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riscv: Properly align the thread stack

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Update #3433.
This commit is contained in:
Sebastian Huber
2018-06-29 10:04:37 +02:00
parent a49a3c8eed
commit 04698ebd49
1 changed files with 7 additions and 3 deletions
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cpukit/score/cpu/riscv/riscv-context-initialize.c
+7 -3
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@@ -1,4 +1,5 @@
/*
* Copyright (c) 2018 embedded brains GmbH
*
* Copyright (c) 2015 University of York.
* Hesham Almatary <hesham@alumni.york.ac.uk>
@@ -33,6 +34,7 @@
#endif
#include <rtems/score/cpu.h>
#include <rtems/score/address.h>
#include <rtems/score/riscv-utility.h>
void _CPU_Context_Initialize(
@@ -45,12 +47,14 @@ void _CPU_Context_Initialize(
void *tls_area
)
{
uintptr_t stack = ((uintptr_t) stack_area_begin);
void *stack;
uintptr_t stack_high = stack + stack_area_size;
stack = _Addresses_Add_offset( stack_area_begin, stack_area_size );
stack = _Addresses_Align_down( stack, CPU_STACK_ALIGNMENT );
/* Stack Pointer - sp/x2 */
context->x[2] = stack_high;
context->x[2] = (uintptr_t) stack;
/* Frame Pointer - fp/x8 */
context->x[8] = stack_high;
/* Return Address - ra/x1 */