupt-handlers, section-attributes, stack-calculation and many others (depending on the backend).

vbcc provides a large set of aggressive high-level optimizations as well as target-specific optimizations to produce faster or smaller code. Rather than restricting analysis and optimization to single functions or files, vbcc is able to optimize across functions and even modules. Target-independent optimizations include:

• cross-module function-inlining
• partial inlining of recursive functions
• inter-procedural data-flow analysis
• inter-procedural register-allocation
• register-allocation for global variables
• global common-subexpression-elimination
• global constant-propagation
• global copy-propagation
• dead-code-elimination
• alias-analysis
• loop-unrolling
• induction-variable elimination
• loop-invariant code-motion
• loop-reversal
• replacing induction variables by smaller types Multi-target binary archives can be download for Windows/x64, Linux/x64 and Linux/Arm hosts (including RasperryPi) at the bottom of the page (specialized archives for e.g. 6502 can be found on this page as well). The multi-target distributions support the following architectures:
• M68k: vasm + vbcc
  libc: AmigaOS, Atari TOS, MINT, Atari Jaguar, Linux
• Coldfire: vasm + vbcc
  libc: MINT, Arnewsh 5206
• PowerPC: vasm + vbcc
  libc: AmigaOS, PowerUp, WarpOS, MorphOS, Linux, NetBSD, OpenFirmware
• 6502/65C02: vasm + vbcc
  libc: C64, C128, C16, VIC-20, PET, Atari 8bit, BBC Micro/Master, NES, SNES, MEGA65, Apple I, Apple II, Oric Atmos, Commander X16, Simulator/Freestanding
• 65816: vasm + vbcc
  libc: Apple IIgs, SNES, Simulator/Freestanding
• 6809/6309/68hc12: vasm + vbcc
  libc: simulator/freestanding, OS-9/NitrOS-9 (tbc), Vectrex (tbc)
• i386: vasm + vbcc
  libc: Linux, NetBSD, DOS (tbc)
• VideoCore IV (RasperryPi GPU): vasm + vbcc
  libc: Linux (probably outdated), freestanding
• C16X/ST10: vasm + vbcc
  libc: MM167, freestanding
• QNICE FPGA: vasm + vbcc
  libc: monitor, freestanding
• DEC Alpha: vbcc
  libc: compatible with Linux (probably outdated)
• 832 FPGA: vbcc
  libc: n/a
• 6800/6801/6803/6808/68hc11: vasm
• Z80: vasm
• ARM: vasm
• Jaguar RISC: vasm
• PDP11: vasm
• TR3200: vasm
• Z-machine (Infocom VM): vbcc
  libc: n/a

Anybody interested in additional backends or writing an own backend, can contact me by mail.

All common operating systems can be supported as host systems, including Windows and Unix/Linux systems.

AmigaOS related Download/link area

Current vbcc distribution for AmigaOS, compiled by Frank Wille, author of several assemblers and linkers usable with vbcc.

6502 related Download/link area

vbcc for 6502:

• comes with ready-to-use C library for the following targets: C64, C128, C16, VIC-20, PET, Atari 8bit, BBC Micro/Master, NES, SNES, MEGA65, Apple I, Apple II, Oric Atmos, Commander X16, Simulator/Freestanding
• supports C99 (variable-length arrays, designated initializers etc.)
• generates optimized code (see dhrystones in sample directory)
• supports far-pointers and banked memory with automated bank-switching
• (limited) floating point support based on Steve Wozniaks code
• (pretty good) 32/64bit IEEE floating point support based on SANE
• support for 65C02 extensions
• support for CSG65CE02 extensions
• support for MEGA65 extensions
• support for writing interrupt handlers
• attributes for putting variables into zero page
• supports stack-frames > 256 bytes
• supports file I/O on selected targets

Release 4 (patch 2) of vbcc for 6502 (binaries for Windows and Linux)

Release 4 (patch 1) of vbcc for 6502 (binaries for Windows and Linux)

Release 4 of vbcc for 6502 (binaries for Windows and Linux)

Release 3 (patch 3) of vbcc for 6502 (binaries for Windows and Linux)

Release 3 (patch 2) of vbcc for 6502 (binaries for Windows and Linux)

Release 3 (patch 1) of vbcc for 6502 (binaries for Windows and Linux)

Release 3 of vbcc for 6502 (binaries for Windows and Linux)

Release 2 of vbcc for 6502 (binaries for Windows and Linux)

Release 1 of vbcc for 6502 (binaries for Windows and Linux)

Please have a look at the README included.

65816 related Download/link area

vbcc for 65816:

• comes with ready-to-use C library for the following targets: Apple IIgs, SNES, Simulator/Freestanding
• supports C99 (variable-length arrays, designated initializers etc.)
• generates optimized code (see dhrystones in sample directory)
• supports near-, far- and huge-pointers and memory models
• (limited) floating point support based on Steve Wozniaks code
• support for writing interrupt handlers
• attributes for putting variables into zero page
• supports file I/O on selected targets

Release 1 of vbcc for 65816 (binaries for Windows and Linux)

Please have a look at the README included.

Embedded systems related Download/link area

The second alpha release of a toolchain for 6809/6309/68hc12 (binaries for Windows and Linux)

Please have a look at the README included.

Older versions:

Preview of a toolchain for 6809/6309/68hc12

Preview of a toolchain targeting the VideoCore IV GPU used in the Raspberry PI.

vbcc for VideoCore
(more to come)

Current Snapshot

vbcc docs (pdf)

Download compiler sources (22/02/2025).

Download multi-target Windows (x64) binaries of vbcc/vasm/vlink (29/04/2022).

Download statically-linked multi-target Linux (x64) binaries of vbcc/vasm/vlink (29/04/2022).

Download statically-linked multi-target Linux (arm, e.g. RaspberryPi) binaries of vbcc/vasm/vlink (29/04/2022).