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Author SHA1 Message Date
Edmund Grimley Evans 7dddd65b46 In gen_vla_sp_restore, use X30 rather than get_reg. 2016-10-10 20:15:57 +01:00
Edmund Grimley Evans 94d8d12c26 Fix handling of case_reg in switch statement. 
The back end functions gen_op(comparison) and gtst() might allocate
registers so case_reg should be left on the value stack while they
are called and set again afterwards.

This bug fix was first applied as ff3f9aa (20 Feb 2015), but the fix
was reverted by fc0fc6a (21 Sep 2016, "switch: collect case ranges
first, then generate code"). Here the fix is updated for the new code.
 2016-10-10 20:15:20 +01:00
Edmund Grimley Evans f5f82abc99 Insert spaces between certain tokens when tcc is invoked with -E. 
Insert a space when it is required to prevent mistokenisation of
the output, and also in a few cases where it is not strictly
required, imitating GCC's behaviour.
 2016-05-09 19:27:31 +01:00
Edmund Grimley Evans 0fbc77cac6 tests/tests2/Makefile: Make 85-asm-outside-function Intel-only. 2016-05-04 21:23:25 +01:00
Edmund Grimley Evans a348513569 Revert 78e4ee5. 2016-05-04 20:27:39 +01:00
Edmund Grimley Evans 6015840583 Revert 3283c26 and a1c1390 in tccpp.c. 2016-05-04 20:14:39 +01:00
Edmund Grimley Evans 68ce8639bb TODO: Add two issues. 2016-04-24 22:44:57 +01:00
Edmund Grimley Evans f75f89fc8f tccgen.c: In parse_btype, handle type qualifiers applied to arrays. 
Also add some test cases in tests/tests2/39_typedef.c.
 2016-01-11 07:51:58 +00:00
Edmund Grimley Evans 541b33591c CodingStyle: Remove reference to misaligned struct CString. 
This was fixed by 1c2dfa1 on 2015-11-21.
 2016-01-06 19:09:28 +00:00
Edmund Grimley Evans 1c2dfa1f4b Change the way struct CStrings are handled. 
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.
 2015-11-26 12:40:50 +00:00
Edmund Grimley Evans 4886d2c640 TODO: Add two issues. 2015-11-26 12:31:23 +00:00
Edmund Grimley Evans 99372bb1d3 tccgen.c: Give error if statement expression found when const wanted. 
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); }
 2015-11-26 12:28:42 +00:00
Edmund Grimley Evans 51c3465a49 tcc.h: Change order of built-in include paths: put TCC's own dir first. 
There may be compiler-specific header files that should override
system headers. See TCC's include paths by running "tcc -vv".
 2015-11-23 12:50:16 +00:00
Edmund Grimley Evans 7301b42e36 tccgen.c: Try to make sizeof(!x) work. 
tests/tests2/27_sizeof.*: Add test.
 2015-11-22 00:00:36 +00:00
Edmund Grimley Evans 737f984213 tccgen.c: Bug fix for 992cbda and 3ff77a1: set nocode_wanted. 
tests/tests2/78_vla_label.*: Add test.
 2015-11-21 23:58:58 +00:00
Edmund Grimley Evans cfef9ac3f5 TODO: Add note on handling of floating-point values. 2015-11-21 10:35:47 +00:00
Edmund Grimley Evans dd40d6a068 TODO: Add some issues. 2015-11-21 00:04:58 +00:00
Edmund Grimley Evans 5bd5fd488d CodingStyle: Add notes on language and testing. 2015-11-20 23:41:01 +00:00
Edmund Grimley Evans 3ff77a1d6f Improve constant propagation with "&&" and "||". 2015-11-20 23:33:49 +00:00
Edmund Grimley Evans c7067aeb84 tccelf.c: On arm64, use read64le, and use uint64_t to check range. 2015-11-20 23:29:08 +00:00
Edmund Grimley Evans 4ae626451e Bug fix for commit 553242c18a. 
In gtst, vtop->c.i is not usually zero, but it is when compiling:

int f(void) { return 1 && 1 ? 1 : 1; }
 2015-11-20 23:17:24 +00:00
Edmund Grimley Evans 992cbda8d0 tccgen.c: Recognise constant expressions with conditional operator. 
tests/tests2/78_vla_label.c: Check that int a[1 ? 1 : 1] is not a VLA.
 2015-11-20 00:24:46 +00:00
Edmund Grimley Evans 30c54c9d43 tccgen.c: In parse_btype, handle typedef types with added type qualifiers. 
In a case like

    typedef int T[1];
    const T x;

we must make a copy of the typedef type so that we can add the type
qualifiers to it.

The following code used to give

error: incompatible types for redefinition of 'f'

    typedef int T[1];
    void f(const int [1]);
    void f(const T);
 2015-11-19 23:45:33 +00:00
Edmund Grimley Evans 58a34d22c9 tccgen.c: Improvements to type_to_str (only used for error messages). 
1. Handle array types.
2. Print the type qualifiers of pointers.
 2015-11-19 23:35:36 +00:00
Edmund Grimley Evans ba99a70cd8 Trivial changes to avoid some compiler warnings. 2015-11-19 18:26:47 +00:00
Edmund Grimley Evans 553242c18a Replace pointer casts with calls to (read|write)(16|32|64)le. 
This stops UBSan from giving runtime misaligned address errors
and might eventually allow building on a non-little-endian host.
 2015-11-19 18:21:14 +00:00
Edmund Grimley Evans 5d496b1695 tccgen.c: Avoid undefined behaviour in constant propagation. 2015-11-17 19:34:31 +00:00
Edmund Grimley Evans 569fba6db9 Merge the integer members of union CValue into "uint64_t i". 2015-11-17 19:09:35 +00:00
Edmund Grimley Evans 3712c958f4 tests/tests2/79_vla_continue.c: Fix off-by-one error. 2015-11-13 21:49:29 +00:00
Edmund Grimley Evans c39bc9caa7 libtcc.c: Completely replace tcc_normalize_inc_dirs. 2015-11-11 21:18:01 +00:00
Edmund Grimley Evans a7334f791d arm64-gen.c: Avoid some cases of undefined behaviour. 
Also make some functions more portable.
 2015-11-09 23:06:05 +00:00
Edmund Grimley Evans c52128c581 tccelf.c: Avoid two trivial instances of undefined behaviour. 2015-11-09 22:57:58 +00:00
Edmund Grimley Evans eb00777309 tcctok.h: Put TOK_memmove in the correct places (I hope). 
This should have been part of b051549. Someone should test on ARM.
 2015-11-05 19:37:04 +00:00
Edmund Grimley Evans 7f0b798418 tcctok.h: Revert 41408f2, which moved TOK_memmove. 2015-11-05 19:33:46 +00:00
Edmund Grimley Evans f7dd3d49cc lib/libtcc1.c: Replace "long" with "unsigned int" in union float_long. 2015-11-04 23:22:00 +00:00
Edmund Grimley Evans 24308fd292 tccpp.c: In TOK_GET, add comment warning about illegal cast. 
Also, in tok_str_add2, use memcpy instead of the illegal cast.

Unfortunately, I can't see an easy way of fixing the bug.
 2015-11-04 20:27:54 +00:00
Edmund Grimley Evans 20f0c179da tccpp.c: Define and use tok_last for checking if last token is space. 2015-11-04 20:25:26 +00:00
Edmund Grimley Evans b051549f2e tccgen.c: Use memmove for struct assignment: dest and src may be equal. 2015-11-04 20:23:17 +00:00
Edmund Grimley Evans 8eab556ac5 tccgen.c: Fix memory leak involving asm_label. 2015-11-04 20:22:30 +00:00
Edmund Grimley Evans 9bf0e57509 tests/tcctest.c: Fix up format strings. 2015-11-04 20:20:26 +00:00
Edmund Grimley Evans f4082851ea Enable variable-length arrays on arm64. 
arm64-gen.c: Implement gen_vla_sp_save, gen_vla_sp_restore, gen_vla_alloc.
tests/Makefile: Run vla_test on arm64.
 2015-10-31 11:04:52 +00:00
Edmund Grimley Evans f0b7566181 tccelf.c: Reset sym after call to build_got. 
The call to build_got can cause symtab_section->data to be reallocated
(build_got -> add_elf_sym -> put_elf_sym -> section_ptr_add ->
section_realloc -> tcc_realloc). This is not obvious on a cursory
inspection, but fortunately Valgrind spotted it immediately.
Are there other, similar bugs that Valgrind did not detect?
 2015-10-16 20:33:41 +01:00
Edmund Grimley Evans 743684fe39 tccpp.c: Avoid infinite loop on: printf '/**' | ./tcc - 2015-10-15 19:02:58 +01:00
Edmund Grimley Evans c899659d39 tccgen.c: Remove undefined shift of negative signed value. 2015-10-15 19:02:57 +01:00
Edmund Grimley Evans eafd7a7d3b Correct prototype: void __clear_cache(void *, void *). 2015-10-15 19:02:54 +01:00
Edmund Grimley Evans aa812e8745 Convert some lines from ISO-8859-1 to UTF-8. 
perl -i -pe 'use Text::Iconv;
$c1 = Text::Iconv->new("utf-8", "utf-8");
$c2 = Text::Iconv->new("iso-8859-1", "utf-8");
if (!$c1->convert($_)) { $_ = $c2->convert($_); }' \
`find * -type f`
 2015-03-11 07:30:03 +00:00
Edmund Grimley Evans 5de8b5638f .gitignore: Add lib/arm64. 2015-03-10 22:38:26 +00:00
Edmund Grimley Evans 0e79df499a tccgen.c: (!nocode_wanted) -> (nocode_wanted) in arm64 part. 2015-03-10 22:37:36 +00:00
Edmund Grimley Evans d73b488401 arm64: Implement __clear_cache. 
__clear_cache is defined in lib-arm64.c with a single call to
__arm64_clear_cache, which is the real built-in function and is
turned into inline assembler by gen_clear_cache in arm64-gen.c
 2015-03-08 00:10:44 +00:00
Edmund Grimley Evans 03303628c7 tests/Makefile: Quote to avoid: /bin/sh: 1: [: !=: unexpected operator 2015-03-07 18:10:45 +00:00
Edmund Grimley Evans d854dede03 arm64: Optimise some integer operations with a constant operand. 2015-03-07 17:42:08 +00:00
Edmund Grimley Evans ac70e6b840 tccgen.c: Optimise 0<<x, 0>>x, -1>>x, x&0, x*0, x|-1, x%1. 
More precisely, treat (0 << x) and so on as constant expressions, but
not if const_wanted as we do not want to allow "case (x*0):", ...

Do not optimise (0 / x) and (0 % x) here as x might be zero, though
for an architecture that does not generate an exception for division
by zero the back end might choose to optimise those.
 2015-03-07 17:32:39 +00:00
Edmund Grimley Evans 9163393476 arm64-gen.c: In load(), do not sign-extend 32-bit VT_CONST. 2015-03-07 17:32:39 +00:00
Edmund Grimley Evans 238e760a29 Add __builtin_return_address. 
Implementation is mostly shared with __builtin_frame_address.
It seems to work on arm64, i386 and x86_64. It may need to be
adapted for other targets.
 2015-03-06 21:01:14 +00:00
Edmund Grimley Evans 3fb8b14806 tccelf.c: File path component is "arm64", not "ARM64". 2015-03-04 19:43:29 +00:00
Edmund Grimley Evans 1706d2254b arm64-gen.c: Improve generation of stack offsets. 2015-03-02 20:51:03 +00:00
Edmund Grimley Evans 1d41da9590 arm64-gen.c: Rename some functions and add comments. 2015-03-02 20:45:58 +00:00
Edmund Grimley Evans 86e8dcd5e2 arm64: Improve constant generation, with tests. 2015-03-02 20:39:28 +00:00
Edmund Grimley Evans 883fd365c7 arm64-gen.c: Better explanation of relocation choice. 2015-03-01 11:31:10 +00:00
Edmund Grimley Evans fc119f9840 73_arm64.c: Avoid taking address of return value. 2015-02-26 12:27:00 +00:00
Edmund Grimley Evans 8329facdfa Add 73_arm64 for testing some arm64 things, mostly PCS. 2015-02-25 22:51:41 +00:00
Edmund Grimley Evans a4d43618fb arm64-gen.c: In gen_va_arg, handle the remaining HFA cases. 2015-02-25 22:51:41 +00:00
Edmund Grimley Evans 36bb8994dd Relicensing TinyCC 2015-02-25 07:52:39 +00:00
Edmund Grimley Evans 97e08be344 tests/tcctest.c: Test COMPAT_TYPE(char *, signed char *). 2015-02-24 19:35:31 +00:00
Edmund Grimley Evans 40f7e11c53 tccgen.c: Make sure that gen_op always returns an rvalue. 
Either this fix, or an alternative one, is required for arm64.
 2015-02-23 22:51:10 +00:00
Edmund Grimley Evans b14ef0e24b Add arm64 (AArch64) as a target architecture. 2015-02-23 22:51:03 +00:00
Edmund Grimley Evans 738606dbd5 Use RELA relocations properly for R_DATA_PTR on x86_64. 
libtcc.c: Add greloca, a generalisation of greloc that takes an addend.
tcc.h: Add greloca and put_elf_reloca.
tccelf.c: Add put_elf_reloca, a generalisation of put_elf_reloc.
tccgen.c: On x86_64, use greloca instead of greloc in init_putv.
 2015-02-21 21:29:03 +00:00
Edmund Grimley Evans 86c850fc58 tcc-doc.texi: Explain VT_LLOCAL a bit better. 
And delete the sentence about it being removed.
 2015-02-20 23:29:21 +00:00
Edmund Grimley Evans ff3f9aa6ba Fix handling of case_reg in switch statement. 
The back end functions gen_op(comparison) and gtst() might allocate
registers so case_reg should be left on the value stack while they
are called and set again afterwards.
 2015-02-20 23:16:00 +00:00