Date: Fri, 14 Mar 2008 04:07:49 GMT From: Marcel Moolenaar <marcel@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 137678 for review Message-ID: <200803140407.m2E47nBX080754@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=137678 Change 137678 by marcel@marcel_xcllnt on 2008/03/14 04:07:16 Install rstcode at the EXC_RST vector. It now saves some critical information and goes into an infinite loop, but will be fleshed out to get the AP into a usable state. Affected files ... .. //depot/projects/powerpc/sys/powerpc/aim/machdep.c#7 edit .. //depot/projects/powerpc/sys/powerpc/aim/trap_subr.S#3 edit Differences ... ==== //depot/projects/powerpc/sys/powerpc/aim/machdep.c#7 (text+ko) ==== @@ -241,6 +241,7 @@ extern char kernel_text[], _end[]; +extern void *rstcode, *rstsize; extern void *trapcode, *trapsize; extern void *alitrap, *alisize; extern void *dsitrap, *dsisize; @@ -326,7 +327,7 @@ */ mtmsr(mfmsr() & ~(PSL_IR | PSL_DR)); isync(); - bcopy(&trapcode, (void *)EXC_RST, (size_t)&trapsize); + bcopy(&rstcode, (void *)EXC_RST, (size_t)&rstsize); bcopy(&trapcode, (void *)EXC_MCHK, (size_t)&trapsize); bcopy(&dsitrap, (void *)EXC_DSI, (size_t)&dsisize); bcopy(&trapcode, (void *)EXC_ISI, (size_t)&trapsize); @@ -343,7 +344,6 @@ bcopy(&trapcode, (void *)EXC_THRM, (size_t)&trapsize); bcopy(&trapcode, (void *)EXC_BPT, (size_t)&trapsize); #ifdef KDB - bcopy(&dblow, (void *)EXC_RST, (size_t)&dbsize); bcopy(&dblow, (void *)EXC_MCHK, (size_t)&dbsize); bcopy(&dblow, (void *)EXC_PGM, (size_t)&dbsize); bcopy(&dblow, (void *)EXC_TRC, (size_t)&dbsize); ==== //depot/projects/powerpc/sys/powerpc/aim/trap_subr.S#3 (text+ko) ==== @@ -242,6 +242,26 @@ * (except ISI/DSI, ALI, and the interrupts) */ .text + + .globl CNAME(rstcode), CNAME(rstsize) +CNAME(rstcode): + bl 1f + + .long 0 + .long 0 + .long 0 + .long 0 + +1: + mflr %r3 + stw %r3, 0(%r3) + stw %r1, 4(%r3) + stw %r2, 8(%r3) + mfmsr %r4 + stw %r4, 12(%r3) +9: b 9b +CNAME(rstsize) = . - CNAME(rstcode) + .globl CNAME(trapcode),CNAME(trapsize) CNAME(trapcode): mtsprg1 %r1 /* save SP */
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