Author: mcayland Date: Tue Oct 5 10:52:49 2010 New Revision: 887 URL: http://tracker.coreboot.org/trac/openbios/changeset/887
Log: Fix the MMU TLB miss handlers so that they no longer crash when building SPARC64 with -O0.
This patch allocates an extra 192 bytes of stack space required by unoptimised gcc builds for saving arguments to the stack. As suggested by Igor previously (see http://lists.openbios.org/pipermail/openbios/2009-July/003762.html and SVN r508).
Signed-off-by: Mark Cave-Ayland mark.cave-ayland@siriusit.co.uk
Modified: trunk/openbios-devel/arch/sparc64/vectors.S
Modified: trunk/openbios-devel/arch/sparc64/vectors.S ============================================================================== --- trunk/openbios-devel/arch/sparc64/vectors.S Sun Oct 3 22:28:27 2010 (r886) +++ trunk/openbios-devel/arch/sparc64/vectors.S Tue Oct 5 10:52:49 2010 (r887) @@ -557,8 +557,9 @@
SAVE_CPU_STATE(dtlb)
- /* Switch to TLB locked stack space */ - add %g1, -STACK_BIAS, %sp + /* Switch to TLB locked stack space (note we add an additional 192 bytes required for + gcc to save its arguments when building with -O0) */ + add %g1, -STACK_BIAS - 192, %sp
/* Enable interrupts for window spill/fill traps */ rdpr %pstate, %g7 @@ -581,8 +582,9 @@
SAVE_CPU_STATE(itlb)
- /* Switch to TLB locked stack space */ - add %g1, -STACK_BIAS, %sp + /* Switch to TLB locked stack space (note we add an additional 192 bytes required for + gcc to save its arguments when building with -O0) */ + add %g1, -STACK_BIAS - 192, %sp
/* Enable interrupts for window spill/fill traps */ rdpr %pstate, %g7