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Added find_index array function #9

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ShatteredMINT merged 17 commits from Micha_i/symphony_stdlib:array-functions into main 2026-09-03 20:30:10 +02:00
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1 changed files with 3 additions and 5 deletions
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array.asm
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@@ -13,7 +13,6 @@ pub find_index:
push r10 ; We will store the stride here push r10 ; We will store the stride here
push r9 ; We will store the final address here push r9 ; We will store the final address here
push r8 ; We will store the mask here push r8 ; We will store the mask here
push r1 ; We need the array pointer to calculate the item index
mov r12, r4 mov r12, r4
mov r11, r1 mov r11, r1
@@ -24,6 +23,7 @@ pub find_index:
add r9, r9, r1 ; We add the start address to get the final address add r9, r9, r1 ; We add the start address to get the final address
push r13 ; We save up the return address because we will provide our own to the predicate push r13 ; We save up the return address because we will provide our own to the predicate
push r1 ; We need the array pointer to calculate the item index
counter r13 counter r13
add r13, r13, 52 ; Point to just after the predicate call - we can set this up now so we don't waste loop cycles add r13, r13, 52 ; Point to just after the predicate call - we can set this up now so we don't waste loop cycles
@@ -47,14 +47,12 @@ pub find_index:
; If we didn't, move to next item ; If we didn't, move to next item
add r11, r11, r10 ; We add the stride to the pointer add r11, r11, r10 ; We add the stride to the pointer
cmp r11, r9 ; We compare with the final address cmp r11, r9 ; We compare with the final address
je find_index_not_found ; If we reached the end we're done jne find_index_loop ; If we did not reach the end we jump back into the loop
jmp find_index_loop
find_index_not_found: find_index_not_found:
add sp, sp, 4 ; The predicate context is not useful add sp, sp, 8 ; The predicate context and old array pointer are not useful
pop r13 ; We get our return address pop r13 ; We get our return address
nand r1, zr, zr ; We put -1 in r1 nand r1, zr, zr ; We put -1 in r1
add sp, sp, 4 ; The old array pointer are not useful
jmp find_index_postamble jmp find_index_postamble
find_index_found_item: find_index_found_item: