| Line 12... |
Line 12... |
// In particular, all of the routines used to build instructions
|
// In particular, all of the routines used to build instructions
|
// from the appropriate fields are kept in this file. For example,
|
// from the appropriate fields are kept in this file. For example,
|
// op_noop() returns the instruction code for a NOOP instruction.
|
// op_noop() returns the instruction code for a NOOP instruction.
|
//
|
//
|
// Creator: Dan Gisselquist, Ph.D.
|
// Creator: Dan Gisselquist, Ph.D.
|
// Gisselquist Tecnology, LLC
|
// Gisselquist Technology, LLC
|
//
|
//
|
////////////////////////////////////////////////////////////////////////////////
|
////////////////////////////////////////////////////////////////////////////////
|
//
|
//
|
// Copyright (C) 2015, Gisselquist Technology, LLC
|
// Copyright (C) 2015, Gisselquist Technology, LLC
|
//
|
//
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| Line 44... |
Line 44... |
#include <stdio.h>
|
#include <stdio.h>
|
#include <stdlib.h>
|
#include <stdlib.h>
|
#include <string.h>
|
#include <string.h>
|
#include <ctype.h>
|
#include <ctype.h>
|
#include <strings.h>
|
#include <strings.h>
|
|
#include <assert.h>
|
|
|
#include "zparser.h"
|
#include "zparser.h"
|
#include "zopcodes.h"
|
#include "zopcodes.h"
|
|
|
typedef ZPARSER::ZIPI ZIPI; // A Zip Instruction (i.e. uint32)
|
typedef ZPARSER::ZIPI ZIPI; // A Zip Instruction (i.e. uint32)
|
|
|
#define IMMOP(OP,CND,IMM,A) (((OP&0x0f)<<28)|((A&0x0f)<<24)|((CND&0x07)<<21) \
|
#define IMMOP(OP,CND,IMM,A) (((OP&0x01f)<<22)|((A&0x0f)<<27)|((CND&0x07)<<19) \
|
| (IMM & 0x0fffff))
|
| (IMM & 0x03ffff))
|
|
|
#define DBLREGOP(OP,CND,IMM,B,A) (((OP&0x0f)<<28)|((A&0x0f)<<24) \
|
#define DBLREGOP(OP,CND,IMM,B,A) (((OP&0x01f)<<22)|((A&0x0f)<<27) \
|
|((CND&0x07)<<21)|(1<<20)|((B&0x0f)<<16) \
|
|((CND&0x07)<<19)|(1<<18)|((B&0x0f)<<14) \
|
| (IMM & 0x0ffff))
|
| (IMM & 0x03fff))
|
|
|
ZIPI ZPARSER::op_cmp(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_cmp(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return DBLREGOP(0x0, cnd, imm, b, a);
|
return DBLREGOP(ZIPO_CMP, cnd, imm, b, a);
|
}
|
}
|
|
|
ZIPI ZPARSER::op_cmp(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
ZIPI ZPARSER::op_cmp(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return IMMOP(0x0, cnd, imm, a);
|
return IMMOP(ZIPO_CMP, cnd, imm, a);
|
}
|
}
|
|
|
|
|
ZIPI ZPARSER::op_tst(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_tst(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return DBLREGOP(0x1, cnd, imm, b, a);
|
return DBLREGOP(ZIPO_TST, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_tst(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_tst(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return IMMOP(0x1, cnd, imm, a);
|
return IMMOP(ZIPO_TST, cnd, imm, a);
|
}
|
}
|
|
|
ZIPI ZPARSER::op_mov(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_mov(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI in;
|
ZIPI in;
|
in = (0x02 << 28)|((a&0x0f)<<24)|((cnd&0x07)<<21);
|
|
in |= (a&0x10)<<16;
|
in = (ZIPO_MOV)<<22;
|
in |= (b&0x0f)<<16;
|
in |= ((a &0x0f)<<27);
|
in |= (b&0x10)<<11;
|
in |= ((cnd&0x07)<<19);
|
in |= imm & 0x07fff;
|
in |= ((b &0x0f)<<14);
|
|
in |= ( imm&0x01fff);
|
|
|
|
|
|
if (b & 0x10)
|
|
in |= (1<<13);
|
|
if (a & 0x10)
|
|
in |= (1<<18);
|
return in;
|
return in;
|
}
|
}
|
|
|
|
|
ZIPI ZPARSER::op_ldi(ZIPIMM imm, ZIPREG a) const {
|
ZIPI ZPARSER::op_ldi(ZIPIMM imm, ZIPREG a) const {
|
ZIPI in;
|
ZIPI in;
|
in = ((0x03)<<28) | ((a&0x0f)<<24) | (imm & ((1<<24)-1));
|
in = ((a&0x0f)<<27) | (ZIPO_LDI << 22) | (imm & ((1<<23)-1));
|
return in;
|
return in;
|
}
|
}
|
|
|
ZIPI ZPARSER::op_trap(ZIPCOND cnd, ZIPIMM imm) const {
|
ZIPI ZPARSER::op_trap(ZIPCOND cnd, ZIPIMM imm) const {
|
ZIPI in;
|
ZIPI in;
|
| Line 101... |
Line 109... |
// in |= (imm & 0x0ffff);
|
// in |= (imm & 0x0ffff);
|
return in;
|
return in;
|
}
|
}
|
|
|
ZIPI ZPARSER::op_noop(void) const {
|
ZIPI ZPARSER::op_noop(void) const {
|
return 0x4e000000;
|
return 0x76000000;
|
}
|
} ZIPI ZPARSER::op_break(void) const {
|
ZIPI ZPARSER::op_break(void) const {
|
return 0x76400000;
|
return 0x4e000001;
|
} ZIPI ZPARSER::op_lock(void) const {
|
|
return 0x76800000;
|
}
|
}
|
|
|
ZIPI ZPARSER::op_ldihi(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
ZIPI ZPARSER::op_ldihi(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
ZIPI in;
|
ZIPI in = IMMOP(ZIPO_LDIHI, cnd, (imm & 0x0ffff), a);
|
in = ((0x4f)<<24)|((cnd&0x07)<<21)|(1<<20)|((a&0x0f)<<16);
|
|
in |= (imm & 0x0ffff);
|
|
return in;
|
return in;
|
}
|
} ZIPI ZPARSER::op_ldilo(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
ZIPI ZPARSER::op_ldilo(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
ZIPI in = IMMOP(ZIPO_LDILO, cnd, (imm & 0x0ffff), a);
|
ZIPI in;
|
|
in = ((0x4f)<<24)|((cnd&0x07)<<21)|(0<<20)|((a&0x0f)<<16);
|
|
in |= (imm & 0x0ffff);
|
|
return in;
|
return in;
|
}
|
}
|
|
|
ZIPI ZPARSER::op_mpyu(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_mpyu(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return (0x04<<28)|((a&0x0f)<<24)|((cnd&0x7)<<21)|(0<<20)|((b&0x0f)<<16)|(imm & 0x0ffff);
|
return DBLREGOP(ZIPO_MPYU, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_mpyu(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_mpyu(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return (0x04<<28)|((a&0x0f)<<24)|((cnd&0x7)<<21)|(0<<20)|((0x0f)<<16)|(imm & 0x0ffff);
|
return IMMOP(ZIPO_MPYU, cnd, imm & 0x0ffff, a);
|
}
|
}
|
|
|
ZIPI ZPARSER::op_mpys(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_mpys(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return (0x04<<28)|((a&0x0f)<<24)|((cnd&0x7)<<21)|(1<<20)|((b&0x0f)<<16)|(imm & 0x0ffff);
|
return DBLREGOP(ZIPO_MPYS, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_mpys(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_mpys(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return (0x04<<28)|((a&0x0f)<<24)|((cnd&0x7)<<21)|(1<<20)|((0x0f)<<16)|(imm & 0x0ffff);
|
return IMMOP(ZIPO_MPYS, cnd, imm & 0x0ffff, a);
|
}
|
}
|
|
|
ZIPI ZPARSER::op_rol(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_rol(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return DBLREGOP(0x5, cnd, imm, b, a);
|
return DBLREGOP(ZIPO_ROL, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_rol(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_rol(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return IMMOP(0x5, cnd, imm, a);
|
return IMMOP(ZIPO_ROL, cnd, imm, a);
|
|
}
|
|
|
|
ZIPI ZPARSER::op_popc(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
|
return DBLREGOP(ZIPO_POPC, cnd, imm, b, a);
|
|
} ZIPI ZPARSER::op_popc(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
|
return IMMOP(ZIPO_POPC, cnd, imm, a);
|
|
}
|
|
|
|
ZIPI ZPARSER::op_brev(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
|
return DBLREGOP(ZIPO_BREV, cnd, imm, b, a);
|
|
} ZIPI ZPARSER::op_brev(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
|
return IMMOP(ZIPO_BREV, cnd, imm, a);
|
}
|
}
|
|
|
ZIPI ZPARSER::op_lod(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_lod(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return DBLREGOP(0x6, cnd, imm, b, a);
|
return DBLREGOP(ZIPO_LOD, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_lod(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_lod(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return IMMOP(0x6, cnd, imm, a);
|
return IMMOP(ZIPO_LOD, cnd, imm, a);
|
}
|
}
|
|
|
|
|
ZIPI ZPARSER::op_sto(ZIPCOND cnd, ZIPREG v, ZIPIMM imm, ZIPREG b) const {
|
ZIPI ZPARSER::op_sto(ZIPCOND cnd, ZIPREG v, ZIPIMM imm, ZIPREG b) const {
|
return DBLREGOP(0x7, cnd, imm, b, v);
|
return DBLREGOP(ZIPO_STO, cnd, imm, b, v);
|
} ZIPI ZPARSER::op_sto(ZIPCOND cnd, ZIPREG v, ZIPIMM imm) const {
|
} ZIPI ZPARSER::op_sto(ZIPCOND cnd, ZIPREG v, ZIPIMM imm) const {
|
return IMMOP(0x7, cnd, imm, v);
|
return IMMOP(ZIPO_STO, cnd, imm, v);
|
}
|
}
|
|
|
|
|
ZIPI ZPARSER::op_sub(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_sub(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return DBLREGOP(0x8, cnd, imm, b, a);
|
return DBLREGOP(ZIPO_SUB, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_sub(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_sub(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
// While it seems like we might do well replacing a subtract immediate
|
// While it seems like we might do well replacing a subtract immediate
|
// with an add of the negative same, the conditions aren't the same
|
// with an add of the negative same, the conditions aren't the same
|
// when doing so. Hence this is an invalid substitution.
|
// when doing so. Hence this is an invalid substitution.
|
// return IMMOP(0xa, cnd, -imm, a); // Do an add of the negative of imm
|
// return IMMOP(0xa, cnd, -imm, a); // Do an add of the negative of imm
|
return IMMOP(0x8, cnd, imm, a);
|
return IMMOP(ZIPO_SUB, cnd, imm, a);
|
}
|
}
|
|
|
|
|
ZIPI ZPARSER::op_and(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_and(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return DBLREGOP(0x9, cnd, imm, b, a);
|
return DBLREGOP(ZIPO_AND, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_and(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_and(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return IMMOP(0x9, cnd, imm, a);
|
return IMMOP(ZIPO_AND, cnd, imm, a);
|
}
|
}
|
|
|
|
|
ZIPI ZPARSER::op_add(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_add(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return DBLREGOP(0xa, cnd, imm, b, a);
|
return DBLREGOP(ZIPO_ADD, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_add(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_add(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return IMMOP(0xa, cnd, imm, a);
|
return IMMOP(ZIPO_ADD, cnd, imm, a);
|
}
|
}
|
|
|
|
|
ZIPI ZPARSER::op_or(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_or(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return DBLREGOP(0xb, cnd, imm, b, a);
|
return DBLREGOP(ZIPO_OR, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_or(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_or(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return IMMOP(0xb, cnd, imm, a);
|
return IMMOP(ZIPO_OR, cnd, imm, a);
|
}
|
}
|
|
|
ZIPI ZPARSER::op_xor(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_xor(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return DBLREGOP(0xc, cnd, imm, b, a);
|
return DBLREGOP(ZIPO_XOR, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_xor(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_xor(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return IMMOP(0xc, cnd, imm, a);
|
return IMMOP(ZIPO_XOR, cnd, imm, a);
|
}
|
}
|
|
|
ZIPI ZPARSER::op_lsl(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_lsl(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return DBLREGOP(0xd, cnd, imm, b, a);
|
return DBLREGOP(ZIPO_LSL, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_lsl(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_lsl(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return IMMOP(0xd, cnd, imm, a);
|
return IMMOP(ZIPO_LSL, cnd, imm, a);
|
}
|
}
|
|
|
ZIPI ZPARSER::op_asr(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_asr(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return DBLREGOP(0xe, cnd, imm, b, a);
|
return DBLREGOP(ZIPO_ASR, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_asr(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_asr(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return IMMOP(0xe, cnd, imm, a);
|
return IMMOP(ZIPO_ASR, cnd, imm, a);
|
}
|
}
|
|
|
ZIPI ZPARSER::op_lsr(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
ZIPI ZPARSER::op_lsr(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
return DBLREGOP(0xf, cnd, imm, b, a);
|
return DBLREGOP(ZIPO_LSR, cnd, imm, b, a);
|
} ZIPI ZPARSER::op_lsr(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
} ZIPI ZPARSER::op_lsr(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
return IMMOP(0xf, cnd, imm, a);
|
return IMMOP(ZIPO_LSR, cnd, imm, a);
|
}
|
}
|
|
|
|
ZIPI ZPARSER::op_divu(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
|
return DBLREGOP(ZIPO_DIVU, cnd, imm, b, a);
|
|
} ZIPI ZPARSER::op_divu(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
|
return IMMOP(ZIPO_DIVU, cnd, imm, a);
|
|
}
|
|
|
|
ZIPI ZPARSER::op_divs(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
|
|
return DBLREGOP(ZIPO_DIVS, cnd, imm, b, a);
|
|
} ZIPI ZPARSER::op_divs(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
|
|
return IMMOP(ZIPO_DIVS, cnd, imm, a);
|
|
}
|
|
|
|
ZPARSER::ZIPIMM ZPARSER::immediate(const ZIPI a) {
|
|
ZIPOP op((ZIPOP)((a>>25)&0x012));
|
|
ZIPIMM imm;
|
|
|
|
switch(op) {
|
|
case ZIPO_MOV:
|
|
imm = (a & 0x0fff); if (a&0x1fff) imm |= -0x1000; break;
|
|
case ZIPO_LDI:
|
|
imm = (a & 0x03fffff); break;
|
|
case ZIPO_LDIn:
|
|
imm = (a & 0x03fffff); imm |= -0x200000; break;
|
|
case ZIPO_LDILO: case ZIPO_LDIHI:
|
|
imm = (a & 0x0ffff); break;
|
|
default:
|
|
if (a & 0x040000) {
|
|
imm = (a&0x3fff);
|
|
if (a&0x2000) imm |= -0x02000;
|
|
if (imm != 0)
|
|
return false;
|
|
} else {
|
|
imm = (a&0x3ffff);
|
|
if (a&0x20000)
|
|
imm |= -0x20000;
|
|
}
|
|
}
|
|
|
|
return imm;
|
|
}
|
|
|
|
bool ZPARSER::can_merge(const ZIPI a, const ZIPI b) {
|
|
// 1. Can't merge anything that's already merged
|
|
if ((a|b) & 0x80000000)
|
|
return false;
|
|
|
|
ZIPOP opa((ZIPOP)((a>>25)&0x012)), opb((ZIPOP)((b>>22)&0x01f));
|
|
// 2. Conditions
|
|
{
|
|
ZIPCOND ca((ZIPCOND)((a>>19)&0x07)),cb((ZIPCOND)((b>>19)&0x07));
|
|
|
|
if ((opa == ZIPO_LDI)||(opa == ZIPO_LDIn))
|
|
ca = ZIPC_ALWAYS;
|
|
if ((opb == ZIPO_LDI)||(opb == ZIPO_LDIn))
|
|
cb = ZIPC_ALWAYS;
|
|
|
|
if ((ca == ZIPC_ALWAYS)&&(cb != ZIPC_ALWAYS))
|
|
return false;
|
|
if ((ca|cb) &0x04)
|
|
return false;
|
|
if ((ca != ZIPC_ALWAYS)&&((cb != ca)&&(cb != ZIPC_ALWAYS)))
|
|
return false;
|
|
// if ((ca != ZIPC_ALWAYS)||(cb != ZIPC_ALWAYS))
|
|
// return false;
|
|
}
|
|
|
|
// 3. Moves ... only move if the move doesn't address user registers
|
|
|
|
if ((opa == ZIPO_MOV)&&(a & ((1<<18)|(1<<13))))
|
|
return false;
|
|
if ((opb == ZIPO_MOV)&&(b & ((1<<18)|(1<<13))))
|
|
return false;
|
|
|
|
// 4. Immediates. If Register + Immediate, the answer is No.
|
|
ZIPIMM imma, immb;
|
|
switch(opa) {
|
|
case ZIPO_MOV:
|
|
imma = (a & 0x0fff); if (a) return false; break;
|
|
case ZIPO_LDI: case ZIPO_LDIn:
|
|
case ZIPO_LDILO: case ZIPO_LDIHI:
|
|
imma = immediate(a); break;
|
|
default:
|
|
if (a & 0x040000) {
|
|
imma = (a&0x3ffff);
|
|
// if (a&0x20000) a |= -0x20000;
|
|
if (imma != 0)
|
|
return false;
|
|
} else {
|
|
imma = (a&0x3fff);
|
|
if (a&0x2000) // Sign extension?
|
|
imma |= -0x02000;
|
|
}
|
|
} switch(opb) {
|
|
case ZIPO_MOV:
|
|
immb = (b & 0x0fff); if (b) return false; break;
|
|
case ZIPO_LDI: case ZIPO_LDIn:
|
|
case ZIPO_LDILO: case ZIPO_LDIHI:
|
|
immb = immediate(b); break;
|
|
default:
|
|
if (b & 0x040000) {
|
|
immb = (b&0x3fff);
|
|
// if (b&0x2000) b |= -0x02000;
|
|
if (immb != 0)
|
|
return false;
|
|
} else {
|
|
immb = (b&0x3ffff);
|
|
if (b&0x20000)
|
|
immb |= -0x20000;
|
|
}
|
|
}
|
|
|
|
if ((opa == ZIPO_LDI)||(opa == ZIPO_LDIn)||(opa == ZIPO_LDILO)||(opa == ZIPO_LDIHI)) {
|
|
if ((imma > 15)||(imma < -16))
|
|
return false;
|
|
} else if ((imma > 7)||(imma < -8))
|
|
return false;
|
|
if ((opb == ZIPO_LDI)||(opb == ZIPO_LDIn)||(opb == ZIPO_LDILO)||(opb == ZIPO_LDIHI)) {
|
|
if ((immb > 15)||(immb < -16))
|
|
return false;
|
|
} else if ((immb > 7)||(immb < -8))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
ZIPI ZPARSER::merge(const ZIPI a, const ZIPI b) {
|
|
assert(can_merge(a, b));
|
|
ZIPI ni;
|
|
|
|
ZIPCOND ca( (ZIPCOND)((a>>19)&0x007)), cb( (ZIPCOND)((b>>19)&0x007));
|
|
ZIPOP opa((ZIPOP)((a>>25)&0x012)), opb((ZIPOP)((b>>22)&0x01f));
|
|
|
|
if ((opa == ZIPO_LDI)||(opa == ZIPO_LDIn))
|
|
ca = ZIPC_ALWAYS;
|
|
if ((opb == ZIPO_LDI)||(opb == ZIPO_LDIn))
|
|
cb = ZIPC_ALWAYS;
|
|
|
|
ZIPIMM imma, immb;
|
|
imma = immediate(a);
|
|
immb = immediate(b);
|
|
|
|
ni = (opa << 26)|(opb<<9)|0x80000000;
|
|
if (ca != ZIPC_ALWAYS) {
|
|
ni |= (ca << 19);
|
|
if (cb == ca)
|
|
ni |= (1<<21);
|
|
}
|
|
|
|
// The result register(s)
|
|
ni |= (a & 0x78000000);
|
|
ni |= ((b>>27)&0x0f)<<5;
|
|
|
|
// Are we using the register form of opB?
|
|
switch(opa) {
|
|
case ZIPO_MOV: ni |= (a&0x078000); break; // Always a register
|
|
case ZIPO_LDI: case ZIPO_LDIn:
|
|
case ZIPO_LDILO: case ZIPO_LDIHI:
|
|
ni |= (imma & 0x01f)<<14;
|
|
break;
|
|
default:
|
|
if (a & 0x040000) {
|
|
ni |= (a&0x078000);
|
|
} else
|
|
ni |= (imma & 0x0f)<<14;
|
|
}
|
|
|
|
switch(opb) {
|
|
case ZIPO_MOV:
|
|
ni |= ((b>>14)&0x0f)|0x10; break;
|
|
case ZIPO_LDI: case ZIPO_LDIn:
|
|
case ZIPO_LDILO: case ZIPO_LDIHI:
|
|
ni |= (immb & 0x01f);
|
|
break;
|
|
default:
|
|
if (b & 0x040000) {
|
|
ni |= ((b>>14)&0x0f)|0x10;
|
|
} else
|
|
ni |= (immb & 0x0f);
|
|
}
|
|
|
|
return ni;
|
|
}
|
|
|
No newline at end of file
|
No newline at end of file
|
