diff options
Diffstat (limited to 'svp.cpu')
| -rw-r--r-- | svp.cpu | 142 |
1 files changed, 120 insertions, 22 deletions
@@ -213,7 +213,7 @@ PPP0000000000101 alu_stack local tmp 32 meta dst tmp svp_pop - meta name "st" + meta name "stack" svp_alu_op P tmp PPP0000000000111 alu_p @@ -231,7 +231,7 @@ PPP0000000001RRR alu_ext meta name val svp_alu_op P tmp -PPP0001B000MMRR alu_ram +PPP0001B0000MMRR alu_ram invalid P 0 invalid P 2 svp_ram_read M B R @@ -266,6 +266,42 @@ PPP0001B000MMRR alu_ram update_flags ZN +PPP0101B0000MMRR alu_ram_indirect + invalid P 0 + invalid P 2 + svp_ram_read M B R + svp_prog_ram_read scratch1 + local tmp 32 + lsl val 16 tmp + + switch P + case 1 + dis "sub ((%s%s))" reg modestr + sub tmp a a + + case 3 + dis "cmp ((%s%s))" reg modestr + cmp tmp a + + case 4 + dis "add ((%s%s))" reg modestr + add tmp a a + + case 5 + dis "and ((%s%s))" reg modestr + and tmp a a + + case 6 + dis "or ((%s%s))" reg modestr + or tmp a a + + case 7 + dis "eor ((%s%s))" reg modestr + xor tmp a a + end + + update_flags ZN + PPP0000000001111 alu_al invalid P 0 invalid P 2 @@ -275,6 +311,22 @@ PPP0000000001111 alu_al meta name al svp_alu_op P tmp +PPP0011JAAAAAAAA alu_ram_direct + invalid P 0 + invalid P 2 + if J + meta src ram1.A + else + meta src ram0.A + end + svp_alu_op P src + +PPP0010000000000 alu_immed + invalid P 0 + invalid P 2 + svp_op_fetch + svp_alu_op P scratch1 + 1001000FCCCC0OOO cond_mod svp_check_cond F C if istrue @@ -302,13 +354,13 @@ PPP0000000001111 alu_al dis "ld %s, %s" internal.D internal.S mov internal.S internal.D -000000000DDD0101 ld_int_st - dis "ld %s, st" internal.D +000000000DDD0101 ld_int_stack + dis "ld %s, stack" internal.D meta dst internal.D svp_pop -0000000000110101 ld_a_st - dis "ld a, st" +0000000000110101 ld_a_stack + dis "ld a, stack" local tmp 32 meta dst tmp svp_pop @@ -316,8 +368,8 @@ PPP0000000001111 alu_al and 0xFFFF a a or tmp a a -0000000001110101 ld_p_st - dis "ld p, st" +0000000001110101 ld_p_stack + dis "ld p, stack" local tmp 32 meta dst tmp svp_pop @@ -325,18 +377,18 @@ PPP0000000001111 alu_al and 0xFFFF p p or tmp p p -0000000001010SSS ld_st_int - dis "ld st, %s" internal.S +0000000001010SSS ld_stack_int + dis "ld stack, %s" internal.S svp_push internal.S -0000000001010011 ld_st_a - dis "ld st, a" +0000000001010011 ld_stack_a + dis "ld stack, a" local tmp 32 lsr a 16 tmp svp_push tmp -0000000001010111 ld_st_p - dis "ld st, p" +0000000001010111 ld_stack_p + dis "ld stack, p" local tmp 32 lsr p 16 tmp svp_push tmp @@ -494,11 +546,54 @@ PPP0000000001111 alu_al and 0xFFFF p p or tmp p p -0000001B0101MMPP ld_st_ram +0000001B0101MMPP ld_stack_ram svp_ram_read M B P - dis "ld st, (%s%s)" reg modestr + dis "ld stack, (%s%s)" reg modestr svp_push val +000010000DDD0000 ld_int_immed + svp_op_fetch + dis "ld %s, %X" internal.D scratch1 + mov scratch1 internal.D + +0000100000000000 ld_n1_immed + svp_op_fetch + dis "ld -, %X" scratch1 + +0000100000110000 ld_a_immed + local tmp 32 + svp_op_fetch + dis "ld a, %X" scratch1 + lsl 16 scratch1 tmp + and 0xFFFF a a + or tmp a a + +0000100001010000 ld_stack_immed + svp_op_fetch + dis "ld stack, %X" scratch1 + svp_push scratch1 + +0000100001110000 ld_p_immed + local tmp 32 + svp_op_fetch + dis "ld p, %X" scratch1 + lsl 16 scratch1 tmp + and 0xFFFF p p + or tmp p p + +000010001DDD0000 ld_ext_immed + svp_op_fetch + dis "ld %s, %X", external.D, scratch1 + meta src scratch1 + svp_write_ext D + switch D + case 7 + dis "ld al, %X" scratch1 + + default + dis "ld %s, %X" external.D scratch1 + end + 0100100FCCCC0000 call_cond svp_check_cond F C svp_op_fetch @@ -514,19 +609,22 @@ PPP0000000001111 alu_al if istrue mov scratch1 pc end - -svp_op_fetch + +svp_prog_ram_read + arg src 16 cycles 1 - cmp 1024 pc + cmp 1024 src if >=U - mov pc scratch1 - add scratch1 scratch1 scratch1 + add src src scratch1 ocall read_16 else - mov iram.pc scratch1 + mov iram.src scratch1 end + +svp_op_fetch + svp_prog_ram_read pc add 1 pc pc svp_run_op |