Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [PATCH v5 02/16] powerpc: Override __ALIGN and __ALIGN_STR macros | Date | Thu, 03 Nov 2022 11:01:54 +1100 |
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Christophe Leroy <christophe.leroy@csgroup.eu> writes: > Le 28/10/2022 à 16:33, Sathvika Vasireddy a écrit : >> In a subsequent patch, we would want to annotate powerpc assembly functions >> with SYM_FUNC_START_LOCAL macro. This macro depends on __ALIGN macro. >> >> The default expansion of __ALIGN macro is: >> #define __ALIGN .align 4,0x90 >> >> So, override __ALIGN and __ALIGN_STR macros to use the same alignment as >> that of the existing _GLOBAL macro. Also, do not pad with 0x90, because >> repeated 0x90s are not a nop or trap on powerpc. > > By the way, do we know what the instruction 0x90909090 is on powerpc ? > Is that something valid or not ?
According to objdump it's:
stw r4,-28528(r16)
cheers
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