nqasm - assembler and disassembler for the nqcpu

	Commit message (Collapse)	Author	Age	Files	Lines
*	nqasm: support binary arithmetic operators in immediate operands	Bobby Bingham	2017-01-18	4	-9/+36
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*	nqasm: support unary operators in immediate expressions	Bobby Bingham	2017-01-18	4	-6/+45
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*	nqasm: allow "." to refer to current pc in immediate operand	Bobby Bingham	2017-01-18	4	-4/+9
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*	nqasm: reformat argument rules in grammar	Bobby Bingham	2017-01-18	1	-14/+7
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*	nqasm: lex registers as if they were labels	Bobby Bingham	2017-01-18	2	-13/+29
\| \| \| \| \|	This makes parsing registers trickier, but allows a label to have a name 'r0'-'r7', which would otherwise conflict with the registers.
*	nqasm: allow specifying labels for operands	Bobby Bingham	2017-01-18	6	-44/+100
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*	nqasm: store instructions in memory before assembling	Bobby Bingham	2017-01-18	1	-16/+37
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*	nqasm: parse labels	Bobby Bingham	2017-01-17	6	-2/+110
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*	nqdasm: reduce size of line structure	Bobby Bingham	2017-01-15	1	-11/+13
\| \| \| \| \| \| \| \|	This structure represents essentially all the run-time memory use of the disassembler, with 32k instances of it allocated. On 64-bit systems, this cuts the size of a single instance from 16 bytes to 8 bytes. On a 32-bit system, it goes from 12 bytes to 8 bytes.
*	nqdasm: use a static buffer for input lines	Bobby Bingham	2017-01-15	1	-65/+33
\| \| \| \|	Simplifies buffer handling and searches for lines by address.
*	nqdasm: Generate necessary labels for pcoff operands	Bobby Bingham	2017-01-15	1	-1/+48
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*	nqdasm: Factor out operand value extraction code	Bobby Bingham	2017-01-15	1	-10/+28
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*	nqdasm: read entire file into memory before processing	Bobby Bingham	2017-01-15	1	-10/+71
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*	nqdasm: Factor out disassembly code from command line parsing	Bobby Bingham	2017-01-15	1	-16/+21
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*	nqdasm: Add command line opt for input/output files	Bobby Bingham	2017-01-15	1	-13/+80
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*	nqasm: Fix warnings about missing braces in initializers	Bobby Bingham	2017-01-15	1	-2/+2
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*	Turn on compiler warnings	Bobby Bingham	2017-01-15	1	-1/+1
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*	nqdasm: Output .word directives for unknown instructions	Bobby Bingham	2017-01-15	1	-1/+1
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*	nqdasm: improve spacing between mnemonic and operands	Bobby Bingham	2017-01-15	1	-1/+3
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*	nqdasm: Add disassembler	Bobby Bingham	2017-01-15	5	-37/+87
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*	Switch addpc to use pc-offset instead of immediate operand	Bobby Bingham	2017-01-15	2	-2/+5
\| \| \| \| \|	This makes more sense, as the argument is really a signed offset from the program counter.
*	nqasm: Reformat nop grammar	Bobby Bingham	2017-01-15	1	-2/+1
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*	nqasm: Handle pc offset arguments	Bobby Bingham	2017-01-15	1	-14/+20
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*	nqasm: Rename arglist non-terminals to a_*	Bobby Bingham	2017-01-15	1	-39/+46
\| \| \| \| \|	This will allow differentiation between pcoff (a single argument) and a_pcoff (an argument list consisting of only a pcoff argument).
*	nqasm: Handle immediate arguments	Bobby Bingham	2017-01-15	2	-6/+41
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*	nqasm: Handle register and register indirect arguments	Bobby Bingham	2017-01-15	5	-53/+76
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*	nqasm: Improve parsing at end of file	Bobby Bingham	2017-01-15	2	-4/+6
\| \| \| \| \| \| \| \| \|	Bison's implicit $accept rule ends with the END token. The fact that input could also end with END (via the line non-terminal) resulted in a shift reduce conflict. We resolve the conflict by modifying the lexer so that if it encounters end of file partway through a line, it produces a final EOL token before EOF.
*	Add gitignore	Bobby Bingham	2017-01-15	1	-0/+7
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*	nqasm: Initial stab at a lexer and parser	Bobby Bingham	2017-01-15	5	-0/+278
\| \| \| \| \|	So far, this only understands instructions, but no operands or labels. It doesn't handle bad input gracefully. It's just enough to test the basics.
*	Add table of instructions and their encodings	Bobby Bingham	2017-01-15	2	-0/+104