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Make byte encoding use 0xff for no predicate, otherwise preg num.

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git-svn-id: http://www.cdkersey.com/harp/harptool@122 0246edb2-e076-4747-b392-db732a341fa2
This commit is contained in:
chad 2013-01-25 02:07:20 +00:00
parent 7a688ea6ab
commit e8ade7e29e
2 changed files with 5 additions and 17 deletions
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8
src/enc.cpp
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@ -103,8 +103,8 @@ void Decoder::setRefs(const std::vector<Ref*> &refVec) {
Instruction *ByteDecoder::decode(const vector<Byte> &v, Size &n) {
Instruction &inst = *(new Instruction());
RegNum pred = readByte(v, n);
if (pred) inst.setPred(pred - 1);
uint8_t pred = readByte(v, n);
if (pred != 0xff) inst.setPred(pred);
unsigned op = readByte(v, n);
inst.setOpcode(Instruction::Opcode(op));
@ -190,8 +190,8 @@ ByteEncoder::ByteEncoder(const ArchDef &ad) {
Size ByteEncoder::encode(Ref *&ref, vector<Byte> &v, Size n0, Instruction &i) {
Size n(n0);
if (i.hasPred()) writeByte(v, n, i.getPred() + 1);
else writeByte(v, n, 0);
if (i.hasPred()) writeByte(v, n, i.getPred());
else writeByte(v, n, 0xff);
writeByte(v, n, Byte(i.getOpcode()));

14
src/test/sieve.s
View file

@ -12,26 +12,18 @@
.perm x
.entry
.global
entry: ldi %r7, hello; jali %r5, puts;
entry:
ldi %r0, #2; /* i = 2 */
loop1: addi %r7, %r0, #0;
jali %r5, printdec;
muli %r1, %r0, __WORD;
ldi %r7, wrstr;
jali %r5, puts;
st %r0, %r1, array;
ldi %r7, wrfin;
jali %r5, puts;
addi %r0, %r0, #1;
subi %r1, %r0, SIZE;
rtop @p0, %r1;
@p0 ? jmpi loop1;
ldi %r7, xstr;
jali %r5, puts;
ldi %r0, #1;
loop2: addi %r0, %r0, #1;
muli %r1, %r0, __WORD;
@ -78,10 +70,6 @@ loop4: ld %r1, %r0, array;
trap; /* All traps currently cause a halt. */
.perm rw /* TODO: How should I write section permissions? */
hello: .string "\"Harp!\" is how a harp seal says hello!\n"
wrstr: .string "Doing write\n"
wrfin: .string "Did write\n"
xstr: .string "Exiting loop\n"
.global
array: .space 0x1000 /* SIZE words of space. */