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7563dc6458
This bug is causing random crashes (http://bugzilla.kernel.org/show_bug.cgi?id=11414). -fno-omit-frame-pointer is only needed on powerpc when -pg is also supplied, and there is a gcc bug that causes incorrect code generation on 32-bit powerpc when -fno-omit-frame-pointer is used---it uses stack locations below the stack pointer, which is not allowed by the ABI because those locations can and sometimes do get corrupted by an interrupt. This ensures that CONFIG_FRAME_POINTER is only selected by ftrace. When CONFIG_FTRACE is enabled we also pass -mno-sched-epilog to work around the gcc codegen bug. Patch based on work by: Andreas Schwab <schwab@suse.de> Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
21 lines
782 B
Makefile
21 lines
782 B
Makefile
CFLAGS_bootx_init.o += -fPIC
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ifdef CONFIG_FTRACE
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# Do not trace early boot code
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CFLAGS_REMOVE_bootx_init.o = -pg -mno-sched-epilog
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endif
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obj-y += pic.o setup.o time.o feature.o pci.o \
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sleep.o low_i2c.o cache.o pfunc_core.o \
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pfunc_base.o udbg_scc.o udbg_adb.o
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obj-$(CONFIG_PMAC_BACKLIGHT) += backlight.o
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obj-$(CONFIG_CPU_FREQ_PMAC) += cpufreq_32.o
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obj-$(CONFIG_CPU_FREQ_PMAC64) += cpufreq_64.o
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# CONFIG_NVRAM is an arch. independant tristate symbol, for pmac32 we really
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# need this to be a bool. Cheat here and pretend CONFIG_NVRAM=m is really
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# CONFIG_NVRAM=y
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obj-$(CONFIG_NVRAM:m=y) += nvram.o
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# ppc64 pmac doesn't define CONFIG_NVRAM but needs nvram stuff
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obj-$(CONFIG_PPC64) += nvram.o
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obj-$(CONFIG_PPC32) += bootx_init.o
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obj-$(CONFIG_SMP) += smp.o
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