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re-arrange a few things

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This commit is contained in:
David Schmenk 2018-04-04 20:19:35 -07:00
parent 8b649b0d48
commit 6c6dca3348
1 changed files with 12 additions and 16 deletions
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28
src/libsrc/jitcore.pla
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@ -25,7 +25,7 @@ end
// JIT compiler entry
//
def compiler(defptr)#0
word codeptr, isdata, addrxlate, bytecode, i, case, dest, VX, VY
word codeptr, isdata[], addrxlate, bytecode, i, case, dest, VX, VY
byte opcode, j, A_IS_TOSL
//puts("JIT compiler invoked for :$"); puth(defptr=>bytecodeaddr); putln
@ -38,7 +38,6 @@ def compiler(defptr)#0
return
fin
addrxlate = heapmark
memset(addrxlate, 0, 512) // Clear xlate buffer
//
// Copy bytecode def from AUX to heap for compiling
//
@ -52,19 +51,13 @@ def compiler(defptr)#0
// All PLASMA ops are even (LSB clear), so this will flag when to fence optimizations
// During compiling.
//
isdata = addrxlate // Use this buffer
//isdata = addrxlate // Use this buffer
memset(isdata, 0, 256) // Clear isdata buffer
i = 0
while i <= defptr->bytecodesize
if not ^(isdata+i)
when ^(bytecode+i) & $FE
//
// Multi-byte operands
//
is $2E // CS
i++
i = i + ^(bytecode+i)
break
//
// Double byte operands
//
is $26 // LA
@ -81,7 +74,13 @@ def compiler(defptr)#0
is $B6 // ADDAW
is $BC // IDXAB
is $BE // IDXAW
i++
i = i + 2
break
//
// Multi-byte operands
//
is $2E // CS
i = i + ^(bytecode+i+1)
//
// Single byte operands
//
@ -122,12 +121,9 @@ def compiler(defptr)#0
is $AC // BRAND
is $AE // BROR
i++
//
// Flag branch destination
//
dest = i + *(bytecode+i)
^(bytecode+dest) = ^(bytecode+dest) | 1
i++
^(bytecode+dest) = ^(bytecode+dest) | 1 // Flag as branch dest
break
//
// SELect/caseblock
@ -153,10 +149,10 @@ def compiler(defptr)#0
fin
i++
loop
memset(isdata, 0, 256) // Clear part of xlate buffer used for isdata
//
// Compile the bytecodes
//
memset(addrxlate, 0, 512) // Clear xlate buffer
codeptr = *jitcodeptr
A_IS_TOSL = FALSE
VY = UNKNOWN // Virtual Y register