From: Vlad Vissoultchev
Date: Mon, 11 Apr 2016 01:32:28 +0300
Subject: Add VS2015 solution and project files to `win32/vs2015`
directory
This allows release/debug builds for both x86 and x64 targets. Some
warnings had to be suppressed.
Output libtcc.dll and tcc.exe are copied to parent `win32` directory
w/ a post-build action.
From: Vlad Vissoultchev
Date: Mon, 11 Apr 2016 01:26:32 +0300
Subject: Fix pragma once guard when compiling multiple source files
When compiling multiple source files directly to executable cached
include files guard was incorrectly checked for TOK_once in ifndef_macro
member.
If two source files included the same header guarded by pragma once, then
the second one erroneously skipped it as `cached_includes` is not cleared
on second `tcc_compile`
When tccboot kernels compiles with
'Identifiers can start and/or', this kernel don't start.
It is hard to find what is wrong.
PS: there was no test for identifiers in *.S with '.'
This only silences "cannot find library" error and allows Makefiles targeting gcc to not complain about missing libraries
If there is custom libm then standard handling applies.
There was already support for -dD option but in contrast -dM dumps only `#define` directives w/o actual preprocessor output.
The original -dD output differs from gcc output by additional comment in front of `#define`s so this quirk is left for -dM as well.
From gcc docs: "You may also specify attributes between the enum, struct or union tag and the name of the type rather than after the closing brace."
Adds `82_attribs_position.c` in `tests/tests2`
made like in pcc
(pcc.ludd.ltu.se/ftp/pub/pcc-docs/pcc-utf8-ver3.pdf)
We treat all chars with high bit set as alphabetic.
This allow code like
#include <stdio.h>
int Lefèvre=2;
int main() {
printf("Lefèvre=%d\n",Lefèvre);
return 0;
}
modified version of the old one which don't allow '.'
in #define Identifiers. This allow correctly preprocess
the following code in *.S
#define SRC(y...) \
9999: y; \
.section __ex_table, "a"; \
.long 9999b, 6001f ; \
// .previous
SRC(1: movw (%esi), %bx)
6001:
A test included.
This reloction must copy initialized data from the library
to the program .bss segment. Currently made like for ARM
(to remove noise of defaukt case). Is this true?
remove non-existent or duplicate directories from include paths
if -fnormalize-inc-dirs is specified. This will help
to compile current coreutils package
- Identifiers can start and/or contain '.' in PARSE_FLAG_ASM_FILE
- Move all GAS directives under TOK_ASMDIR prefix
This patches breaks compilation of the tccboot (linux 2.4.26
kernel). A test.S which fails with this patches:
#define SRC(y...) \
9999: y; \
.section __ex_table, "a"; \
.long 9999b, 6001f<---->; \
.previous
SRC(1:<>movw (%esi), %bx<------>)
// 029-test.S:7: error: macro 'SRC' used with too many args
the check on incomplete struct/union/enum types was too early,
disallowing mixed specifiers and qualifiers. Simply rely on
the size (->c) field for that. See testcases.
R_386_GOT32X can occur in object files assembled by new binutils, and in
particular do appear in glibc startup code (crt*.o). This patch is
modeled after the x86_64 one, handling the new relocation in the same
trivial way.
The introduction of read32le everywhere created a subtle issue, going
from
x = *(int*)p;
to
x = read32le(p);
is not equivalent if x is a larger than 32bit quantity, like an
address on x86_64, because read32le returns an unsigned int. The first
sign extends, the latter zero extends. This broke shared library
creation for gawk. It's enough to amend the case of the above
situation, cases like "write32le(p, read32le(p) +- something)" are okay,
no extensions happen or matter.
R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX can occur in object files
comiled by new binutils. They are not dynamic relocations, so normally
wouldn't be a problem for tcc (one doesn't normally mix object files
created by different compiler/binutils, static archives are so out :)).
If it weren't for the glibc startup code, crt*.o, of course. They now
do contain such relocs --> boom. Handle them in the trivial way.
A CString used to be copied into a token string, which is an int array.
On a 64-bit architecture the pointers were misaligned, so ASan gave
lots of warnings. On a 64-bit architecture that required memory
accesses to be correctly aligned it would not work at all.
The CString is now included in CValue instead.
Some test cases:
#define SE ({ switch (0) { } 0; })
// Should give error:
int x = SE;
void f(void) { static int x = SE; }
void f(void) { enum e { a = SE }; }
void f(void) { switch (0) { case SE: break; } }
// Correct:
int f(void) { return SE; }
int f(void) { return sizeof(SE); }
