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There were two errors in the arithmetic imm8 instruction. They accept
only REGW, and in case the user write a xxxb opcode that variant
needs to be rejected as well (it's not automatically rejected by REGW
in case the destination is memory).
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Two things: negative constants were rejected (e.g. "add $-15,%eax").
Second the insn order was such that the arithmetic IM8S forms
weren't used (always the IM32 ones). Switching them prefers those
but requires a fix for size calculation in case the opcodes were
OPC_ARITH and OPC_WLX (whose size starts with 1, not zero).
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Use OPC_BWLX and OPC_WLX in i386-asm.h and x86_64-asm.h to
reduce number of differences between both.
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Fix it to actually be able to parse 64bit immediates (enlarge
operand value type). Then, generally there's no need for accepting
IM64 anywhere, except in the 0xba+r mov opcodes, so OP_IM is
unnecessary, as is OPT_IMNO64. Improve the generated code a bit
by preferring the 0xc7 opcode for im32->reg64, instead of the
im64->reg64 form (which we therefore hardcode).
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Can be implemented differently.
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This code was inactive since a long time (and was deactivated because
it was wrong to start with) and just clutters the sources. Remove
it.
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This fixes and activates the asm test that's part of tcctest.c
also on x86-64, requiring a small fix for the 'm' constraint.
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Also remove the hacky mod/rm byte emission during
disp/imm writing.
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cmov can accept multi sizes, but is also a OPC_TEST opcode,
deal with this.
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A bag of assembler fixes, to be either compatible with GAS
(e.g. order of 'test' operands), accept more instructions,
count correct foo{bwlq} variants on x86_64, fix modrm/sib bytes
on x86_64 to not use %rip relative addressing mode, to not use
invalid insns in tests/asmtest.S for x86_64.
Result is that now output of GAS and of tcc on tests/asmtest.S
is mostly the same.
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- better `TOK_HASH_FUNC`
- increases `hash_ident` initial size to 16k (from 8k)
- `cstr_cat` uses single `realloc` + `memcpy`
- `cstr_cat` can append terminating zero
- `tok_str_realloc` initial size to 16 (from 8)
- `parse_define` uses static `tokstr_buf`
- `next` uses static `tokstr_buf`
- fixes two latent bugs (wrong deallocations in libtcc.c:482 and
tccpp.c:2987)
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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.
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* Documentation is now in "docs".
* Source code is now in "src".
* Misc. fixes here and there so that everything still works.
I think I got everything in this commit, but I only tested this
on Linux (Make) and Windows (CMake), so I might've messed
something up on other platforms...
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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`
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Display a different warning when an instruction is recognized by tcc but
the operands found do not correspond to the constraints of the
instruction.
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avoid c++/c99 style comments in preprocessor directives
avoid leadings whitespaces in preprocessor directives
mention implemented variable length arrays in documentation
fixed ambiguous option in texi2html call (Austin English)
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This enables native unwind semantics with longjmp on
win64 by putting an entry into the .pdata section for
each compiled fuction.
Also, the function now use a fixed stack and store arguments
into X(%rsp) rather than using push.
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If you want that, run: make NOTALLINONE=1
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Also, disable 16bit support for now as it causes bugs
in 32bit mode. #define I386_ASM_16 if you want it.
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With imul the 3rd operand defaults to the 2nd on. The previous
logic left 'op_type[2]' uninitialized which caused the bug to
show up only sometimes.
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The new 16bit code was causing wrong 0x66 prefixes
in 32bit code.
The fix possibly breaks the feature on 16bit asm.
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Signed-off-by: aldot <rep.dot.nop@gmail.com>
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