Date: Wed, 18 Apr 2007 11:02:30 GMT From: Oleksandr Tymoshenko <gonzo@FreeBSD.org> To: Perforce Change Reviews <perforce@FreeBSD.org> Subject: PERFORCE change 118354 for review Message-ID: <200704181102.l3IB2UeO010485@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=118354 Change 118354 by gonzo@gonzo_jeeves on 2007/04/18 11:02:28 o Rollback latest change and add comment why this is the right thing (tm). Affected files ... .. //depot/projects/mips2/src/lib/libc/mips/sys/sbrk.S#6 edit Differences ... ==== //depot/projects/mips2/src/lib/libc/mips/sys/sbrk.S#6 (text+ko) ==== @@ -55,15 +55,29 @@ .cpload t9 .set reorder #endif - lw v1, _C_LABEL(__curbrk) + addu sp, sp, -4 + sw s0, 0(sp) # Preserve s0 value in stack + # it should be the same on return + # We can't use v1 as temporary + # register since syscall uses it + # to return 64-bit values + lw s0, _C_LABEL(__curbrk) li v0, SYS_break - addu a0, a0, v1 # compute current break + addu a0, a0, s0 # compute current break + syscall + bne a3, zero, 1f - move v0, v1 # return old val of curbrk from above + nop + move v0, s0 # return old val of curbrk from above + lw s0, 0(sp) + addu sp, sp, 4 sw a0, _C_LABEL(__curbrk) # save current val of curbrk from above j ra + 1: + lw s0, 0(sp) + addu sp, sp, 4 la t9, _C_LABEL(__cerror) jr t9 END(__sys_sbrk)
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