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Updated the memory parsing

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It accepts 2 registers, without the displacement
This commit is contained in:
niravthakkar 2017-01-04 16:20:56 +05:30 committed by GitHub
parent 86e5e57f4c
commit 6bbfa48b93
1 changed files with 6 additions and 1 deletions
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7
dynasm/dasm_s390x.lua
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@ -324,6 +324,11 @@ local function split_memop(arg)
if d then if d then
return d, 0, parse_reg(b) return d, 0, parse_reg(b)
end end
-- Assuming the two registers are passed as "(r1,r2)", and displacement(d) is not specified
local x, b = string.match(arg,"%(%s*("..reg..")%s*,%s*("..reg..")%s*%)$")
if b then
return 0, parse_reg(x), parse_reg(b)
end
local reg, tailr = match(arg, "^([%w_:]+)%s*(.*)$") local reg, tailr = match(arg, "^([%w_:]+)%s*(.*)$")
if reg then if reg then
local r, tp = parse_reg(reg) local r, tp = parse_reg(reg)
@ -332,7 +337,7 @@ local function split_memop(arg)
end end
end end
-- TODO: handle values without registers? -- TODO: handle values without registers?
-- TODO: handle registers without a displacement? -- TODO: handle registers without a displacement? -- done, above ,needs to be tested
werror("bad memory operand: "..arg) werror("bad memory operand: "..arg)
return nil return nil
end end