mirror of
https://github.com/netwide-assembler/nasm.git
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bff94fbd39
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>
41 lines
686 B
NASM
41 lines
686 B
NASM
bits 64
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foo:
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default abs
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mov al, [qword 0xffffffffffffff]
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mov al, [qword 0xffffffffffffffff]
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mov al, [qword 0x1ffffffffffffffff]
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mov cl, [byte 0x12345678]
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default rel
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mov cl, [foo]
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mov cl, [foo + 0x10000000]
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mov cl, [foo + 0x100000000]
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mov cl, [0x100]
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mov cl, [$$ + 0x100]
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mov cl, [rax - 1]
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mov cl, [rax + 0xffffffff]
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mov cl, [rax + 0x1ffffffff]
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bits 32
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mov cl, [eax - 1]
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mov cl, [eax + 0xffffffff]
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mov cl, [eax + 0x1ffffffff]
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mov cl, [byte eax + 0xffffffff]
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mov cl, [byte eax + 0x1ffffffff]
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mov cl, [byte eax + 0x1000ffff]
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bits 16
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mov cl, [di - 1]
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mov cl, [di + 0xffff]
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mov cl, [di + 0x1ffff]
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mov cl, [byte di + 0xffff]
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mov cl, [byte di + 0x1ffff]
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mov cl, [byte di + 0x10ff]
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