RTEMS 6.1-rc5
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Example CPU Architecture Support. More...
Modules | |
CPUEndian | |
CPUEndian. | |
Example Assembler Support | |
Management | |
Management. | |
Processor Dependent Bitfield Manipulation | |
Processor Dependent Context Management | |
Destroys the context of the thread. | |
Processor Dependent Interrupt Management | |
Data Structures | |
struct | CPU_Per_CPU_control |
The CPU specific per-CPU control. More... | |
Macros | |
#define | CPU_PER_CPU_CONTROL_SIZE 0 |
The size of the CPU specific per-CPU control. | |
#define | CPU_THREAD_LOCAL_STORAGE_VARIANT 10 |
Defines the thread-local storage (TLS) variant. | |
#define | _CPU_Get_current_per_CPU_control() ( _CPU_Per_CPU_current ) |
Optional method to obtain the per-CPU control of the current processor. | |
#define | _CPU_Get_thread_executing() ( _CPU_Per_CPU_current->executing ) |
Optional method to get the executing thread. | |
Functions | |
register struct Per_CPU_Control *_CPU_Per_CPU_current | asm ("rX") |
Special register pointing to the per-CPU control of the current processor. | |
void | _CPU_Context_volatile_clobber (uintptr_t pattern) |
void | _CPU_Context_validate (uintptr_t pattern) |
Example CPU Architecture Support.
#define _CPU_Get_current_per_CPU_control | ( | ) | ( _CPU_Per_CPU_current ) |
Optional method to obtain the per-CPU control of the current processor.
This is optional. Not every CPU port needs this. It is only an optional optimization variant. In case this macro is undefined, the default implementation using the current processor index will be used.
#define _CPU_Get_thread_executing | ( | ) | ( _CPU_Per_CPU_current->executing ) |
Optional method to get the executing thread.
This is optional. Not every CPU port needs this. It is only an optional optimization variant. In case this macro is undefined, the default implementation uses the per-CPU information and the current processor index to get the executing thread.
#define CPU_PER_CPU_CONTROL_SIZE 0 |
The size of the CPU specific per-CPU control.
This define must be visible to assember files since it is used to derive structure offsets.
#define CPU_THREAD_LOCAL_STORAGE_VARIANT 10 |
Defines the thread-local storage (TLS) variant.
Use one of the following values:
10: The architecture uses Variant I and the TLS offsets emitted by the linker neglect the TCB (examples: nios2, m68k, microblaze, powerpc, riscv). The thread pointer directly references the thread-local data area.
11: The architecture uses Variant I and the TLS offsets emitted by the linker take the TCB into account (examples: arm, aarch64). The thread pointer references the TCB.
20: The architecture uses Variant II (examples: i386, sparc).
register struct Per_CPU_Control *_CPU_Per_CPU_current asm | ( | "rX" | ) |
Special register pointing to the per-CPU control of the current processor.
This is optional. Not every CPU port needs this. It is only an optional optimization variant.