Fix V8 emulator bugs

programs/parva/pythagorean_triples_1.lbpasm

@@ -1,105 +0,0 @@
-; calculate all primitive pythogorean triples (a^2 + b^2 = c^2) where c <= 32
-
-nop
-b _start
-
-results:
-.repeat 0 15
-
-table:
-.repeat 0 33
-
-result_index:
-.data 0
-
-_start:
-
-li x7, 32 ; limit
-li x0, 1 ; prime
-li x2, 1 ; prime factor bit
-slli x2, x2, 23
-
-loop_prime:
-
-addi x0, x0, 1
-bgt x0, x7, squares
-lw x4, table(x0)
-srli x4, x4, 12
-bnez x4, loop_prime
-mv x3, x0 ; multiple
-
-loop_index:
-
-lw x4, table(x3) ; x4 = current prime factor bits
-or x4, x4, x2 ; x4 |= add current prime factor bit
-sw x4, table(x3)
-add x3, x3, x0
-ble x3, x7, loop_index
-srli x2, x2, 1 ; update prime bit
-b loop_prime
-
-squares:
-
-li x0, 0 ; n
-li x1, 0 ; n^2
-
-loop_squares:
-
-lw x4, table(x0) ; 70
-or x4, x4, x1
-sw x4, table(x0)
-add x1, x1, x0
-add x1, x1, x0
-addi x1, x1, 1
-addi x0, x0, 1
-ble x0, x7, loop_squares
-
-li x0, 1 ; a = 1
-
-iterate_a:
-
-addi x0, x0, 1 ; 79
-bgt x0, x7, end
-lw x2, table(x0) ; a^2 (with prime bits)
-mv x6, x0 ; b = a
-
-iterate_b:
-
-addi x6, x6, 1 ; 83
-bgt x6, x7, iterate_a
-lw x3, table(x6) ; b^2 (with prime bits)
-and x4, x2, x3 ; check if a and b are coprime
-srli x4, x4, 12
-bnez x4, iterate_b ; 87
-add x3, x2, x3
-andi x3, x3, 0o77 ; a^2 + b^2
-mv x5, x6 ; x5 = c = b
-
-; x0 = a, x1 = sp, x2 = a^2, x3 = a^2+b^2, x4 = (unused)
-; x5 = c, x6 = b, x7 = limit
-
-iterate_c:
-
-addi x5, x5, 1 ; c++ ; 92
-bgt x5, x7, iterate_b
-lw x4, table(x5) ; x4 = c^2|cp
-andi x4, x4, 0o77 ; x4 = c^2
-bgt x4, x3, iterate_b
-bne x5, x3, iterate_c
-
-; found triple
-
-; x0 = a, x6 = b, x5 = c
-
-lw x4, result_index
-sw x0, 0(x4)
-sw x6, 1(x4)
-sw x5, 2(x4)
-addi x4, x4, 3
-sw x4, result_index
-
-b iterate_a
-
-end:
-
-wfi