| Line 236... |
Line 236... |
} ZIPI ZPARSER::op_divs(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
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} ZIPI ZPARSER::op_divs(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
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return IMMOP(ZIPO_DIVS, cnd, imm, a);
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return IMMOP(ZIPO_DIVS, cnd, imm, a);
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}
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}
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|
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ZPARSER::ZIPIMM ZPARSER::immediate(const ZIPI a) {
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ZPARSER::ZIPIMM ZPARSER::immediate(const ZIPI a) {
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ZIPOP op((ZIPOP)((a>>25)&0x012));
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ZIPOP op((ZIPOP)((a>>22)&0x01f));
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ZIPIMM imm;
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ZIPIMM imm;
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|
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switch(op) {
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switch(op) {
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case ZIPO_MOV:
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case ZIPO_MOV:
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imm = (a & 0x0fff); if (a&0x1fff) imm |= -0x1000; break;
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imm = (a & 0x0fff); if (a&0x1fff) imm |= -0x1000; break;
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| Line 252... |
Line 252... |
imm = (a & 0x0ffff); break;
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imm = (a & 0x0ffff); break;
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default:
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default:
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if (a & 0x040000) {
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if (a & 0x040000) {
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imm = (a&0x3fff);
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imm = (a&0x3fff);
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if (a&0x2000) imm |= -0x02000;
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if (a&0x2000) imm |= -0x02000;
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if (imm != 0)
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return false;
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} else {
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} else {
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imm = (a&0x3ffff);
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imm = (a&0x3ffff);
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if (a&0x20000)
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if (a&0x20000)
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imm |= -0x20000;
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imm |= -0x20000;
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}
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}
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| Line 269... |
Line 267... |
bool ZPARSER::can_merge(const ZIPI a, const ZIPI b) {
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bool ZPARSER::can_merge(const ZIPI a, const ZIPI b) {
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// 1. Can't merge anything that's already merged
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// 1. Can't merge anything that's already merged
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if ((a|b) & 0x80000000)
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if ((a|b) & 0x80000000)
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return false;
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return false;
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|
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ZIPOP opa((ZIPOP)((a>>25)&0x012)), opb((ZIPOP)((b>>22)&0x01f));
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ZIPOP opa((ZIPOP)((a>>22)&0x01f)), opb((ZIPOP)((b>>22)&0x01f));
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// 2. Conditions
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// 2. Conditions
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{
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{
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ZIPCOND ca((ZIPCOND)((a>>19)&0x07)),cb((ZIPCOND)((b>>19)&0x07));
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ZIPCOND ca((ZIPCOND)((a>>19)&0x07)),cb((ZIPCOND)((b>>19)&0x07));
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|
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if ((opa == ZIPO_LDI)||(opa == ZIPO_LDIn))
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if ((opa == ZIPO_LDI)||(opa == ZIPO_LDIn))
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| Line 300... |
Line 298... |
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// 4. Immediates. If Register + Immediate, the answer is No.
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// 4. Immediates. If Register + Immediate, the answer is No.
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ZIPIMM imma, immb;
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ZIPIMM imma, immb;
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switch(opa) {
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switch(opa) {
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case ZIPO_MOV:
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case ZIPO_MOV:
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imma = (a & 0x0fff); if (a) return false; break;
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imma = (a & 0x03fff); if (a) return false; break;
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case ZIPO_LDI: case ZIPO_LDIn:
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case ZIPO_LDI: case ZIPO_LDIn:
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case ZIPO_LDILO: case ZIPO_LDIHI:
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case ZIPO_LDILO: case ZIPO_LDIHI:
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imma = immediate(a); break;
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imma = immediate(a); break;
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default:
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default:
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if (a & 0x040000) {
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if (a & 0x040000) {
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