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sparc: Relax CPU_STACK_ALIGNMENT

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Close #2352.
This commit is contained in:
Sebastian Huber
2017-01-23 15:04:44 +01:00
parent 4aa23c9641
commit 3d20f5fbb7
1 changed files with 3 additions and 12 deletions
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15
cpukit/score/cpu/sparc/rtems/score/cpu.h
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@@ -826,19 +826,10 @@ extern const CPU_Trap_table_entry _CPU_Trap_slot_template;
#define CPU_PARTITION_ALIGNMENT CPU_ALIGNMENT #define CPU_PARTITION_ALIGNMENT CPU_ALIGNMENT
/** /**
* This number corresponds to the byte alignment requirement for the * Stack frames must be doubleword aligned according to the System V ABI for
* stack. This alignment requirement may be stricter than that for the * SPARC.
* data types alignment specified by CPU_ALIGNMENT. If the CPU_ALIGNMENT
* is strict enough for the stack, then this should be set to 0.
*
* NOTE: This must be a power of 2 either 0 or greater than CPU_ALIGNMENT.
*
* The alignment restrictions for the SPARC are not that strict but this
* should unsure that the stack is always sufficiently alignment that the
* window overflow, underflow, and flush routines can use double word loads
* and stores.
*/ */
#define CPU_STACK_ALIGNMENT 16 #define CPU_STACK_ALIGNMENT CPU_ALIGNMENT
#ifndef ASM #ifndef ASM