:#define data_base_reg %l2
:#define global_cnt_reg %l5
:#define prot_area_reg %l6
:th_fork(th_main,test_reg1)
for ( $c = 0; $c < $proc_num; $c++ ){
$offs = 4 * $c; # threads own address offset
: setx addrA, test_reg1, addrA_reg !
: setx turn, test_reg1, turn_reg !
: setx prot_area, test_reg1, prot_area_reg !
: set ITERATIONS, global_cnt_reg
: set ${c}, my_id_reg ! store my ID
: set 1, test_reg1 ! store 1 in lock area
: st test_reg1, [addrA_reg + ${offs}]
:giveturnaway${c}: ! That's the essence
$next = ($c + 1) % ${proc_num};
: set ${next}, test_reg1 ! of Peterson
: st test_reg1, [turn_reg] ! to give the turn away
: membar 0x40 ! THAT's IMPORTANT!
:getlock${c}: ! try to get lock
: ld [turn_reg + 0x8], test_reg1
: sub test_reg1, 0x55, test_reg1 ! check for end of test
: brz test_reg1, good_end
: mov %g0, test_reg2 ! while flags are busy
for ( $k = 0; $k < ${proc_num} * 4; $k = $k + 4) {
: ld [addrA_reg + ${k}], test_reg1 ! accumulate flags
: add test_reg1, test_reg2, test_reg2 ! in test_reg2
: subcc test_reg2, 0x1, %g0 ! if 1 -> not busy
: ld [turn_reg], test_reg3 ! read the turn reg.
: subcc my_id_reg, test_reg3, %g0 ! and check
:gotlock${c}: ! do something
: ld [prot_area_reg], test_reg1
: st test_reg1, [prot_area_reg]
: ld [prot_area_reg + 0xc], test_reg1
: st test_reg1, [prot_area_reg + 0xc]
: ld [prot_area_reg + 0x10], test_reg1
: st test_reg1, [prot_area_reg + 0x10]
: ld [prot_area_reg + 0x1c], test_reg1
: st test_reg1, [prot_area_reg + 0x1c]
: ld [prot_area_reg + 0x20], test_reg1
: st test_reg1, [prot_area_reg + 0x20]
: st %g0, [addrA_reg + ${offs}] ! release...
: st test_reg1, [turn_reg]
: deccc global_cnt_reg ! iterate
: st test_reg1, [turn_reg + 0x8]
:!---------------------------------------------------------------------
:!==========================
:SECTION .MY_DATA0 TEXT_VA=0xf0100000, DATA_VA=0xd0100000
: PA= ra2pa(0x1d0100000,0),
: part_0_ctx_nonzero_tsb_config_0,
: TTE_G=1, TTE_Context=0x44, TTE_V=1, TTE_Size=0, TTE_NFO=0,
: TTE_IE=0, TTE_Soft2=0, TTE_Diag=0, TTE_Soft=0,
: TTE_L=0, TTE_CP=1, TTE_CV=1, TTE_E=0, TTE_P=0, TTE_W=1
: PA= ra2pa(0x1f0100000,0),
: part_0_ctx_nonzero_tsb_config_0,
: TTE_G=1, TTE_Context=0x44, TTE_V=1, TTE_Size=0, TTE_NFO=0,
: TTE_IE=0, TTE_Soft2=0, TTE_Diag=0, TTE_Soft=0,
: TTE_L=0, TTE_CP=1, TTE_CV=1, TTE_E=0, TTE_P=0, TTE_W=1
for ( $k = 0; $k < 32; $k++) {
:SECTION .MY_DATA1 TEXT_VA=0xf1110000, DATA_VA=0xd1110000
: PA= ra2pa(0x1d1110000,0),
: part_0_ctx_nonzero_tsb_config_0,
: TTE_G=1, TTE_Context=0x44, TTE_V=1, TTE_Size=0, TTE_NFO=0,
: TTE_IE=0, TTE_Soft2=0, TTE_Diag=0, TTE_Soft=0,
: TTE_L=0, TTE_CP=1, TTE_CV=1, TTE_E=0, TTE_P=0, TTE_W=1
: PA= ra2pa(0x1f1110000,0),
: part_0_ctx_nonzero_tsb_config_0,
: TTE_G=1, TTE_Context=0x44, TTE_V=1, TTE_Size=0, TTE_NFO=0,
: TTE_IE=0, TTE_Soft2=0, TTE_Diag=0, TTE_Soft=0,
: TTE_L=0, TTE_CP=1, TTE_CV=1, TTE_E=0, TTE_P=0, TTE_W=1