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Do not strip required symbols when LTO is on

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Link time optimization was stripping off some symbols which were
accessed from assembly code.
This commit is contained in:
Gaurav Aggarwal
2019-05-09 22:04:29 +00:00
parent b6e5f96f0e
commit b9e379951a
36 changed files with 2535 additions and 80 deletions
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40
FreeRTOS/Demo/Common/ARMv8M/mpu_demo/mpu_demo.c
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@ -162,9 +162,10 @@ TaskParameters_t xRWAccessTaskParameters =
}
/*-----------------------------------------------------------*/
void vHandleMemoryFault( uint32_t * pulFaultStackAddress )
portDONT_DISCARD void vHandleMemoryFault( uint32_t * pulFaultStackAddress )
{
uint32_t ulPC;
uint16_t usOffendingInstruction;
/* Is this an expected fault? */
if( ucROTaskFaultTracker[ 0 ] == 1 )
@ -172,8 +173,41 @@ uint32_t ulPC;
/* Read program counter. */
ulPC = pulFaultStackAddress[ 6 ];
/* Increment the program counter by 2 to move to the next instruction. */
ulPC += 2;
/* Read the offending instruction. */
usOffendingInstruction = *( uint16_t * )ulPC;
/* From ARM docs:
* If the value of bits[15:11] of the halfword being decoded is one of
* the following, the halfword is the first halfword of a 32-bit
* instruction:
* - 0b11101.
* - 0b11110.
* - 0b11111.
* Otherwise, the halfword is a 16-bit instruction.
*/
/* Extract bits[15:11] of the offending instruction. */
usOffendingInstruction = usOffendingInstruction & 0xF800;
usOffendingInstruction = ( usOffendingInstruction >> 11 );
/* Determine if the offending instruction is a 32-bit instruction or
* a 16-bit instruction. */
if( usOffendingInstruction == 0x001F ||
usOffendingInstruction == 0x001E ||
usOffendingInstruction == 0x001D )
{
/* Since the offending instruction is a 32-bit instruction,
* increment the program counter by 4 to move to the next
* instruction. */
ulPC += 4;
}
else
{
/* Since the offending instruction is a 16-bit instruction,
* increment the program counter by 2 to move to the next
* instruction. */
ulPC += 2;
}
/* Save the new program counter on the stack. */
pulFaultStackAddress[ 6 ] = ulPC;