root / tests / xtensa / test_pipeline.S @ 7d890b40
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.include "macros.inc" |
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|
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.purgem test |
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.macro test name |
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movi a2, 1f |
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movi a3, 99f |
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0: |
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ipf a2, 0 |
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ipf a2, 4 |
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ipf a2, 8 |
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ipf a2, 12 |
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addi a2, a2, 16 |
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blt a2, a3, 0b |
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j 1f |
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.align 4 |
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1: |
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.endm |
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|
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test_suite pipeline |
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|
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test register_no_stall |
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rsr a3, ccount |
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add a5, a6, a6 |
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add a6, a5, a5 |
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rsr a4, ccount |
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sub a3, a4, a3 |
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assert eqi, a3, 3 |
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test_end |
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|
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test register_stall |
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l32i a5, a1, 0 /* data cache preload */ |
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nop |
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rsr a3, ccount |
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l32i a5, a1, 0 |
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add a6, a5, a5 /* M-to-E interlock */ |
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rsr a4, ccount |
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sub a3, a4, a3 |
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assert eqi, a3, 4 |
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test_end |
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|
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test j0_stall |
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rsr a3, ccount |
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j 1f /* E + 2-cycle penalty */ |
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1: |
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rsr a4, ccount /* E */ |
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sub a3, a4, a3 |
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assert eqi, a3, 4 |
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test_end |
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|
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test j1_stall |
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rsr a3, ccount |
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j 1f |
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nop |
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1: |
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rsr a4, ccount |
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sub a3, a4, a3 |
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assert eqi, a3, 4 |
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test_end |
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|
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test j5_stall |
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rsr a3, ccount |
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j 1f |
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nop |
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nop |
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nop |
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nop |
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nop |
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1: |
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rsr a4, ccount |
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sub a3, a4, a3 |
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assert eqi, a3, 4 |
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test_end |
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|
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test b_no_stall |
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movi a5, 1 |
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rsr a3, ccount |
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beqi a5, 2, 1f |
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rsr a4, ccount |
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sub a3, a4, a3 |
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assert eqi, a3, 2 |
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1: |
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test_end |
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|
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test b1_stall |
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movi a5, 1 |
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rsr a3, ccount |
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beqi a5, 1, 1f |
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nop |
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1: |
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rsr a4, ccount |
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sub a3, a4, a3 |
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assert eqi, a3, 4 |
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test_end |
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|
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test b5_stall |
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movi a5, 1 |
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rsr a3, ccount |
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beqi a5, 1, 1f |
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nop |
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nop |
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nop |
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nop |
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nop |
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1: |
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rsr a4, ccount |
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sub a3, a4, a3 |
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assert eqi, a3, 4 |
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test_end |
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|
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/* PS *SYNC */ |
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|
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test ps_dsync |
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rsr a5, ps |
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isync |
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rsr a3, ccount |
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wsr a5, ps |
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dsync |
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rsr a4, ccount |
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sub a3, a4, a3 |
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assert eqi, a3, 5 |
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test_end |
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|
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test ps_esync |
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rsr a5, ps |
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isync |
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rsr a3, ccount |
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wsr a5, ps |
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esync |
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rsr a4, ccount |
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sub a3, a4, a3 |
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assert eqi, a3, 5 |
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test_end |
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|
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test ps_rsync |
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rsr a5, ps |
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isync |
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rsr a3, ccount |
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wsr a5, ps |
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rsync |
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rsr a4, ccount |
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sub a3, a4, a3 |
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assert eqi, a3, 5 |
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test_end |
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|
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test ps_isync |
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rsr a5, ps |
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isync |
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rsr a3, ccount |
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wsr a5, ps |
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isync |
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rsr a4, ccount |
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sub a3, a4, a3 |
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movi a4, 9 |
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assert eq, a3, a4 |
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test_end |
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|
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test_suite_end |