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Meng Zhuo 419b527657 riscv64-asm: implement far branches via expansion
For branch targets that are external/static symbols (where the
offset cannot be determined at assembly time), expand to:
  b<inverse> .+8       # skip if condition false
  auipc t0, %pcrel_hi  # load target upper bits
  jalr x0, %pcrel_lo(t0)  # jump

This handles the ±4 KiB B-type limitation without requiring
linker relaxation (R_RISCV_RELAX).  Local immediates within
range still use the compact B-type encoding.
2026-05-06 12:30:34 +08:00
.github/workflows arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
examples Small updates 2025-12-17 20:22:08 +01:00
include arm64-win32 support : runtime 2026-05-04 12:49:53 +02:00
lib arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
tests riscv64-asm: remove long long 'not implemented' errors in inline asm 2026-05-06 12:30:34 +08:00
win32 arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
.gitignore reverts (11/2025 - 04/2026) 2026-05-03 11:09:45 +02:00
arm64-asm.c arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
arm64-gen.c arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
arm64-link.c arm64-win32 support: symbolic op-code constants 2026-05-04 12:50:42 +02:00
arm64-tok.h arm64-win32 support : arm64 assembler 2026-05-04 12:49:53 +02:00
arm-asm.c some reverts & fixes 2026-01-10 13:46:23 +01:00
arm-gen.c some reverts & fixes 2026-01-10 13:46:23 +01:00
arm-link.c tccgen.c: fix two scope problems 2025-08-22 19:14:44 +02:00
arm-tok.h arm-asm: Accept additional register names 2025-05-07 22:29:46 +02:00
c67-gen.c some reverts & fixes 2026-01-10 13:46:23 +01:00
c67-link.c div fixes 2024-06-11 14:26:34 +02:00
Changelog configury update & bump VERSION to 0.9.28rc 2023-09-06 22:42:52 +02:00
CodingStyle CodingStyle: Remove reference to misaligned struct CString. 2016-01-06 19:09:28 +00:00
coff.h Spelling fixes in C comments only 2017-05-07 21:38:09 -07:00
configure arm64-win32 support : configure & Makefiles 2026-05-04 12:49:25 +02:00
conftest.c configury update & bump VERSION to 0.9.28rc 2023-09-06 22:42:52 +02:00
COPYING changed license to LGPL 2003-05-24 14:18:56 +00:00
dwarf.h Add dwarf support 2022-05-05 09:10:37 +02:00
elf.h Problems solved on for libtcc, pie, riscv64, arm64 2025-12-21 07:05:55 +01:00
i386-asm.c arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
i386-asm.h Add endbr32 for i386 2025-07-14 08:27:14 +02:00
i386-gen.c i386: bound checking needs pic in shared library 2026-02-05 09:31:59 +01:00
i386-link.c Add pic/pie support to i386 2025-12-30 20:15:35 +01:00
i386-tok.h x86asm: Add lzcnt/tzcnt support 2022-12-13 11:34:54 +01:00
il-gen.c revert "Save registers around attribute cleanup" (almost) 2025-05-25 00:20:23 +02:00
il-opcodes.h Revert all of my changes to directories & codingstyle. 2015-07-29 16:57:12 -04:00
libtcc.c arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
libtcc.h reverts (11/2025 - 04/2026) 2026-05-03 11:09:45 +02:00
Makefile arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
README Reverts & cleanups 2025-10-09 13:08:33 +02:00
RELICENSING Relicensing TinyCC 2026-04-16 10:45:24 -03:00
riscv64-asm.c riscv64-asm: implement far branches via expansion 2026-05-06 12:30:34 +08:00
riscv64-gen.c riscv64: implement gen_cvt_sxtw with addiw instruction 2026-05-06 12:30:34 +08:00
riscv64-link.c reverts (11/2025 - 04/2026) 2026-05-03 11:09:45 +02:00
riscv64-tok.h Implement some RV64F/D instructions 2025-11-28 15:23:07 +02:00
stab.def Revert all of my changes to directories & codingstyle. 2015-07-29 16:57:12 -04:00
stab.h Revert all of my changes to directories & codingstyle. 2015-07-29 16:57:12 -04:00
tcc-doc.texi linker options & tcc_load_ldscript() reworked 2025-03-28 21:23:19 +01:00
tcc.c arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
tcc.h riscv64: implement gen_cvt_csti for narrow int promotion 2026-05-06 12:30:34 +08:00
tccasm.c arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
tcccoff.c tcc_error_noabort(): always use this unless compiling 2023-04-25 15:22:03 +02:00
tccdbg.c Relocation updates 2025-12-23 06:46:22 +01:00
tccelf.c reverts (11/2025 - 04/2026) 2026-05-03 11:09:45 +02:00
tccgen.c riscv64: implement gen_cvt_csti for narrow int promotion 2026-05-06 12:30:34 +08:00
tcclib.h arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
tccmacho.c linker options & tcc_load_ldscript() reworked 2025-03-28 21:23:19 +01:00
tccpe.c arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
tccpp.c arm64-win32 support : arm64 assembler 2026-05-04 12:49:53 +02:00
tccrun.c arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
tcctok.h arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
tcctools.c tcc.c:main() free all & etc... 2025-08-18 20:43:52 +02:00
texi2pod.pl Revert all of my changes to directories & codingstyle. 2015-07-29 16:57:12 -04:00
TODO testing 2025-07-21 00:48:51 -03:00
USES configury update & bump VERSION to 0.9.28rc 2023-09-06 22:42:52 +02:00
VERSION configury update & bump VERSION to 0.9.28rc 2023-09-06 22:42:52 +02:00
x86_64-asm.h x86-64: Fix cvts*2si 2025-12-03 17:21:00 +02:00
x86_64-gen.c arm64-win32 review: fix problems and pass tests 2026-05-04 12:51:10 +02:00
x86_64-link.c some reverts & fixes 2026-01-10 13:46:23 +01:00

Tiny C Compiler - C Scripting Everywhere - The Smallest ANSI C compiler
-----------------------------------------------------------------------

Features:
--------

- SMALL! You can compile and execute C code everywhere, for example on
  rescue disks.

- FAST! tcc generates machine code for i386, x86_64, arm, aarch64 or
  riscv64.  Compiles and links about 10 times faster than 'gcc -O0'.

- UNLIMITED! Any C dynamic library can be used directly. TCC is
  heading toward full ISOC99 compliance. TCC can of course compile
  itself.

- SAFE! tcc includes an optional memory and bound checker. Bound
  checked code can be mixed freely with standard code.

- Compile and execute C source directly. No linking or assembly
  necessary. Full C preprocessor included.

- C script supported : just add '#!/usr/local/bin/tcc -run' at the first
  line of your C source, and execute it directly from the command
  line.

Documentation:
-------------

1) Installation on Linux, BSD variants or macOS hosts:

   ./configure
   make
   make test
   make install

   Notes: On BSD hosts, gmake should be used instead of make.
   For Windows read tcc-win32.txt.

makeinfo must be installed to compile the doc.  By default, tcc is
installed in /usr/local/bin.  ./configure --help  shows configuration
options.


2) Introduction

We assume here that you know ANSI C. Look at the example ex1.c to know
what the programs look like.

The include file <tcclib.h> can be used if you want a small basic libc
include support (especially useful for floppy disks). Of course, you
can also use standard headers, although they are slower to compile.

You can begin your C script with '#!/usr/local/bin/tcc -run' on the first
line and set its execute bits (chmod a+x your_script). Then, you can
launch the C code as a shell or perl script :-) The command line
arguments are put in 'argc' and 'argv' of the main functions, as in
ANSI C.

3) Examples

ex1.c: simplest example (hello world). Can also be launched directly
as a script: './ex1.c'.

ex2.c: more complicated example: find a number with the four
operations given a list of numbers (benchmark).

ex3.c: compute fibonacci numbers (benchmark).

ex4.c: more complicated: X11 program. Very complicated test in fact
because standard headers are being used ! As for ex1.c, can also be launched
directly as a script: './ex4.c'.

ex5.c: 'hello world' with standard glibc headers.

tcc.c: TCC can of course compile itself. Used to check the code
generator.

tcctest.c: auto test for TCC which tests many subtle possible bugs. Used
when doing 'make test'.

4) Full Documentation

Please read tcc-doc.html to have all the features of TCC.  Additional
information for the Windows port is in tcc-win32.txt.

License:
-------

TCC is distributed under the GNU Lesser General Public License (see
COPYING file).

Fabrice Bellard.