Hi,
I am reading the assembly list file of the compiler before write my asm code. Below the dot line is the asm file from optimizing tutorial lesson3_c.c, there is a branch instruction at address: 00006784
00006784: 20000011 || [ B0] B.S1 C$L1 (PC+0 = 0x00006760)
What does "C$L1 (PC+0 = 0x00006760)" mean? It means jump to C$L1 when [B0] is not 0? But, in fact it never jumps to C$L1 (PC+0 = 0x00006760) when I step through 00006784. It goes to:
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
C$DW$L$_lesson2_c$3$E, C$L3:
000067e0: 0291307B ADD.L2X B9,A4,B5
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
at the loop end.
Could you explain it to me? Thanks.
I am running CCS5.2 on Windows 7 OS.
....................................
26 w1 = zptr[0];
lesson2_c:
00006740: 01980244 LDH.D1T1 *+A6[0],A3
27 w2 = zptr[1];
00006744: 03182247 LDH.D1T2 *+A6[1],B6
00006748: 021B805B || SUB.L2 B6,4,B4
0000674c: 03938059 || SUB.L1 A4,4,A7
00006750: 039381A2 || SUB.S2 B4,4,B7
31 w_vec1 = xptr[i] * w1;
00006754: 010403E2 MVC.S2 CSR,B2
00006758: 028BCF5A AND.L2 -2,B2,B5
0000675c: 009403A2 MVC.S2 B5,CSR
C$L1:
00006760: 00000410 B.S1 C$L2 (PC+32 = 0x00006780)
00006764: 02A03DA3 SHR.S2X A8,0x1,B5
00006768: 009C52C6 || LDH.D2T2 *++B7[2],B1
0000676c: 0210405B ADD.L2 2,B4,B4
00006770: 01901059 || MV.L1X B4,A3
00006774: 008001A9 || MVK.S1 0x0003,A1
00006778: 0017A1A3 || SUB.S2 B5,3,B0
0000677c: 040C0940 || MV.D1 A3,A8
C$DW$L$_lesson2_c$3$B, C$L2:
00006780: 0291307B ADD.L2X B9,A4,B5
00006784: 20000011 || [ B0] B.S1 C$L1 (PC+0 = 0x00006760)
00006788: 0498AC83 || MPY.M2 B5,B6,B9
0000678c: 029C5245 || LDH.D1T1 *++A7[2],A5
00006790: 029C22C7 || LDH.D2T2 *+B7[1],B5
00006794: 00000001 || NOP
00006798: 00000001 || NOP
0000679c: 00000000 || NOP
000067a0: 0415EDA3 SHR.S2 B5,0xf,B8
000067a4: 928C5255 || [!A1] STH.D1T1 A5,*++A3[2]
000067a8: 02208C81 || MPY.M1 A4,A8,A4
000067ac: 0220D079 || ADD.L1X A6,B8,A4
000067b0: 04182C83 || MPY.M2 B1,B6,B8
000067b4: 009C52C7 || LDH.D2T2 *++B7[2],B1
000067b8: 00000001 || NOP
000067bc: 00000000 || NOP
000067c0: 8087E059 [ A1] SUB.L1 A1,1,A1
000067c4: 941052D7 || [!A1] STH.D2T2 B8,*++B4[2]
000067c8: 0291EDA1 || SHR.S1 A4,0xf,A5
000067cc: 2003E05B || [ B0] SUB.L2 B0,1,B0
000067d0: 0320AC81 || MPY.M1 A5,A8,A6
000067d4: 021C2245 || LDH.D1T1 *+A7[1],A4
000067d8: 00000001 || NOP
000067dc: 00000000 || NOP
C$DW$L$_lesson2_c$3$E, C$L3:
000067e0: 0291307B ADD.L2X B9,A4,B5
000067e4: 0398AC83 || MPY.M2 B5,B6,B7
000067e8: 021C5245 || LDH.D1T1 *++A7[2],A4
000067ec: 041C22C7 || LDH.D2T2 *+B7[1],B8
000067f0: 00000001 || NOP
000067f4: 00000001 || NOP
000067f8: 00000001 || NOP
000067fc: 00000000 || NOP
