mirror of
https://git.sr.ht/~rabbits/uxn
synced 2024-11-22 22:05:11 +00:00
Reorganized operators
This commit is contained in:
neauoire
parent
84efbce058
commit
b6f742cfaa
4 changed files with 92 additions and 173 deletions
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@ -18,14 +18,14 @@ BRK
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@strlen
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,0001 ADD^ PEK
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RTS
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RTU
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@incr
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,iterator LDR
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,01 ADD
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,iterator STR
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,iterator LDR
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RTS
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RTU
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|c000 @FRAME BRK
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|d000 @ERROR BRK
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@ -18,14 +18,14 @@ BRK
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@strlen
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,0001 ADD^ PEK
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RTS
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RTU
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@incr
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,iterator LDR
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,01 ADD
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,iterator STR
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,iterator LDR
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RTS
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RTU
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|c000 @FRAME BRK
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|d000 @ERROR BRK
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92
uxn.c
92
uxn.c
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@ -104,78 +104,75 @@ Uint16 wspeek16(Uint8 o) { return bytes2short(cpu.wst.dat[cpu.wst.ptr - o], cpu.
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Uint16 rspop16(void) { return cpu.rst.dat[--cpu.rst.ptr]; }
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void rspush16(Uint16 a) { cpu.rst.dat[cpu.rst.ptr++] = a; }
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/* new flexy pop/push */
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/* I/O */
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void op_brk() { setflag(FLAG_HALT, 1); }
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void op_rts() { cpu.rom.ptr = rspop16(); }
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void op_lit() { cpu.literal += cpu.rom.dat[cpu.rom.ptr++]; }
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void op_drp() { wspop8(); }
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void op_nop() { }
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void op_ldr() { wspush8(cpu.ram.dat[wspop16()]); }
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void op_str() { cpu.ram.dat[wspop16()] = wspop8(); }
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/* Logic */
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void op_jmu() { cpu.rom.ptr = wspop16(); }
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void op_jmc() { Uint8 a = wspop8(); if(a) op_jmu(); }
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void op_jsu() { rspush16(cpu.rom.ptr); cpu.rom.ptr = wspop16(); }
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void op_jsc() { Uint8 a = wspop8(); if(a) op_jsu(); }
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void op_rtu() { cpu.rom.ptr = rspop16(); }
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void op_rtc() { /* TODO */ }
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/* Stack */
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void op_pop() { wspop8(); }
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void op_dup() { wspush8(wspeek8(1)); }
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void op_swp() { Uint8 b = wspop8(), a = wspop8(); wspush8(b); wspush8(a); }
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void op_ovr() { Uint8 a = wspeek8(2); wspush8(a); }
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void op_rot() { Uint8 c = wspop8(),b = wspop8(),a = wspop8(); wspush8(b); wspush8(c); wspush8(a); }
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void op_jmu() { cpu.rom.ptr = wspop16(); }
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void op_jsu() { rspush16(cpu.rom.ptr); cpu.rom.ptr = wspop16(); }
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void op_jmc() { Uint8 a = wspop8(); if(a) op_jmu(); }
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void op_jsc() { Uint8 a = wspop8(); if(a) op_jsu(); }
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void op_equ() { Uint8 a = wspop8(), b = wspop8(); wspush8(a == b); }
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void op_neq() { Uint8 a = wspop8(), b = wspop8(); wspush8(a != b); }
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void op_gth() { Uint8 a = wspop8(), b = wspop8(); wspush8(a < b); }
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void op_lth() { Uint8 a = wspop8(), b = wspop8(); wspush8(a > b); }
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void op_and() { Uint8 a = wspop8(), b = wspop8(); wspush8(a & b); }
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void op_ora() { Uint8 a = wspop8(), b = wspop8(); wspush8(a | b); }
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void op_rol() { Uint8 a = wspop8(), b = wspop8(); wspush8(a << b); }
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void op_ror() { Uint8 a = wspop8(), b = wspop8(); wspush8(a >> b); }
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/* Arithmetic */
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void op_add() { Uint8 a = wspop8(), b = wspop8(); wspush8(a + b); }
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void op_sub() { Uint8 a = wspop8(), b = wspop8(); wspush8(a - b); }
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void op_mul() { Uint8 a = wspop8(), b = wspop8(); wspush8(a * b); }
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void op_div() { Uint8 a = wspop8(), b = wspop8(); wspush8(a / b); }
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void op_ldr() { wspush8(cpu.ram.dat[wspop16()]); }
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void op_str() { cpu.ram.dat[wspop16()] = wspop8(); }
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void op_pek() { wspush8(cpu.rom.dat[wspop16()]); }
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void op_pok() { printf("TODO:\n");}
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void op_drp16() { wspop16(); }
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void op_equ() { Uint8 a = wspop8(), b = wspop8(); wspush8(a == b); }
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void op_neq() { Uint8 a = wspop8(), b = wspop8(); wspush8(a != b); }
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void op_gth() { Uint8 a = wspop8(), b = wspop8(); wspush8(a < b); }
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void op_lth() { Uint8 a = wspop8(), b = wspop8(); wspush8(a > b); }
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/* Stack(16-bits) */
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void op_pop16() { wspop16(); }
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void op_dup16() { wspush16(wspeek16(2)); }
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void op_swp16() { Uint16 b = wspop16(), a = wspop16(); wspush16(b); wspush16(a); }
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void op_ovr16() { Uint16 a = wspeek16(4); wspush16(a); }
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void op_rot16() { Uint16 c = wspop16(), b = wspop16(), a = wspop16(); wspush16(b); wspush16(c); wspush16(a); }
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void op_equ16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a == b); }
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void op_neq16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a != b); }
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void op_gth16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a < b); }
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void op_lth16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a > b); }
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void op_and16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a & b); }
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void op_ora16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a | b); }
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void op_rol16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a << b); }
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void op_ror16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a >> b); }
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/* Arithmetic(16-bits) */
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void op_add16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a + b); }
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void op_sub16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a - b); }
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void op_mul16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a * b); }
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void op_div16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a / b); }
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void op_equ16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a == b); }
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void op_neq16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a != b); }
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void op_gth16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a < b); }
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void op_lth16() { Uint16 a = wspop16(), b = wspop16(); wspush16(a > b); }
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/* remove */
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void op_pek() { wspush8(cpu.rom.dat[wspop16()]); }
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void op_pok() { printf("TODO:\n");}
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void (*ops8[])() = {
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op_brk, op_rts, op_lit, op_drp, op_dup, op_swp, op_ovr, op_rot,
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op_jmu, op_jsu, op_jmc, op_jsc, op_equ, op_neq, op_gth, op_lth,
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op_and, op_ora, op_rol, op_ror, op_add, op_sub, op_mul, op_div,
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op_ldr, op_str, op_pek, op_pok, op_brk, op_brk, op_brk, op_brk
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};
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void (*ops16[])() = {
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op_brk, op_rts, op_lit, op_drp16, op_dup16, op_swp16, op_ovr16, op_rot16,
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op_jmu, op_jsu, op_jmc, op_jsc, op_equ, op_neq, op_gth, op_lth,
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op_and16, op_ora16, op_rol16, op_ror16, op_add16, op_sub16, op_mul16, op_div16,
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op_ldr, op_str, op_pek, op_pok, op_brk, op_brk, op_brk, op_brk
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void (*ops[])() = {
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op_brk, op_lit, op_nop, op_nop, op_pek, op_pok, op_ldr, op_str,
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op_jmu, op_jmc, op_jsu, op_jsc, op_rtu, op_rtc, op_nop, op_nop,
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op_pop, op_dup, op_swp, op_ovr, op_rot, op_and, op_ora, op_rol,
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op_add, op_sub, op_mul, op_div, op_equ, op_neq, op_gth, op_lth,
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op_pop16, op_dup16, op_swp16, op_ovr16, op_rot16, op_and16, op_ora16, op_rol16,
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op_add16, op_sub16, op_mul16, op_div16, op_equ16, op_neq16, op_gth16, op_lth16
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};
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Uint8 opr[][2] = { /* todo: 16 bits mode */
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{0,0}, {0,0}, {0,0}, {1,0}, {0,1}, {1,1}, {0,1}, {3,3},
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{2,0}, {2,0}, {2,0}, {2,0}, {2,1}, {2,1}, {2,1}, {2,1},
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{1,0}, {1,0}, {1,0}, {1,0}, {2,1}, {0,0}, {0,0}, {0,0},
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{2,1}, {3,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}
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{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
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{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
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{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
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{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
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{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0},
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{0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}, {0,0}
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};
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/* clang-format on */
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@ -231,14 +228,11 @@ eval(void)
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setflag(FLAG_SIGN, (instr >> 6) & 1);
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if((instr >> 7) & 1)
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printf("Unused flag: %02x\n", instr);
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/* TODO: setflag(FLAG_B, (instr >> 6) & 1); */
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/* TODO: setflag(FLAG_C, (instr >> 7) & 1); */
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if(cpu.wst.ptr < opr[op][0])
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return error("Stack underflow", op);
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if(getflag(FLAG_SHORT))
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(*ops16[op])();
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else
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(*ops8[op])();
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op += 16;
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(*ops[op])();
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cpu.counter++;
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return 1;
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}
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165
uxnasm.c
165
uxnasm.c
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@ -26,98 +26,27 @@ typedef struct {
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int labelslen;
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Label labels[256];
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Program p;
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/* clang-format off */
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char ops[][4] = {
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"BRK", "RTS", "LIT", "POP", "DUP", "SWP", "OVR", "ROT",
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"JMU", "JSU", "JMC", "JSC", "EQU", "NEQ", "GTH", "LTH",
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"AND", "ORA", "ROL", "ROR", "ADD", "SUB", "MUL", "DIV",
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"LDR", "STR", "PEK", "POK", "---", "---", "---", "---"
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"BRK", "LIT", "---", "---", "PEK", "POK", "LDR", "STR",
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"JMU", "JMC", "JSU", "JSC", "RTU", "RTC", "---", "---",
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"POP", "DUP", "SWP", "OVR", "ROT", "AND", "ORA", "ROL",
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"ADD", "SUB", "MUL", "DIV", "EQU", "NEQ", "GTH", "LTH"
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};
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/* clang-format on */
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Program p;
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int scmp(char *a, char *b) { int i = 0; while(a[i] == b[i]) if(!a[i++]) return 1; return 0; } /* string compare */
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int slen(char *s) { int i = 0; while(s[i] && s[++i]) ; return i; } /* string length */
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int sihx(char *s) { int i = 0; char c; while((c = s[i++])) if(!(c >= '0' && c <= '9') && !(c >= 'a' && c <= 'f') && !(c >= 'A' && c <= 'F')) return 0; return 1; } /* string is hexadecimal */
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int shex(char *s) { int n = 0, i = 0; char c; while((c = s[i++])) if(c >= '0' && c <= '9') n = n * 16 + (c - '0'); else if(c >= 'A' && c <= 'F') n = n * 16 + 10 + (c - 'A'); else if(c >= 'a' && c <= 'f') n = n * 16 + 10 + (c - 'a'); return n; } /* string to num */
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int cmnt(char *w, int *skip) { if(w[0] == ')') { *skip = 0; return 1; } if(w[0] == '(') *skip = 1; if(*skip) return 1; return 0; } /* comment helper */
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char *scpy(char *src, char *dst, int len) { int i = 0; while((dst[i] = src[i]) && i < len - 2) i++; dst[i + 1] = '\0'; return dst; } /* string copy */
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#pragma mark - Helpers
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int
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scmp(char *a, char *b) /* string compare */
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{
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int i = 0;
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while(a[i] == b[i])
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if(!a[i++])
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return 1;
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return 0;
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}
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char *
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scpy(char *src, char *dst, int len) /* string copy */
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{
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int i = 0;
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while((dst[i] = src[i]) && i < len - 2)
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i++;
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dst[i + 1] = '\0';
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return dst;
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}
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int
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slen(char *s) /* string length */
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{
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int i = 0;
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while(s[i] && s[++i])
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;
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return i;
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}
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char *
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suca(char *s) /* string to uppercase */
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{
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int i = 0;
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char c;
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while((c = s[i]))
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s[i++] = c >= 'a' && c <= 'z' ? c - ('a' - 'A') : c;
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return s;
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}
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int
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sihx(char *s) /* string is hexadecimal */
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{
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int i = 0;
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char c;
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while((c = s[i++]))
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if(!(c >= '0' && c <= '9') && !(c >= 'a' && c <= 'f') && !(c >= 'A' && c <= 'F'))
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return 0;
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return 1;
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}
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int
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shex(char *s) /* string to num */
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{
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int n = 0, i = 0;
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char c;
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while((c = s[i++]))
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if(c >= '0' && c <= '9')
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n = n * 16 + (c - '0');
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else if(c >= 'A' && c <= 'F')
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n = n * 16 + 10 + (c - 'A');
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else if(c >= 'a' && c <= 'f')
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n = n * 16 + 10 + (c - 'a');
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return n;
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}
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int
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iscomment(char *w, int *skip)
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{
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if(w[0] == ')') {
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*skip = 0;
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return 1;
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}
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if(w[0] == '(') *skip = 1;
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if(*skip) return 1;
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return 0;
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}
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/* clang-format on */
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#pragma mark - I/O
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@ -125,7 +54,7 @@ void
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pushbyte(Uint8 b, int lit)
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{
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if(lit) {
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pushbyte(0x02, 0);
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pushbyte(0x01, 0);
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pushbyte(0x01, 0);
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}
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p.data[p.ptr++] = b;
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@ -135,7 +64,7 @@ void
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pushshort(Uint16 s, int lit)
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{
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if(lit) {
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pushbyte(0x02, 0);
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pushbyte(0x01, 0);
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pushbyte(0x02, 0);
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}
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pushbyte((s >> 8) & 0xff, 0);
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@ -143,10 +72,10 @@ pushshort(Uint16 s, int lit)
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}
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void
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pushword(char *w)
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pushtext(char *w)
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{
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int i = slen(w);
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pushbyte(0x02, 0);
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pushbyte(0x01, 0);
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pushbyte(slen(w), 0);
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while(i > 0)
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pushbyte(w[--i], 0);
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@ -163,19 +92,18 @@ findlabel(char *s)
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}
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Uint8
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findop(char *s)
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findoperator(char *s)
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{
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int i;
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for(i = 0; i < 32; ++i) {
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for(i = 0; i < 0x20; ++i) {
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int m = 0;
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if(ops[i][0] != s[0]) continue;
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if(ops[i][1] != s[1]) continue;
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if(ops[i][2] != s[2]) continue;
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char *o = ops[i];
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if(o[0] != s[0] || o[1] != s[1] || o[2] != s[2])
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continue;
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while(s[3 + m]) {
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char c = s[3 + m];
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if(c == '^') i |= (1 << 5); /* mode: 16 bits */
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if(c == '~') i |= (1 << 6); /* mode: signed */
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if(c == '&') i |= (1 << 7); /* mode: unused */
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if(s[3 + m] == '^') i |= (1 << 5); /* mode: 16 bits */
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if(s[3 + m] == '~') i |= (1 << 6); /* mode: signed */
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if(s[3 + m] == '&') i |= (1 << 7); /* mode: unused */
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m++;
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}
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return i;
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@ -193,14 +121,14 @@ error(char *name, char *id)
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}
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int
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makelabel(char *id, Uint16 addr)
|
||||
makelabel(char *name, Uint16 addr)
|
||||
{
|
||||
Label *l;
|
||||
if(findlabel(id))
|
||||
return error("Label duplicate", id);
|
||||
if(findlabel(name))
|
||||
return error("Label duplicate", name);
|
||||
l = &labels[labelslen++];
|
||||
scpy(id, l->name, 64);
|
||||
l->addr = addr;
|
||||
scpy(name, l->name, 64);
|
||||
printf("New label: %s[0x%02x]\n", l->name, l->addr);
|
||||
return 1;
|
||||
}
|
||||
|
|
@ -220,7 +148,8 @@ pass1(FILE *f)
|
|||
Uint16 addr = 0;
|
||||
char w[64];
|
||||
while(fscanf(f, "%s", w) == 1) {
|
||||
if(iscomment(w, &skip)) continue;
|
||||
if(cmnt(w, &skip))
|
||||
continue;
|
||||
if(w[0] == '@' && !makelabel(w + 1, addr))
|
||||
return error("Pass1 failed", w);
|
||||
if(w[0] == ';' && !makelabel(w + 1, vars++))
|
||||
|
|
@ -231,23 +160,19 @@ pass1(FILE *f)
|
|||
else
|
||||
continue;
|
||||
}
|
||||
/* move addr ptr */
|
||||
if(findop(w) || scmp(w, "BRK"))
|
||||
if(findoperator(w) || scmp(w, "BRK"))
|
||||
addr += 1;
|
||||
else if(w[0] == '|')
|
||||
addr = shex(w + 1);
|
||||
else if(w[0] == '@')
|
||||
addr += 0;
|
||||
else if(w[0] == ';')
|
||||
addr += 0;
|
||||
else if(w[0] == '.')
|
||||
addr += 2;
|
||||
else if(w[0] == '"')
|
||||
addr += slen(w + 1) + 2;
|
||||
else if(w[0] == ',')
|
||||
addr += 2 + (sihx(w + 1) && slen(w + 1) == 2 ? 1 : 2);
|
||||
else
|
||||
return error("Unknown label", w);
|
||||
else {
|
||||
switch(w[0]) {
|
||||
case '|': addr = shex(w + 1); break;
|
||||
case '@':
|
||||
case ';': break;
|
||||
case '.': addr += 2; break;
|
||||
case '"': addr += slen(w + 1) + 2; break;
|
||||
case ',': addr += 2 + (sihx(w + 1) && slen(w + 1) == 2 ? 1 : 2); break;
|
||||
default: return error("Unknown label", w);
|
||||
}
|
||||
}
|
||||
}
|
||||
rewind(f);
|
||||
return 1;
|
||||
|
|
@ -263,16 +188,16 @@ pass2(FILE *f)
|
|||
Label *l;
|
||||
if(w[0] == '@') continue;
|
||||
if(w[0] == ';') continue;
|
||||
if(iscomment(w, &skip)) continue;
|
||||
if(cmnt(w, &skip)) continue;
|
||||
if(w[0] == '|')
|
||||
p.ptr = shex(w + 1);
|
||||
else if(w[0] == ':')
|
||||
fscanf(f, "%s", w);
|
||||
else if(w[0] == '"')
|
||||
pushword(w + 1);
|
||||
pushtext(w + 1);
|
||||
else if((l = findlabel(w + 1)))
|
||||
pushshort(l->addr, w[0] == ',');
|
||||
else if((op = findop(w)) || scmp(w, "BRK"))
|
||||
else if((op = findoperator(w)) || scmp(w, "BRK"))
|
||||
pushbyte(op, 0);
|
||||
else if(sihx(w + 1) && slen(w + 1) == 2)
|
||||
pushbyte(shex(w + 1), w[0] == ',');
|
||||
|
|
|
|||
Loading…
Reference in a new issue