Date: Mon, 27 Sep 2010 13:08:35 +0200 From: =?UTF-8?B?VmxhZGltaXIgJ8+GLWNvZGVyL3BoY29kZXInIFNlcmJpbmVua28=?= <phcoder@gmail.com> To: freebsd-mips@freebsd.org Subject: Re: [PATCH] [yeeloong] Create frame in blkclr Message-ID: <4CA07B33.7070803@gmail.com> In-Reply-To: <4CA04686.2080101@gmail.com>
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[-- Attachment #1 --] On 09/27/2010 09:23 AM, Vladimir 'φ-coder/phcoder' Serbinenko wrote: > It happens often that one tries to bzero an incorrect range which, of > course, triggers a kernel panic but unfortunately backtrace doesn't work > properly because bzero doesn't create a stack frame. Attached patch fixes it > > -- Regards Vladimir 'φ-coder/phcoder' Serbinenko [-- Attachment #2 --] === modified file 'mips/mips/support.S' --- mips/mips/support.S 2010-08-13 22:16:49 +0000 +++ mips/mips/support.S 2010-08-13 22:20:49 +0000 @@ -97,6 +97,8 @@ #include "assym.s" +#define MAKE_FRAMES 1 + .set noreorder # Noreorder is default style! /* @@ -827,6 +829,12 @@ LEAF(bzero) ALEAF(blkclr) .set noreorder +#ifdef MAKE_FRAMES + daddiu sp, sp, -32 + sd ra, 16(sp) + sd a0, 8(sp) + sd a1, 0(sp) +#endif blt a1, 12, smallclr # small amount to clear? PTR_SUBU a3, zero, a0 # compute # bytes to word align address and a3, a3, 3 @@ -851,11 +859,13 @@ bne a0, a3, 1b sb zero, -1(a0) 2: +#ifdef MAKE_FRAMES + daddiu sp, sp, 32 +#endif j ra nop END(bzero) - /* * bcmp(s1, s2, n) */home | help
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