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stmhal: Fix pyb.bootloader so it works for gcc-4.9.0.

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See PR #618.
This commit is contained in:
Damien George 2014-06-08 14:01:43 +01:00
parent 26a95ae1e7
commit 57b4dfa9c9
1 changed files with 6 additions and 1 deletions
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7
stmhal/modpyb.c
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@ -72,7 +72,12 @@ STATIC NORETURN mp_obj_t pyb_bootloader(void) {
HAL_DeInit();
__HAL_REMAPMEMORY_SYSTEMFLASH();
__set_MSP(*((uint32_t*) 0x00000000));
// arm-none-eabi-gcc 4.9.0 does not correctly inline this
// MSP function, so we write it out explicitly here.
//__set_MSP(*((uint32_t*) 0x00000000));
__ASM volatile ("movs r3, #0\nldr r3, [r3, #0]\nMSR msp, r3\n" : : : "r3", "sp");
((void (*)(void)) *((uint32_t*) 0x00000004))();
while (1);