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specified Carry-out for __*shift_1 routines and Sign-out for __llshl_1 #763

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Merged
ZERICO2005 merged 1 commit into from
Mar 28, 2026
Merged

specified Carry-out for __*shift_1 routines and Sign-out for __llshl_1 #763

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6 changes: 6 additions & 0 deletions src/crt/i48shrs_1.src
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Expand Up @@ -5,6 +5,12 @@
.type __i48shrs_1, @function

__i48shrs_1:
; Input:
; - UDE:UHL
; Output:
; - UDE:UHL >>= 1 (signed)
; - Carry = shifted-out bit
; Cost: 24 bytes | 25F + 11R + 8W + 3
push hl
scf
sbc hl, hl
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6 changes: 6 additions & 0 deletions src/crt/i48shru_1.src
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,12 @@
.type __i48shru_1, @function

__i48shru_1:
; Input:
; - UDE:UHL
; Output:
; - UDE:UHL >>= 1 (unsigned)
; - Carry = shifted-out bit
; Cost: 24 bytes | 25F + 11R + 8W + 3
push hl
scf
sbc hl, hl
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6 changes: 6 additions & 0 deletions src/crt/ishrs_1.src
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,12 @@
.type __ishrs_1, @function

__ishrs_1:
; Input:
; - UHL
; Output:
; - UHL >>= 1 (signed)
; - Carry = shifted-out bit
; Cost: 14 bytes | 15F + 7R + 4W + 2
push hl
ld hl, 2
add hl, sp
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6 changes: 6 additions & 0 deletions src/crt/ishru_1.src
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,12 @@
.type __ishru_1, @function

__ishru_1:
; Input:
; - UHL
; Output:
; - UHL >>= 1 (unsigned)
; - Carry = shifted-out bit
; Cost: 14 bytes | 15F + 7R + 4W + 2
push hl
ld hl, 2
add hl, sp
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6 changes: 6 additions & 0 deletions src/crt/llshl_1.src
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Expand Up @@ -5,6 +5,12 @@
.type __llshl_1, @function

__llshl_1:
; Input:
; - BC:UDE:UHL
; Output:
; - BC:UDE:UHL <<= 1
; - Carry = shifted-out bit
; Cost: 10 bytes | 11F + 3R + 1
add hl, hl
ex de, hl
adc hl, hl
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6 changes: 6 additions & 0 deletions src/crt/llshrs_1.src
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,12 @@
.type __llshrs_1, @function

__llshrs_1:
; Input:
; - BC:UDE:UHL
; Output:
; - BC:UDE:UHL >>= 1 (signed)
; - Carry = shifted-out bit
; Cost: 28 bytes | 29F + 11R + 8W + 3
push hl
scf
sbc hl, hl
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6 changes: 6 additions & 0 deletions src/crt/llshru_1.src
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,12 @@
.type __llshru_1, @function

__llshru_1:
; Input:
; - BC:UDE:UHL
; Output:
; - BC:UDE:UHL >>= 1 (unsigned)
; - Carry = shifted-out bit
; Cost: 28 bytes | 29F + 11R + 8W + 3
push hl
scf
sbc hl, hl
Expand Down
6 changes: 6 additions & 0 deletions src/crt/lshrs_1.src
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Expand Up @@ -5,6 +5,12 @@
.type __lshrs_1, @function

__lshrs_1:
; Input:
; - E:UHL
; Output:
; - E:UHL >>= 1 (signed)
; - Carry = shifted-out bit
; Cost: 16 bytes | 17F + 7R + 4W + 2
push hl
ld hl, 2
add hl, sp
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6 changes: 6 additions & 0 deletions src/crt/lshru_1.src
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,12 @@
.type __lshru_1, @function

__lshru_1:
; Input:
; - E:UHL
; Output:
; - E:UHL >>= 1 (unsigned)
; - Carry = shifted-out bit
; Cost: 16 bytes | 17F + 7R + 4W + 2
push hl
ld hl, 2
add hl, sp
Expand Down
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