notwa/lips
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use R# instead of REG# for registers

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This commit is contained in:
Connor Olding 2016-05-08 15:49:33 -07:00
parent e4e8e16ea5
commit 0ec6b24531
2 changed files with 9 additions and 10 deletions
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7
README.md
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@ -171,7 +171,7 @@ Whether or not they output the proper machine code is another thing.
In order of numerical value, with intended usage:
* R0: always zero; cannot be changed. 'zero' is an acceptable alias.
* ZERO: always zero; cannot be changed.
* AT: assembler temporary. used by various pseudo-instructions.
user may use freely if they're wary.
@ -196,8 +196,9 @@ In order of numerical value, with intended usage:
* RA: subroutine return address.
* REG#: whereas # is a decimal number from 0 to 31.
aliased to the appropriate register. eg: REG0 is R0, REG1 is at, REG2 is V0.
* R#: whereas # is a decimal number from 0 to 31.
aliased to the appropriate register, for instance:
R0 is ZERO, R1 is at, R2 is V0, etc.
* F#: coprocessor 1 registers, whereas # is a decimal number from 0 to 31.

12
lips/data.lua
View File

@ -2,10 +2,10 @@ local data = {}
data.registers = {
[0]=
'R0', 'AT', 'V0', 'V1', 'A0', 'A1', 'A2', 'A3',
'T0', 'T1', 'T2', 'T3', 'T4', 'T5', 'T6', 'T7',
'S0', 'S1', 'S2', 'S3', 'S4', 'S5', 'S6', 'S7',
'T8', 'T9', 'K0', 'K1', 'GP', 'SP', 'FP', 'RA',
'ZERO', 'AT', 'V0', 'V1', 'A0', 'A1', 'A2', 'A3',
'T0', 'T1', 'T2', 'T3', 'T4', 'T5', 'T6', 'T7',
'S0', 'S1', 'S2', 'S3', 'S4', 'S5', 'S6', 'S7',
'T8', 'T9', 'K0', 'K1', 'GP', 'SP', 'FP', 'RA',
}
data.sys_registers = {
@ -70,13 +70,11 @@ revtable(data.all_registers)
revtable(data.all_directives)
-- alternate register names
data.registers['ZERO'] = 0
data.all_registers['ZERO'] = 0
data.registers['S8'] = 30
data.all_registers['S8'] = 30
for i=0, 31 do
local r = 'REG'..tostring(i)
local r = 'R'..tostring(i)
data.registers[r] = i
data.all_registers[r] = i
end