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amiga_ppc_c2p.s
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2000-05-22
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9KB
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307 lines
.extern ppc_c2p_line
# convert chunky line to planar
# r3 = line #
# r4 = src ptr
# r5 = dest bitmap
# r6 = (SCREENWIDTH+31)>>5 (# cells to convert per line per plane)
.align 4
ppc_c2p_line: addi r1,r1,-36
stswi r13,r1,0 # save registers
stw r21,32(r1)
mtctr r6 # ctr = number of loops
lhz r6,0(r5) # bm_BytesPerRow
mullw r3,r3,r6 # offset in BitPlane of line
addi r5,r5,12 # bm_Planes[1]
lswi r6,r5,28 # BP2-8
lwz r5,-4(r5) # BP1
c2p_loop: lswi r13,r4,0 # next 8 longs
rlwimi r0,r13,0,0,0 # A7
rlwimi r0,r13,7,1,1 # B7
rlwimi r0,r13,14,2,2 # C7
rlwimi r0,r13,21,3,3 # D7
rlwimi r0,r14,28,4,4 # E7
rlwimi r0,r14,3,5,5 # F7
rlwimi r0,r14,10,6,6 # G7
rlwimi r0,r14,17,7,7 # H7
rlwimi r0,r15,24,8,8 # I7
rlwimi r0,r15,31,9,9 # J7
rlwimi r0,r15,6,10,10 # K7
rlwimi r0,r15,13,11,11 # L7
rlwimi r0,r16,20,12,12 # M7
rlwimi r0,r16,27,13,13 # N7
rlwimi r0,r16,2,14,14 # O7
rlwimi r0,r16,9,15,15 # P7
rlwimi r0,r17,16,16,16 # Q7
rlwimi r0,r17,23,17,17 # R7
rlwimi r0,r17,30,18,18 # S7
rlwimi r0,r17,5,19,19 # T7
rlwimi r0,r18,12,20,20 # U7
rlwimi r0,r18,19,21,21 # V7
rlwimi r0,r18,26,22,22 # W7
rlwimi r0,r18,1,23,23 # X7
rlwimi r0,r19,8,24,24 # Y7
rlwimi r0,r19,15,25,25 # Z7
rlwimi r0,r19,22,26,26 # a7
rlwimi r0,r19,29,27,27 # b7
rlwimi r0,r20,4,28,28 # c7
rlwimi r0,r20,11,29,29 # d7
rlwimi r0,r20,18,30,30 # e7
rlwimi r0,r20,25,31,31 # f7
stwx r0,r12,r3 # store to BP8+offset
rlwimi r21,r13,1,0,0 # A6
rlwimi r21,r13,8,1,1 # B6
rlwimi r21,r13,15,2,2 # C6
rlwimi r21,r13,22,3,3 # D6
rlwimi r21,r14,29,4,4 # E6
rlwimi r21,r14,4,5,5 # F6
rlwimi r21,r14,11,6,6 # G6
rlwimi r21,r14,18,7,7 # H6
rlwimi r21,r15,25,8,8 # I6
rlwimi r21,r15,0,9,9 # J6
rlwimi r21,r15,7,10,10 # K6
rlwimi r21,r15,14,11,11 # L6
rlwimi r21,r16,21,12,12 # M6
rlwimi r21,r16,28,13,13 # N6
rlwimi r21,r16,3,14,14 # O6
rlwimi r21,r16,10,15,15 # P6
rlwimi r21,r17,17,16,16 # Q6
rlwimi r21,r17,24,17,17 # R6
rlwimi r21,r17,31,18,18 # S6
rlwimi r21,r17,6,19,19 # T6
rlwimi r21,r18,13,20,20 # U6
rlwimi r21,r18,20,21,21 # V6
rlwimi r21,r18,27,22,22 # W6
rlwimi r21,r18,2,23,23 # X6
rlwimi r21,r19,9,24,24 # Y6
rlwimi r21,r19,16,25,25 # Z6
rlwimi r21,r19,23,26,26 # a6
rlwimi r21,r19,30,27,27 # b6
rlwimi r21,r20,5,28,28 # c6
rlwimi r21,r20,12,29,29 # d6
rlwimi r21,r20,19,30,30 # e6
rlwimi r21,r20,26,31,31 # f6
stwx r21,r11,r3 # store to BP7+offset
rlwimi r0,r13,2,0,0 # A5
rlwimi r0,r13,9,1,1 # B5
rlwimi r0,r13,16,2,2 # C5
rlwimi r0,r13,23,3,3 # D5
rlwimi r0,r14,30,4,4 # E5
rlwimi r0,r14,5,5,5 # F5
rlwimi r0,r14,12,6,6 # G5
rlwimi r0,r14,19,7,7 # H5
rlwimi r0,r15,26,8,8 # I5
rlwimi r0,r15,1,9,9 # J5
rlwimi r0,r15,8,10,10 # K5
rlwimi r0,r15,15,11,11 # L5
rlwimi r0,r16,22,12,12 # M5
rlwimi r0,r16,29,13,13 # N5
rlwimi r0,r16,4,14,14 # O5
rlwimi r0,r16,11,15,15 # P5
rlwimi r0,r17,18,16,16 # Q5
rlwimi r0,r17,25,17,17 # R5
rlwimi r0,r17,0,18,18 # S5
rlwimi r0,r17,7,19,19 # T5
rlwimi r0,r18,14,20,20 # U5
rlwimi r0,r18,21,21,21 # V5
rlwimi r0,r18,28,22,22 # W5
rlwimi r0,r18,3,23,23 # X5
rlwimi r0,r19,10,24,24 # Y5
rlwimi r0,r19,17,25,25 # Z5
rlwimi r0,r19,24,26,26 # a5
rlwimi r0,r19,31,27,27 # b5
rlwimi r0,r20,6,28,28 # c5
rlwimi r0,r20,13,29,29 # d5
rlwimi r0,r20,20,30,30 # e5
rlwimi r0,r20,27,31,31 # f5
stwx r0,r10,r3 # store to BP6+offset
rlwimi r21,r13,3,0,0 # A4
rlwimi r21,r13,10,1,1 # B4
rlwimi r21,r13,17,2,2 # C4
rlwimi r21,r13,24,3,3 # D4
rlwimi r21,r14,31,4,4 # E4
rlwimi r21,r14,6,5,5 # F4
rlwimi r21,r14,13,6,6 # G4
rlwimi r21,r14,20,7,7 # H4
rlwimi r21,r15,27,8,8 # I4
rlwimi r21,r15,2,9,9 # J4
rlwimi r21,r15,9,10,10 # K4
rlwimi r21,r15,16,11,11 # L4
rlwimi r21,r16,23,12,12 # M4
rlwimi r21,r16,30,13,13 # N4
rlwimi r21,r16,5,14,14 # O4
rlwimi r21,r16,12,15,15 # P4
rlwimi r21,r17,19,16,16 # Q4
rlwimi r21,r17,26,17,17 # R4
rlwimi r21,r17,1,18,18 # S4
rlwimi r21,r17,8,19,19 # T4
rlwimi r21,r18,15,20,20 # U4
rlwimi r21,r18,22,21,21 # V4
rlwimi r21,r18,29,22,22 # W4
rlwimi r21,r18,4,23,23 # X4
rlwimi r21,r19,11,24,24 # Y4
rlwimi r21,r19,18,25,25 # Z4
rlwimi r21,r19,25,26,26 # a4
rlwimi r21,r19,0,27,27 # b4
rlwimi r21,r20,7,28,28 # c4
rlwimi r21,r20,14,29,29 # d4
rlwimi r21,r20,21,30,30 # e4
rlwimi r21,r20,28,31,31 # f4
stwx r21,r9,r3 # store to BP5+offset
rlwimi r0,r13,4,0,0 # A3
rlwimi r0,r13,11,1,1 # B3
rlwimi r0,r13,18,2,2 # C3
rlwimi r0,r13,25,3,3 # D3
rlwimi r0,r14,0,4,4 # E3
rlwimi r0,r14,7,5,5 # F3
rlwimi r0,r14,14,6,6 # G3
rlwimi r0,r14,21,7,7 # H3
rlwimi r0,r15,28,8,8 # I3
rlwimi r0,r15,3,9,9 # J3
rlwimi r0,r15,10,10,10 # K3
rlwimi r0,r15,17,11,11 # L3
rlwimi r0,r16,24,12,12 # M3
rlwimi r0,r16,31,13,13 # N3
rlwimi r0,r16,6,14,14 # O3
rlwimi r0,r16,13,15,15 # P3
rlwimi r0,r17,20,16,16 # Q3
rlwimi r0,r17,27,17,17 # R3
rlwimi r0,r17,2,18,18 # S3
rlwimi r0,r17,9,19,19 # T3
rlwimi r0,r18,16,20,20 # U3
rlwimi r0,r18,23,21,21 # V3
rlwimi r0,r18,30,22,22 # W3
rlwimi r0,r18,5,23,23 # X3
rlwimi r0,r19,12,24,24 # Y3
rlwimi r0,r19,19,25,25 # Z3
rlwimi r0,r19,26,26,26 # a3
rlwimi r0,r19,1,27,27 # b3
rlwimi r0,r20,8,28,28 # c3
rlwimi r0,r20,15,29,29 # d3
rlwimi r0,r20,22,30,30 # e3
rlwimi r0,r20,29,31,31 # f3
stwx r0,r8,r3 # store to BP4+offset
rlwimi r21,r13,5,0,0 # A2
rlwimi r21,r13,12,1,1 # B2
rlwimi r21,r13,19,2,2 # C2
rlwimi r21,r13,26,3,3 # D2
rlwimi r21,r14,1,4,4 # E2
rlwimi r21,r14,8,5,5 # F2
rlwimi r21,r14,15,6,6 # G2
rlwimi r21,r14,22,7,7 # H2
rlwimi r21,r15,29,8,8 # I2
rlwimi r21,r15,4,9,9 # J2
rlwimi r21,r15,11,10,10 # K2
rlwimi r21,r15,18,11,11 # L2
rlwimi r21,r16,25,12,12 # M2
rlwimi r21,r16,0,13,13 # N2
rlwimi r21,r16,7,14,14 # O2
rlwimi r21,r16,14,15,15 # P2
rlwimi r21,r17,21,16,16 # Q2
rlwimi r21,r17,28,17,17 # R2
rlwimi r21,r17,3,18,18 # S2
rlwimi r21,r17,10,19,19 # T2
rlwimi r21,r18,17,20,20 # U2
rlwimi r21,r18,24,21,21 # V2
rlwimi r21,r18,31,22,22 # W2
rlwimi r21,r18,6,23,23 # X2
rlwimi r21,r19,13,24,24 # Y2
rlwimi r21,r19,20,25,25 # Z2
rlwimi r21,r19,27,26,26 # a2
rlwimi r21,r19,2,27,27 # b2
rlwimi r21,r20,9,28,28 # c2
rlwimi r21,r20,16,29,29 # d2
rlwimi r21,r20,23,30,30 # e2
rlwimi r21,r20,30,31,31 # f2
stwx r21,r7,r3 # store to BP3+offset
rlwimi r0,r13,6,0,0 # A1
rlwimi r0,r13,13,1,1 # B1
rlwimi r0,r13,20,2,2 # C1
rlwimi r0,r13,27,3,3 # D1
rlwimi r0,r14,2,4,4 # E1
rlwimi r0,r14,9,5,5 # F1
rlwimi r0,r14,16,6,6 # G1
rlwimi r0,r14,23,7,7 # H1
rlwimi r0,r15,30,8,8 # I1
rlwimi r0,r15,5,9,9 # J1
rlwimi r0,r15,12,10,10 # K1
rlwimi r0,r15,19,11,11 # L1
rlwimi r0,r16,26,12,12 # M1
rlwimi r0,r16,1,13,13 # N1
rlwimi r0,r16,8,14,14 # O1
rlwimi r0,r16,15,15,15 # P1
rlwimi r0,r17,22,16,16 # Q1
rlwimi r0,r17,29,17,17 # R1
rlwimi r0,r17,4,18,18 # S1
rlwimi r0,r17,11,19,19 # T1
rlwimi r0,r18,18,20,20 # U1
rlwimi r0,r18,25,21,21 # V1
rlwimi r0,r18,0,22,22 # W1
rlwimi r0,r18,7,23,23 # X1
rlwimi r0,r19,14,24,24 # Y1
rlwimi r0,r19,21,25,25 # Z1
rlwimi r0,r19,28,26,26 # a1
rlwimi r0,r19,3,27,27 # b1
rlwimi r0,r20,10,28,28 # c1
rlwimi r0,r20,17,29,29 # d1
rlwimi r0,r20,24,30,30 # e1
rlwimi r0,r20,31,31,31 # f1
stwx r0,r6,r3 # store to BP2+offset
rlwimi r21,r13,7,0,0 # A0
rlwimi r21,r13,14,1,1 # B0
rlwimi r21,r13,21,2,2 # C0
rlwimi r21,r13,28,3,3 # D0
rlwimi r21,r14,3,4,4 # E0
rlwimi r21,r14,10,5,5 # F0
rlwimi r21,r14,17,6,6 # G0
rlwimi r21,r14,24,7,7 # H0
rlwimi r21,r15,31,8,8 # I0
rlwimi r21,r15,6,9,9 # J0
rlwimi r21,r15,13,10,10 # K0
rlwimi r21,r15,20,11,11 # L0
rlwimi r21,r16,27,12,12 # M0
rlwimi r21,r16,2,13,13 # N0
rlwimi r21,r16,9,14,14 # O0
rlwimi r21,r16,16,15,15 # P0
rlwimi r21,r17,23,16,16 # Q0
rlwimi r21,r17,30,17,17 # r21
rlwimi r21,r17,5,18,18 # S0
rlwimi r21,r17,12,19,19 # T0
rlwimi r21,r18,19,20,20 # U0
rlwimi r21,r18,26,21,21 # V0
rlwimi r21,r18,1,22,22 # W0
rlwimi r21,r18,8,23,23 # X0
rlwimi r21,r19,15,24,24 # Y0
rlwimi r21,r19,22,25,25 # Z0
rlwimi r21,r19,29,26,26 # a0
rlwimi r21,r19,4,27,27 # b0
rlwimi r21,r20,11,28,28 # c0
rlwimi r21,r20,18,29,29 # d0
rlwimi r21,r20,25,30,30 # e0
rlwimi r21,r20,0,31,31 # f0
stwx r21,r5,r3 # store to BP1+offset
addi r4,r4,32
addi r3,r3,4
bdnz c2p_loop # decrement ctr, branch non-zero
lswi r13,r1,0 # restore registers
lwz r21,32(r1)
addi r1,r1,36
blr
