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cm3: Only inline asm is allowed in naked functions

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According to: https://gcc.gnu.org/onlinedocs/gcc-6.2.0/gcc/ARM-Function-Attributes.html

"Only basic asm statements can safely be included in naked functions (see Basic
Asm). While using extended asm or a mixture of basic asm and C code may appear
to work, they cannot be depended upon to work reliably and are not supported."
This commit is contained in:
keepkeyjon 2018-03-07 07:53:11 -07:00 committed by Karl Palsson
parent f2589bc7d8
commit f53e12d2da
2 changed files with 3 additions and 3 deletions
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4
include/libopencm3/cm3/scb.h
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@ -437,11 +437,11 @@ struct scb_exception_stack_frame {
: [frameptr]"=r" (f)); \ : [frameptr]"=r" (f)); \
} while (0) } while (0)
void scb_reset_system(void) __attribute__((noreturn, naked)); void scb_reset_system(void) __attribute__((noreturn));
/* Those defined only on ARMv7 and above */ /* Those defined only on ARMv7 and above */
#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__) #if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
void scb_reset_core(void) __attribute__((noreturn, naked)); void scb_reset_core(void) __attribute__((noreturn));
void scb_set_priority_grouping(uint32_t prigroup); void scb_set_priority_grouping(uint32_t prigroup);
#endif #endif

2
lib/cm3/vector.c
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@ -59,7 +59,7 @@ vector_table_t vector_table = {
} }
}; };
void __attribute__ ((weak, naked)) reset_handler(void) void __attribute__ ((weak)) reset_handler(void)
{ {
volatile unsigned *src, *dest; volatile unsigned *src, *dest;
funcp_t *fp; funcp_t *fp;