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Major changes to a number of subsystems to improve matching

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Work through a number of changes toward making matching a lot saner,
both to reduce the number of patterns to generate for APX but also to
make a number of code patterns simpler.

This replaces a fair number of byte codes.

Improve a number of error messages, especially related to overflows.

Move process_insn() from nasm.c to assemble.c, as it really is the
primary entry point to the assembler module.

Reorder some prefixes. In particular, F2/F3 override 66 when used as a
mandatory prefix, so it makes more sense for them to be closer to the
opcode.

Move a lot more information into struct insn. It is better to have it
in one place; memory consumption is not an issue because struct insn
is transient information.

Get rid of "optimization levels" and replace it with a mask of
flags. That was already halfway done; complete the job.

Replace seg:offset in struct out_data with a struct location. It would
be better to extend this to more places, too.

The ARx and SMx flags are now explicit bitmasks, instead of having a
couple of hard-coded ranges.

Add __func__ to assert or panic messages.

Because of prefix and message changes, a number of travis tests had to
be audited and updated.

Fix a number of instruction patterns which had .128 when they ought to
be .lig. This is no longer a minor issue with the disassembler: for
AVX10, the pattern vector length determines how SAE/RC are encoded,
and there is no valid 128-bit encoding. However, with .lig the 512-bit
encoding can be used.

Separate "o64nw" into two pieces: opsize 64 and "nw" = "REX.w not necessary". The
latter can be included in non-64-bit patterns. "o64" still set REX.W
since that is still the common thing.

New "osz" bytecode: emit an OSP *or* REX.W depending on the current
mode and operand size. Useful for special cases like "nop" where "o64
nop" probably wants to be encoded as "48 90".

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
H. Peter Anvin 2024-08-07 17:13:44 -07:00
parent 7eb0045c5d
commit bff94fbd39
53 changed files with 9161 additions and 10056 deletions
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6
include/error.h
View file

@ -1,6 +1,6 @@
/* ----------------------------------------------------------------------- *
*
* Copyright 1996-2023 The NASM Authors - All Rights Reserved
* Copyright 1996-2024 The NASM Authors - All Rights Reserved
* See the file AUTHORS included with the NASM distribution for
* the specific copyright holders.
*
@ -69,8 +69,8 @@ fatal_func printf_func(1, 2) nasm_critical(const char *fmt, ...);
fatal_func printf_func(2, 3) nasm_criticalf(errflags flags, const char *fmt, ...);
fatal_func printf_func(1, 2) nasm_panic(const char *fmt, ...);
fatal_func printf_func(2, 3) nasm_panicf(errflags flags, const char *fmt, ...);
fatal_func nasm_panic_from_macro(const char *file, int line);
#define panic() nasm_panic_from_macro(__FILE__, __LINE__);
fatal_func nasm_panic_from_macro(const char *func, const char *file, int line);
#define panic() nasm_panic_from_macro(NASM_FUNC,__FILE__,__LINE__)
void vprintf_func(2) nasm_verror(errflags severity, const char *fmt, va_list ap);
fatal_func vprintf_func(2) nasm_verror_critical(errflags severity, const char *fmt, va_list ap);