45 lines
1.7 KiB
Plaintext
45 lines
1.7 KiB
Plaintext
----------------------------------------------------------------------
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Patch name: patch.seg-limit-real
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Author: Bryce Denney
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Date: Wed Jun 13 10:54:16 EDT 2001
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Detailed description:
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See sourceforge bug
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[ #429383 ] real mode seg limit: Bochs does #GP when Pentium does not
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URL is
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http://bochs.sf.net/cgi-bin/topper.pl?sftype=bug&id=429383
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This patch may be applied if we can convince ourselves that real
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processors do not do this exception. The Intel docs say that the
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exception should happen under these circumstances, but Kasper Andersen
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reports that his pentium does not.
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Apply patch to:
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current CVS
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Instructions:
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To patch, go to main bochs directory.
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Type "patch -p0 < THIS_PATCH_FILE".
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----------------------------------------------------------------------
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Index: cpu/access.cc
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===================================================================
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RCS file: /cvsroot/bochs/bochs/cpu/access.cc,v
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retrieving revision 1.7
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diff -u -r1.7 access.cc
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--- cpu/access.cc 2001/05/30 18:56:01 1.7
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+++ cpu/access.cc 2001/06/11 16:09:08
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@@ -98,10 +98,10 @@
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else { /* real mode */
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if ( (offset + length - 1) > seg->cache.u.segment.limit_scaled) {
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- //BX_INFO(("write_virtual_checks() SEG EXCEPTION: %x:%x + %x",
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- // (unsigned) seg->selector.value, (unsigned) offset, (unsigned) length));
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- if (seg == & BX_CPU_THIS_PTR sregs[2]) exception(BX_SS_EXCEPTION, 0, 0);
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- else exception(BX_GP_EXCEPTION, 0, 0);
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+ BX_ERROR(("write_virtual_checks() SEG EXCEPTION IGNORED: %x:%x + %x",
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+ (unsigned) seg->selector.value, (unsigned) offset, (unsigned) length));
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+ //if (seg == & BX_CPU_THIS_PTR sregs[2]) exception(BX_SS_EXCEPTION, 0, 0);
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+ //else exception(BX_GP_EXCEPTION, 0, 0);
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}
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}
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}
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