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mkdrom.c
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mkdrom.c
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/*
Copyright (c) 2024, Alexey Frunze
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
SediCiPU2 decoder ROM generator.
How to compile: gcc -std=c99 -O2 -Wall mkdrom.c -o mkdrom.exe
*/
#include <limits.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#define STATIC_ASSERT(x) extern char StAtIcAsSeRt[(x) ? 1 : -1]
STATIC_ASSERT(CHAR_BIT == 8);
enum
{
CLK_BITS = 1,
INSTR_BITS = 11,
IN_BITS = CLK_BITS + INSTR_BITS,
IN_CNT = 1 << IN_BITS
};
enum
{
POS_OP,
POS_RL = POS_OP + 4,
POS_RLOE = POS_RL + 3,
POS_RR,
POS_RROE = POS_RR + 3,
POS_RI,
POS_RIWE = POS_RI + 3,
POS_IMM,
POS_RRBUSOE = POS_IMM + 3,
POS_ALUOE,
POS_FLAGSOE,
POS_FLAGSWE,
POS_IADDRSEL,
POS_IWE,
POS_SELE,
POS_SELIFLAGSSEL,
POS_CNZ,
POS_MWE,
POS_MOE,
POS_W16,
POS_CRST
};
typedef unsigned short ushort;
typedef unsigned uint;
typedef unsigned long ulong;
ulong rom[IN_CNT];
uint idx0_6(uint clk, uint n0_6, uint rrr, uint RRR, uint L/*bit 0*/)
{
return (clk << INSTR_BITS) | (0 << (INSTR_BITS - 1)) |
(n0_6 << (3 + 3 + 1)) |
(rrr << (3 + 1)) | (RRR << 1) | L;
}
uint idx7(uint clk, uint rrr, uint m/*3 bits*/, uint PPP, uint Q/*1 bit*/)
{
return (clk << INSTR_BITS) | (1 << (INSTR_BITS - 1)) |
(rrr << (3 + 3 + 1)) | (m << (3 + 1)) | (PPP << 1) | Q;
}
void fill(uint idx,
ulong CRST,
ulong MOE, ulong MWE, ulong W16,
ulong RI, ulong RIWE, ulong RL, ulong RLOE, ulong RR, ulong RROE, ulong IMM,
ulong OP, ulong ALUOE, ulong FLAGSWE, ulong IADDRSEL, ulong FLAGSOE, ulong CNZ,
ulong RRBUSOE,
ulong IWE, ulong SELE, ulong SELIFLAGSSEL)
{
rom[idx] = (CRST << POS_CRST) |
(MOE << POS_MOE) | (MWE << POS_MWE) | (W16 << POS_W16) |
(RI << POS_RI) | (RIWE << POS_RIWE) |
(RL << POS_RL) | (RLOE << POS_RLOE) |
(RR << POS_RR) | (RROE << POS_RROE) | (IMM << POS_IMM) |
(OP << POS_OP) |
(ALUOE << POS_ALUOE) | (FLAGSWE << POS_FLAGSWE) |
(IADDRSEL << POS_IADDRSEL) | (FLAGSOE << POS_FLAGSOE) | (CNZ << POS_CNZ) |
(RRBUSOE << POS_RRBUSOE) |
(IWE << POS_IWE) | (SELE << POS_SELE) | (SELIFLAGSSEL << POS_SELIFLAGSSEL);
}
FILE* startup(int argc, char* argv[], char** outname, int* bigendian)
{
FILE* f;
if (argc < 2 || argc > 3)
{
lusage:
fprintf(stderr,
"Usage:\n"
" mkdrom [options] <output_file>\n"
"Options:\n"
" -be big-endian output\n");
exit(EXIT_FAILURE);
}
if ((*bigendian = !strcmp(argv[1], "-be")) != 0)
{
if (argc < 3)
goto lusage;
*outname = argv[2];
}
else
{
if (argc > 2)
goto lusage;
*outname = argv[1];
}
if ((f = fopen(*outname, "wb")) == NULL)
{
fprintf(stderr, "Can't create file \"%s\"\n", *outname);
exit(EXIT_FAILURE);
}
return f;
}
void writebytes(FILE* f, char* outname, int bigendian, int nbytes, ulong value)
{
int i;
if (bigendian)
{
ulong tmp = 0;
for (i = 0; i < nbytes; i++)
{
tmp = (tmp << 8) | (value & 0xFFU);
value >>= 8;
}
value = tmp;
}
for (i = 0; i < nbytes; i++)
{
if (fputc(value & 0xFFU, f) == EOF)
{
fprintf(stderr, "Can't write to file \"%s\"\n", outname);
exit(EXIT_FAILURE);
}
value >>= 8;
}
}
int main(int argc, char* argv[])
{
int bigendian = 0;
char* outname = NULL;
FILE* f = startup(argc, argv, &outname, &bigendian);
uint rrr, RRR, w, L, PPP, Q;
#if 0
idx0_6(/*clk*/, /*n0_6*/, /*rrr*/, /*RRR*/, /*L=bit 0*/)
idx7(/*clk*/, /*rrr*/, /*m=3 bits*/, /*PPP*/, /*Q=1 bit*/)
fill(/*idx*/,
/*CRST*/,
/*MOE*/, /*MWE*/, /*W16*/,
/*RI*/, /*RIWE*/, /*RL*/, /*RLOE*/, /*RR*/, /*RROE*/, /*IMM*/0,
/*OP*/, /*ALUOE*/, /*FLAGSWE*/, /*IADDRSEL*/, /*FLAGSOE*/, /*CNZ*/,
/*RRBUSOE*/,
/*IWE*/, /*SELE*/, /*SELIFLAGSSEL*/);
#endif
// Fill the unused space with "code" for infinite loop.
{
uint idx;
for (idx = 0; idx < IN_CNT; idx++)
{
// pc = pc + (-2)
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/7, /*RIWE*/1, /*RL*/7, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
/*
00wrrrRRR7777777 lb/lw rrr, (RRR + ximm7) ; rrr!=sp,pc when lb
000rrrRRR7777777 and RRR, imm7 ; when lb, rrr==sp, RRR!=sp,pc
000rrrRRR7777777 or RRR, imm7 ; when lb, rrr==pc, RRR!=sp,pc
000rrrRRR7777777 addm0 r, (R+ximm7) ; when lb, rrr==sp, RRR==sp
000rrrRRR7777777 addm1 r, (R+ximm7) ; when lb, rrr==sp, RRR==pc
000rrrRRR7777777 addm2 r, (R+ximm7) ; when lb, rrr==pc, RRR==sp
000rrrRRR7777777 addm3 r, (R+ximm7) ; when lb, rrr==pc, RRR==pc
001rrrRRR7777771 incm/decm (rrr), simm7 ; when lw, rrr!=sp,pc, RRR==sp, odd-valued simm7
001rrrRRR7777771 adcz rrr[, imm6] ; when lw, rrr!=sp,pc, RRR==pc, odd-valued imm7
*/
for (w = 0; w <= 1; w++)
for (rrr = 0; rrr <= 7; rrr++)
for (RRR = 0; RRR <= 7; RRR++)
for (L = 0; L <= 1; L++)
{
uint idx = idx0_6(/*clk*/0, /*n0_6*/w, /*rrr*/rrr, /*RRR*/RRR, /*L=bit 0*/L);
if (rrr <= 5 && w && RRR == 6 && L) // incm/decm
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/rrr, /*RIWE*/1, /*RL*/rrr, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/0, // DelayReg = rrr & -1
/*OP*/14, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // rrr = mem[rrr & -1]
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/1, /*W16*/1,
/*RI*/0, /*RIWE*/0, /*RL*/rrr, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/1, /*FLAGSOE*/0, /*CNZ*/0, // mem[DelayReg] = rrr + simm7
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else if (rrr <= 5 && w && RRR == 7 && L) // adcz
{
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/rrr, /*RIWE*/1, /*RL*/0, /*RLOE*/0, /*RR*/rrr, /*RROE*/1, /*IMM*/0,
/*OP*/10, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/1, // rrr = 0 + rrr + Carry
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else if (w || rrr <= 5) // lb/lw
{
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/1, /*MWE*/0, /*W16*/w,
/*RI*/rrr, /*RIWE*/1, /*RL*/RRR, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2 - (RRR == 6),
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else if (RRR <= 5) // and/or
{
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/RRR, /*RIWE*/1, /*RL*/RRR, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/1,
/*OP*/14 + (rrr & 1), /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else // addm0...3 r, (R+ximm7)
{
uint rR = (rrr & 1) * 2 + (RRR & 1);
uint r = rR / 6;
uint mod = rR % 6;
uint R = mod + (mod >= r);
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/5, /*RIWE*/1, /*RL*/R, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2 - (R == 6),
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/r, /*RIWE*/1, /*RL*/r, /*RLOE*/1, /*RR*/5, /*RROE*/1, /*IMM*/0,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
/*
01wrrrRRR7777777 sb/sw rrr, (RRR + ximm7) ; rrr!=RRR ; rrr!=sp,pc when sb ; rrr!=pc when sw
010rrrRRR7777777 xor RRR, imm7 ; when sb, rrr==sp, RRR!=sp,pc
010rrrRRR7777777 cmp RRR, simm7 ; when sb, rrr==pc, RRR!=sp,pc
010rrrRRR7777777 addm4 r, (R+ximm7) ; when sb, rrr==sp, RRR==sp
010rrrRRR7777777 addm5 r, (R+ximm7) ; when sb, rrr==sp, RRR==pc
010rrrRRR7777771 push r0 ; when sb, rrr==sp, RRR==pc, odd-valued imm7
010rrrRRR7777777 addm6 r, (R+ximm7) ; when sb, rrr==pc, RRR==sp
010rrrRRR7777777 addm7 r, (R+ximm7) ; when sb, rrr==pc, RRR==pc
010rrrRRR7777777 subm0x r, (R+ximm7) ; when sb, (rrr==RRR)!=sp,pc
010rrrRRR7777771 push r2 ; when sb, (rrr==RRR)==5, odd-valued imm7
011rrrRRR7777777 subm1x r, (R+ximm7) ; when sw, (rrr==RRR)!=sp,pc
011rrrRRR7777771 push r3 ; when sw, (rrr==RRR)==5, odd-valued imm7
011rrrRRR7777777 subm2x r, (R+ximm7) ; when sw, rrr==pc, RRR!=sp,pc
011rrrRRR7777771 push r4 ; when sw, rrr==pc, RRR==5, odd-valued imm7
011rrrRRR7777777 addm12 r, (R+ximm7) ; when sw, rrr==pc, RRR==sp
011rrrRRR7777777 addm13 r, (R+ximm7) ; when sw, rrr==pc, RRR==pc
011rrrRRR7777771 dincm (rrr) [, imm6] ; when sw, rrr!=sp,pc, RRR==sp, odd-valued imm7
011rrrRRR7777771 ddecm (rrr) [, imm6] ; when sw, rrr!=sp,pc, RRR==pc, odd-valued imm7
*/
for (w = 0; w <= 1; w++)
for (rrr = 0; rrr <= 7; rrr++)
for (RRR = 0; RRR <= 7; RRR++)
for (L = 0; L <= 1; L++)
{
uint idx = idx0_6(/*clk*/0, /*n0_6*/2 + w, /*rrr*/rrr, /*RRR*/RRR, /*L=bit 0*/L);
if (rrr == RRR && RRR <= 5) // subm0x,subm1x RRR / push r2/r3
{
if (rrr == 5 && L) // push r2/r3
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/0, /*MWE*/1, /*W16*/1,
/*RI*/0, /*RIWE*/0, /*RL*/6, /*RLOE*/1, /*RR*/2 + w, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // mem[sp + (-2)] = r2/r3
/*RRBUSOE*/1,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/6, /*RIWE*/1, /*RL*/6, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // sp = sp + (-2)
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else // subm0x,subm1x RRR
{
uint r = w;
uint R = RRR + (RRR >= r);
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/5, /*RIWE*/1, /*RL*/R, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2 - (R == 6),
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/r, /*RIWE*/1, /*RL*/r, /*RLOE*/1, /*RR*/5, /*RROE*/1, /*IMM*/0,
/*OP*/9, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
else if (w && rrr == 7 && RRR <= 5) // subm2x RRR / push r4
{
if (RRR == 5 && L) // push r4
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/0, /*MWE*/1, /*W16*/1,
/*RI*/0, /*RIWE*/0, /*RL*/6, /*RLOE*/1, /*RR*/4, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // mem[sp + (-2)] = r4
/*RRBUSOE*/1,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/6, /*RIWE*/1, /*RL*/6, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // sp = sp + (-2)
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else // subm2x RRR
{
uint r = 2;
uint R = RRR + (RRR >= r);
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/5, /*RIWE*/1, /*RL*/R, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2 - (R == 6),
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/r, /*RIWE*/1, /*RL*/r, /*RLOE*/1, /*RR*/5, /*RROE*/1, /*IMM*/0,
/*OP*/9, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
else if (rrr <= 5 && w && RRR >= 6 && L) // dincm/ddecm
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/rrr, /*RIWE*/1, /*RL*/rrr, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/0, // DelayReg = rrr & -1
/*OP*/14, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // rrr = mem[rrr & -1]
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/1, /*W16*/1,
/*RI*/0, /*RIWE*/0, /*RL*/rrr, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/7,
/*OP*/9 - (RRR & 1), /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/1, /*FLAGSOE*/0, /*CNZ*/0, // mem[DelayReg] = rrr +/- (-2)
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else if ((w && rrr <= 6) || (!w && rrr <= 5)) // sb/sw
{
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/1, /*W16*/w,
/*RI*/0, /*RIWE*/0, /*RL*/RRR, /*RLOE*/1, /*RR*/rrr, /*RROE*/0, /*IMM*/2 - (RRR == 6),
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/1,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else if (!w) // xor/cmp/j<cond>
{
if (RRR <= 5) // xor/cmp
{
int is_xor = (rrr == 6);
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/RRR, /*RIWE*/is_xor, /*RL*/RRR, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/(is_xor ? 1 : 2),
/*OP*/(is_xor ? 7 : 9), /*ALUOE*/is_xor, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else // addm4...7 r, (R+ximm7) / push r0
{
uint rR = 4 + (rrr & 1) * 2 + (RRR & 1);
uint r = rR / 6;
uint mod = rR % 6;
uint R = mod + (mod >= r);
if (rR == 5 && L) // push r0
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/0, /*MWE*/1, /*W16*/1,
/*RI*/0, /*RIWE*/0, /*RL*/6, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // mem[sp + (-2)] = r0
/*RRBUSOE*/1,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/6, /*RIWE*/1, /*RL*/6, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // sp = sp + (-2)
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else // addm4...7 r, (R+ximm7)
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/5, /*RIWE*/1, /*RL*/R, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2 - (R == 6),
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/r, /*RIWE*/1, /*RL*/r, /*RLOE*/1, /*RR*/5, /*RROE*/1, /*IMM*/0,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
}
else // addm12...13 r, (R+ximm7)
{
uint rR = 12 + (RRR & 1);
uint r = rR / 6;
uint mod = rR % 6;
uint R = mod + (mod >= r);
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/5, /*RIWE*/1, /*RL*/R, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2 - (R == 6),
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/r, /*RIWE*/1, /*RL*/r, /*RLOE*/1, /*RR*/5, /*RROE*/1, /*IMM*/0,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
/*
100rrrRRR7777777 add rrr, RRR, simm7 ; except {sp,pc,imm},{pc,sp,imm},{pc,pc,imm} ; `add pc, RRR, simm7` preserves flags (ditto `sp,RRR,simm7`)
100rrrRRR7777771 swi simm6*2 ; when rrr==sp, RRR==sp, odd-valued simm7 ; invokes ISR at (simm7&(-2)), disabling interrupts
100rrrRRR7777777 push simm7 ; when rrr==sp, RRR==pc
100rrrRRR7777777 addm8 r, (R+ximm7) ; when rrr==pc, RRR==sp
100rrrRRR7777777 addm9 r, (R+ximm7) ; when rrr==pc, RRR==pc
*/
for (rrr = 0; rrr <= 7; rrr++)
for (RRR = 0; RRR <= 7; RRR++)
for (L = 0; L <= 1; L++)
{
uint idx = idx0_6(/*clk*/0, /*n0_6*/4, /*rrr*/rrr, /*RRR*/RRR, /*L=bit 0*/L);
if ((rrr == 6) && (RRR == 6) && L) // swi
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/0, /*MWE*/1, /*W16*/1,
/*RI*/0, /*RIWE*/0, /*RL*/7, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/1, /*FLAGSOE*/0, /*CNZ*/0, // mem[DelayReg=sp + (-2)] = pc + (-2) + interrupt enable flag
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/7, /*RIWE*/1, /*RL*/0, /*RLOE*/0, /*RR*/0, /*RROE*/0, /*IMM*/2,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/1, // pc = 0 + simm7
/*RRBUSOE*/0,
/*IWE*/1, /*SELE*/0, /*SELIFLAGSSEL*/0); // interrupt enable flag = 0
}
else if ((rrr == 6) && (RRR == 7)) // push simm7
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/0, /*MWE*/1, /*W16*/1,
/*RI*/0, /*RIWE*/0, /*RL*/0, /*RLOE*/0, /*RR*/0, /*RROE*/0, /*IMM*/2,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/1, /*FLAGSOE*/0, /*CNZ*/1, // mem[DelayReg=sp + (-2)] = 0 + simm7
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/6, /*RIWE*/1, /*RL*/6, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // sp = sp + (-2)
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else if (((rrr <= 6) && (RRR <= 6)) ||
((rrr == 7) && (RRR <= 5)) ||
((rrr <= 5) && (RRR == 7))) // add
{
if ((rrr == 7) && L) // add with link
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/5, /*RIWE*/1, /*RL*/RRR, /*RLOE*/1, /*RR*/7, /*RROE*/0, /*IMM*/2, // r5 = pc
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // DelayReg = RRR + simm7
/*RRBUSOE*/1,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/7, /*RIWE*/1, /*RL*/0, /*RLOE*/0, /*RR*/0, /*RROE*/0, /*IMM*/0,
/*OP*/14, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // pc = DelayReg & -1
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else if ((rrr != 6) || !L) // add without link
{
int is_quiet = (rrr >= 6);
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/rrr, /*RIWE*/1, /*RL*/RRR, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/!is_quiet, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
else if ((rrr == 7) && (RRR >= 6)) // addm8...9 r, (R+ximm7)
{
uint rR = 8 + (RRR & 1);
uint r = rR / 6;
uint mod = rR % 6;
uint R = mod + (mod >= r);
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/5, /*RIWE*/1, /*RL*/R, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2 - (R == 6),
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/r, /*RIWE*/1, /*RL*/r, /*RLOE*/1, /*RR*/5, /*RROE*/1, /*IMM*/0,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
/*
101rrr0999999999 li rrr, simm9 ; when rrr!=sp,pc ; rrr = simm9
101rrr1999999999 addu rrr, imm9 ; when rrr!=pc ; rrr += imm9 << 7 ; `addu sp, imm9` preserves flags
101rrr0999999990 ? simm8*2 ; when rrr==sp, even-valued imm9
101rrr0999999991 j simm8*2 ; when rrr==sp, odd-valued imm9
101rrrRRR7777777 subm3x r, (R+ximm7) ; when rrr==pc, RRR!=sp,pc
101rrrRRR7777771 push r5 ; when rrr==pc, RRR==5, odd-valued imm7
101rrrRRR7777777 addm10 r, (R+ximm7) ; when rrr==pc, RRR==sp
101rrrRRR7777777 addm11 r, (R+ximm7) ; when rrr==pc, RRR==pc
101rrrRRR7777771 push r1 ; when rrr==pc, RRR==pc, odd-valued imm7
*/
for (rrr = 0; rrr <= 7; rrr++)
for (RRR = 0; RRR <= 7; RRR++)
for (L = 0; L <= 1; L++)
{
uint idx = idx0_6(/*clk*/0, /*n0_6*/5, /*rrr*/rrr, /*RRR*/RRR, /*L=bit 0*/L);
if ((rrr == 6) && (RRR < 4)) // j/?
{
if (L) // j
{
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/7, /*RIWE*/1, /*RL*/7, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/5,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // pc = pc + simm9
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
else if (rrr != 7) // li/addu
{
if (RRR >= 4) // addu
{
int is_quiet = (rrr == 6);
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/rrr, /*RIWE*/1, /*RL*/rrr, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/4,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/!is_quiet, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // rrr = rrr + (imm9 << 7)
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else // li
{
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/rrr, /*RIWE*/1, /*RL*/0, /*RLOE*/0, /*RR*/0, /*RROE*/0, /*IMM*/5,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/1, // rrr = 0 + simm9
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
else if (RRR <= 5) // subm3x RRR / push r5
{
if (RRR == 5 && L) // push r5
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/0, /*MWE*/1, /*W16*/1,
/*RI*/0, /*RIWE*/0, /*RL*/6, /*RLOE*/1, /*RR*/5, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // mem[sp + (-2)] = r5
/*RRBUSOE*/1,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/6, /*RIWE*/1, /*RL*/6, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // sp = sp + (-2)
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else // subm3x RRR
{
uint r = 3;
uint R = RRR + (RRR >= r);
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/5, /*RIWE*/1, /*RL*/R, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2 - (R == 6),
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/r, /*RIWE*/1, /*RL*/r, /*RLOE*/1, /*RR*/5, /*RROE*/1, /*IMM*/0,
/*OP*/9, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
else // addm10...11 r, (R+ximm7) / push r1
{
uint rR = 10 + (RRR & 1);
uint r = rR / 6;
uint mod = rR % 6;
uint R = mod + (mod >= r);
if (rR == 11 && L) // push r1
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/0, /*MWE*/1, /*W16*/1,
/*RI*/0, /*RIWE*/0, /*RL*/6, /*RLOE*/1, /*RR*/1, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // mem[sp + (-2)] = r1
/*RRBUSOE*/1,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/6, /*RIWE*/1, /*RL*/6, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/7,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // sp = sp + (-2)
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else // addm10...11 r, (R+ximm7)
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/5, /*RIWE*/1, /*RL*/R, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2 - (R == 6),
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/r, /*RIWE*/1, /*RL*/r, /*RLOE*/1, /*RR*/5, /*RROE*/1, /*IMM*/0,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
}
/*
110rrr0007777777 incm rrr, (sp+imm7) ; when rrr!=sp,pc
110rrr0017777777 decm rrr, (sp+imm7) ; when rrr!=sp,pc
110rrr0107777777 dincm rrr, (sp+imm7) ; when rrr!=sp,pc
110rrr0117777777 ddecm rrr, (sp+imm7) ; when rrr!=sp,pc
110rrr0007777771 ls5r rrr [, imm6] ; when rrr!=5,sp,pc, odd-valued imm7
110rrr0007777771 last imm6*2 ; when rrr==5, odd-valued imm7
110rrr0017777771 ss5r rrr [, imm6] ; when rrr!=5,sp,pc, odd-valued imm7
110rrr1999999999 lurpc rrr, imm9 ; when rrr!=sp,pc ; rrr = pc + (imm9 << 7)
110rreeeeeeeeeee jal simm11*2 ; when rrr==sp,pc
*/
for (rrr = 0; rrr <= 7; rrr++)
for (RRR = 0; RRR <= 7; RRR++)
for (L = 0; L <= 1; L++)
{
uint idx = idx0_6(/*clk*/0, /*n0_6*/6, /*rrr*/rrr, /*RRR*/RRR, /*L=bit 0*/L);
if (rrr <= 5) // (d)incm/(d)decm/lurpc
{
if (RRR < 4) // (d)incm/(d)decm, ls5r/ss5r, last
{
if (L == 0) // (d)incm/(d)decm
{
int dec = RRR & 1;
int dbl = RRR >> 1;
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/rrr, /*RIWE*/1, /*RL*/6, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/1, // DelayReg = sp + imm7
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // rrr = mem[sp + imm7]
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/1, /*W16*/1,
/*RI*/0, /*RIWE*/0, /*RL*/rrr, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/(dbl ? 7 : 0),
/*OP*/9 - dec, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/1, /*FLAGSOE*/0, /*CNZ*/0, // mem[DelayReg] = rrr +/- (-1)/(-2)
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else // ls5r/ss5r, last
{
if (RRR == 0 && rrr <= 4) // ls5r
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/5, /*RIWE*/1, /*RL*/6, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/0, // r5 = mem[sp & -1]
/*OP*/14, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/rrr, /*RIWE*/1, /*RL*/6, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/7, // rrr = mem[sp - (-2)]
/*OP*/9, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else if (RRR == 0 && rrr == 5) // last
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/6, /*RIWE*/1, /*RL*/6, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/1,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // sp = sp + imm7
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/7, /*RIWE*/1, /*RL*/5, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/0,
/*OP*/14, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // pc = r5 & -1
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
else if (RRR == 1 && rrr <= 4) // ss5r
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/0, /*MWE*/1, /*W16*/1,
/*RI*/0, /*RIWE*/0, /*RL*/6, /*RLOE*/1, /*RR*/5, /*RROE*/0, /*IMM*/0, // mem[sp & -1] = r5
/*OP*/14, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/1,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/1, /*W16*/1,
/*RI*/0, /*RIWE*/0, /*RL*/6, /*RLOE*/1, /*RR*/rrr, /*RROE*/0, /*IMM*/7, // mem[sp - (-2)] = rrr
/*OP*/9, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/1,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
}
else // lurpc
{
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/rrr, /*RIWE*/1, /*RL*/7, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/4,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // rrr = pc + (imm9 << 7)
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
else // jal
{
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/5, /*RIWE*/1, /*RL*/7, /*RLOE*/1, /*RR*/7, /*RROE*/0, /*IMM*/6, // r5 = pc
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // DelayReg = pc + simm11 * 2
/*RRBUSOE*/1,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/7, /*RIWE*/1, /*RL*/0, /*RLOE*/0, /*RR*/0, /*RROE*/0, /*IMM*/0,
/*OP*/14, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // pc = DelayReg & -1
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
/*
1110000007777777 j<cond0:c/lu> simm7*2
1110010007777777 j<cond1:z/e> simm7*2
1110100007777777 j<cond2:s> simm7*2
1110110007777777 j<cond3:leu> simm7*2
1111000007777777 j<cond4:l> simm7*2
1111010007777777 j<cond5:le> simm7*2
1111100007777777 j<cond6:o> simm7*2
1111110007777777 j<cond7:no> simm7*2
1110000017777777 j<cond8:nc/geu> simm7*2
1110010017777777 j<cond9:nz/ne> simm7*2
1110100017777777 j<cond10:ns> simm7*2
1110110017777777 j<cond11:gu> simm7*2
1111000017777777 j<cond12:ge> simm7*2
1111010017777777 j<cond13:g> simm7*2
*/
for (rrr = 0; rrr <= 7; rrr++)
for (RRR = 0; RRR <= 1; RRR++)
for (PPP = 0; PPP <= 7; PPP++)
for (Q = 0; Q <= 1; Q++) // j<cond0...13>
{
uint idx = idx7(/*clk*/0, /*rrr*/rrr, /*m=3 bits*/RRR, /*PPP*/PPP, /*Q=1 bit*/Q);
int cc = RRR * 8 + rrr;
if (cc <= 13)
{
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/7, /*RIWE*/1, /*RL*/7, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/3,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // pc = pc + simm7 * condition_is_true * 2
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
/*
11111r001PPPQIII mrs r, s ; get s-reg-indexed selector to reg r (both reg numbers encoded in 5-bit rPPPQ)
1111110011110III stc
1111110011111III ???
*/
for (rrr = 6; rrr <= 7; rrr++)
for (RRR = 1; RRR == 1; RRR++)
for (PPP = 0; PPP <= 7; PPP++)
for (Q = 0; Q <= 1; Q++) // mrs
{
uint idx = idx7(/*clk*/0, /*rrr*/rrr, /*m=3 bits*/RRR, /*PPP*/PPP, /*Q=1 bit*/Q);
uint rPPPQ = (rrr & 1) * 16 + PPP * 2 + Q;
if (rPPPQ <= 29) // mrs
{
uint r = rPPPQ / 5;
uint mod = rPPPQ % 5;
uint s = mod + (mod >= r);
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/r, /*RIWE*/1, /*RL*/s, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/0,
/*OP*/14, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // r = sel[s & -1]
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/1, /*SELIFLAGSSEL*/1);
}
else if (rPPPQ == 30) // stc
{
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/0, /*RIWE*/0, /*RL*/7, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/0,
/*OP*/9, /*ALUOE*/0, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0, // cmp pc, -1
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
}
/*
111rrr01R7777777 addm14...29 r, (R+ximm7) ; rrrR = 0...15
*/
for (rrr = 0; rrr <= 7; rrr++)
for (RRR = 2; RRR <= 3; RRR++)
for (PPP = 0; PPP <= 7; PPP++)
for (Q = 0; Q <= 1; Q++) // addm14...29 r, (R+ximm7)
{
uint idx = idx7(/*clk*/0, /*rrr*/rrr, /*m=3 bits*/RRR, /*PPP*/PPP, /*Q=1 bit*/Q);
uint rrrR = 14 + rrr * 2 + (RRR & 1);
uint r = rrrR / 6;
uint mod = rrrR % 6;
uint R = mod + (mod >= r);
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/5, /*RIWE*/1, /*RL*/R, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2 - (R == 6),
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/r, /*RIWE*/1, /*RL*/r, /*RLOE*/1, /*RR*/5, /*RROE*/1, /*IMM*/0,
/*OP*/8, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
/*
111rrr1007777777 subm4x r, (R+ximm7) ; when rrr!=sp,pc
*/
for (rrr = 0; rrr <= 5; rrr++)
for (PPP = 0; PPP <= 7; PPP++)
for (Q = 0; Q <= 1; Q++) // subm4x rrr
{
uint idx = idx7(/*clk*/0, /*rrr*/rrr, /*m=3 bits*/4, /*PPP*/PPP, /*Q=1 bit*/Q);
uint r = 4;
uint R = rrr + (rrr >= r);
fill(/*idx*/idx,
/*CRST*/0,
/*MOE*/1, /*MWE*/0, /*W16*/1,
/*RI*/5, /*RIWE*/1, /*RL*/R, /*RLOE*/1, /*RR*/0, /*RROE*/0, /*IMM*/2 - (R == 6),
/*OP*/8, /*ALUOE*/0, /*FLAGSWE*/0, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
fill(/*idx*/idx + (1u << INSTR_BITS),
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,
/*RI*/r, /*RIWE*/1, /*RL*/r, /*RLOE*/1, /*RR*/5, /*RROE*/1, /*IMM*/0,
/*OP*/9, /*ALUOE*/1, /*FLAGSWE*/1, /*IADDRSEL*/0, /*FLAGSOE*/0, /*CNZ*/0,
/*RRBUSOE*/0,
/*IWE*/0, /*SELE*/0, /*SELIFLAGSSEL*/0);
}
/*
111rrr100PPP0III zxt PPP ; when rrr==sp, PPP!=sp,pc ; doesn't modify flags
111rrr100PPP1III sxt PPP ; when rrr==sp, PPP!=sp,pc ; doesn't modify flags
*/
for (rrr = 6; rrr == 6; rrr++)
for (PPP = 0; PPP <= 5; PPP++)
for (Q = 0; Q <= 1; Q++) // zxt/sxt PPP
{
uint idx = idx7(/*clk*/0, /*rrr*/rrr, /*m=3 bits*/4, /*PPP*/PPP, /*Q=1 bit*/Q);
fill(/*idx*/idx,
/*CRST*/1,
/*MOE*/0, /*MWE*/0, /*W16*/0,