Date: Sat, 4 May 2002 19:28:47 -0700 (PDT) From: Jake Burkholder <jake@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 10813 for review Message-ID: <200205050228.g452SlW41643@freefall.freebsd.org>
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http://people.freebsd.org/~peter/p4db/chv.cgi?CH=10813 Change 10813 by jake@jake_sparc64 on 2002/05/04 19:28:26 Make a macro for the guts of tl0_immu_miss, like dmmu_miss and prot. Rearrange things slightly so that the contents of the tag access register are read and restored outside of the macros. The intention is to pass the page size to look up as an argument to the macros. Affected files ... ... //depot/projects/sparc64/sys/sparc64/sparc64/exception.s#72 edit Differences ... ==== //depot/projects/sparc64/sys/sparc64/sparc64/exception.s#72 (text+ko) ==== @@ -543,19 +543,7 @@ .align 32 .endm - .macro tl0_immu_miss - /* - * Force kernel store order. - */ - wrpr %g0, PSTATE_MMU, %pstate - - /* - * Load the virtual page number and context from the tag access - * register. We ignore the context. - */ - wr %g0, ASI_IMMU, %asi - ldxa [%g0 + AA_IMMU_TAR] %asi, %g2 - + .macro immu_miss_user /* * Extract the virtual page number from the contents of the tag * access register. @@ -623,13 +611,22 @@ andcc %g1, (1 << (TSB_BUCKET_SHIFT + TTE_SHIFT)) - 1, %g0 bnz,a,pt %xcc, 1b nop + .endm + + .macro tl0_immu_miss + /* + * Force kernel store order. + */ + wrpr %g0, PSTATE_MMU, %pstate /* - * Put back the contents of the tag access register, in case we - * faulted. + * Load the virtual page number and context from the tag access + * register. We ignore the context. */ - stxa %g2, [%g0 + AA_IMMU_TAR] %asi - membar #Sync + wr %g0, ASI_IMMU, %asi + ldxa [%g0 + AA_IMMU_TAR] %asi, %g2 + + immu_miss_user b,a %xcc, tl0_immu_miss_trap nop @@ -658,6 +655,13 @@ ENTRY(tl0_immu_miss_trap) /* + * Put back the contents of the tag access register, in case we + * faulted. + */ + stxa %g2, [%g0 + AA_IMMU_TAR] %asi + membar #Sync + + /* * Switch to alternate globals. */ wrpr %g0, PSTATE_ALT, %pstate @@ -678,13 +682,6 @@ .macro dmmu_miss_user /* - * Load the virtual page number and context from the tag access - * register. We ignore the context. - */ - wr %g0, ASI_DMMU, %asi - ldxa [%g0 + AA_DMMU_TAR] %asi, %g2 - - /* * Extract the virtual page number from the contents of the tag * access register. */ @@ -748,13 +745,6 @@ andcc %g1, (1 << (TSB_BUCKET_SHIFT + TTE_SHIFT)) - 1, %g0 bnz,a,pt %xcc, 1b nop - - /* - * Put back the contents of the tag access register, in case we - * faulted. - */ - stxa %g2, [%g0 + AA_DMMU_TAR] %asi - membar #Sync .endm ENTRY(dmmu_miss_user_set_ref) @@ -784,6 +774,13 @@ wrpr %g0, PSTATE_MMU, %pstate /* + * Load the virtual page number and context from the tag access + * register. We ignore the context. + */ + wr %g0, ASI_DMMU, %asi + ldxa [%g0 + AA_DMMU_TAR] %asi, %g2 + + /* * Try a fast inline lookup of the primary tsb. */ dmmu_miss_user @@ -798,6 +795,13 @@ ENTRY(tl0_dmmu_miss_trap) /* + * Put back the contents of the tag access register, in case we + * faulted. + */ + stxa %g2, [%g0 + AA_DMMU_TAR] %asi + membar #Sync + + /* * Switch to alternate globals. */ wrpr %g0, PSTATE_ALT, %pstate @@ -818,13 +822,6 @@ .macro dmmu_prot_user /* - * Load the virtual page number and context from the tag access - * register. We ignore the context. - */ - wr %g0, ASI_DMMU, %asi - ldxa [%g0 + AA_DMMU_TAR] %asi, %g2 - - /* * Extract the virtual page number from the contents of the tag * access register. */ @@ -879,13 +876,6 @@ andcc %g1, (1 << (TSB_BUCKET_SHIFT + TTE_SHIFT)) - 1, %g0 bnz,a,pt %xcc, 1b nop - - /* - * Put back the contents of the tag access register, in case we - * faulted. - */ - stxa %g2, [%g0 + AA_DMMU_TAR] %asi - membar #Sync .endm .macro tl0_dmmu_prot @@ -895,6 +885,13 @@ wrpr %g0, PSTATE_MMU, %pstate /* + * Load the virtual page number and context from the tag access + * register. We ignore the context. + */ + wr %g0, ASI_DMMU, %asi + ldxa [%g0 + AA_DMMU_TAR] %asi, %g2 + + /* * Try a fast inline lookup of the tsb. */ dmmu_prot_user @@ -937,6 +934,13 @@ ENTRY(tl0_dmmu_prot_trap) /* + * Put back the contents of the tag access register, in case we + * faulted. + */ + stxa %g2, [%g0 + AA_DMMU_TAR] %asi + membar #Sync + + /* * Switch to alternate globals. */ wrpr %g0, PSTATE_ALT, %pstate @@ -1330,13 +1334,14 @@ * the virtual page number. */ sllx %g6, 64 - TAR_VPN_SHIFT, %g5 - brnz,pn %g5, tl1_dmmu_miss_user - srlx %g6, TAR_VPN_SHIFT, %g6 + brnz,a,pn %g5, tl1_dmmu_miss_user + mov %g6, %g2 /* * Find the index into the kernel tsb. */ set TSB_KERNEL_MASK, %g4 + srlx %g6, TAR_VPN_SHIFT, %g6 and %g6, %g4, %g3 /* @@ -1404,6 +1409,13 @@ dmmu_miss_user /* + * Put back the contents of the tag access register, in case we + * faulted. + */ + stxa %g2, [%g0 + AA_DMMU_TAR] %asi + membar #Sync + + /* * Switch to alternate globals. */ wrpr %g0, PSTATE_ALT, %pstate @@ -1438,13 +1450,14 @@ * the virtual page number. */ sllx %g6, 64 - TAR_VPN_SHIFT, %g5 - brnz,pn %g5, tl1_dmmu_prot_user - srlx %g6, TAR_VPN_SHIFT, %g6 + brnz,a,pn %g5, tl1_dmmu_prot_user + mov %g6, %g2 /* * Find the index into the kernel tsb. */ set TSB_KERNEL_MASK, %g4 + srlx %g6, TAR_VPN_SHIFT, %g6 and %g6, %g4, %g5 /* @@ -1479,6 +1492,12 @@ stxa %g0, [%g0 + AA_DMMU_SFSR] %asi membar #Sync + ba,a %xcc, tl1_dmmu_prot_cont + nop + .align 128 + .endm + +ENTRY(tl1_dmmu_prot_cont) /* * Set the hardware write bit. */ @@ -1490,8 +1509,7 @@ or %g5, TD_W, %g5 stxa %g5, [%g0] ASI_DTLB_DATA_IN_REG retry - .align 128 - .endm +END(tl1_dmmu_prot_cont) ENTRY(tl1_dmmu_prot_user) /* @@ -1500,6 +1518,13 @@ dmmu_prot_user /* + * Put back the contents of the tag access register, in case we + * faulted. + */ + stxa %g2, [%g0 + AA_DMMU_TAR] %asi + membar #Sync + + /* * Switch to alternate globals. */ wrpr %g0, PSTATE_ALT, %pstate To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe p4-projects" in the body of the message
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