24.22.4.8.3. gem5 event queue DerivO3CPU syscall emulation freestanding example analysis: hazard4
Like gem5 event queue DerivO3CPU syscall emulation freestanding example analysis: hazard but a hazard of depth 4: userland/arch/aarch64/freestanding/linux/hazard.S.
// f = fetch, d = decode, n = rename, p = dispatch, i = issue, c = complete, r = retire
timeline tick pc.upc disasm seq_num
[.ic.r........................................................................fdn]-( 40000) 0x00400078.0 movz x0, #0, #0 [ 1]
[.ic.r........................................................................fdn]-( 40000) 0x0040007c.0 movz x1, #1, #0 [ 2]
[....................fdn.ic.r....................................................]-( 120000) 0x00400080.0 movz x2, #2, #0 [ 3]
[....................fdn.pic.r...................................................]-( 120000) 0x00400084.0 add x3, x2, #1 [ 4]
[....................fdn.p.ic.r..................................................]-( 120000) 0x00400088.0 add x4, x3, #1 [ 5]
[....................fdn.p..ic.r.................................................]-( 120000) 0x0040008c.0 add x5, x4, #1 [ 6]
[....................fdn.p...ic.r................................................]-( 120000) 0x00400090.0 add x6, x5, #1 [ 7]
[....................fdn.ic.....r................................................]-( 120000) 0x00400094.0 movz x7, #7, #0 [ 8]
[....................fdn.ic.....r................................................]-( 120000) 0x00400098.0 movz x8, #8, #0 [ 9]
[....................fdn.ic.....r................................................]-( 120000) 0x0040009c.0 movz x9, #9, #0 [ 10]
[.....................fdn.ic....r................................................]-( 120000) 0x004000a0.0 movz x10, #10, #0 [ 11]
[.....................fdn.ic....r................................................]-( 120000) 0x004000a4.0 movz x11, #11, #0 [ 12]
[.....................fdn.ic....r................................................]-( 120000) 0x004000a8.0 movz x12, #12, #0 [ 13]
[.....................fdn.ic....r................................................]-( 120000) 0x004000ac.0 movz x13, #13, #0 [ 14]
[.....................fdn.ic.....r...............................................]-( 120000) 0x004000b0.0 movz x14, #14, #0 [ 15]
[.....................fdn.pic....r...............................................]-( 120000) 0x004000b4.0 movz x15, #15, #0 [ 16]
[.....................fdn.pic....r...............................................]-( 120000) 0x004000b8.0 movz x16, #16, #0 [ 17]
[.....................fdn.pic....r...............................................]-( 120000) 0x004000bc.0 movz x17, #17, #0 [ 18]
[............................................fdn.ic.r............................]-( 160000) 0x004000c0.0 movz x18, #18, #0 [ 19]
[............................................fdn.ic.r............................]-( 160000) 0x004000c4.0 movz x19, #19, #0 [ 20]
[............................................fdn.ic.r............................]-( 160000) 0x004000c8.0 movz x20, #20, #0 [ 21]
[............................................fdn.ic.r............................]-( 160000) 0x004000cc.0 movz x21, #21, #0 [ 22]
[............................................fdn.ic.r............................]-( 160000) 0x004000d0.0 movz x22, #22, #0 [ 23]
[............................................fdn.ic.r............................]-( 160000) 0x004000d4.0 movz x23, #23, #0 [ 24]
[............................................fdn.pic.r...........................]-( 160000) 0x004000d8.0 movz x24, #24, #0 [ 25]
[............................................fdn.pic.r...........................]-( 160000) 0x004000dc.0 movz x25, #25, #0 [ 26]
[.............................................fdn.ic.r...........................]-( 160000) 0x004000e0.0 movz x0, #0, #0 [ 27]
[.............................................fdn.ic.r...........................]-( 160000) 0x004000e4.0 movz x8, #93, #0 [ 28]