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zephyr/arch/arc/include/swap_macros.h

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First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
/* swap_macros.h - helper macros for context switch */
/*
* Copyright (c) 2014 Wind River Systems, Inc.
*
license: Replace Apache boilerplate with SPDX tag Replace the existing Apache 2.0 boilerplate header with an SPDX tag throughout the zephyr code tree. This patch was generated via a script run over the master branch. Also updated doc/porting/application.rst that had a dependency on line numbers in a literal include. Manually updated subsys/logging/sys_log.c that had a malformed header in the original file. Also cleanup several cases that already had a SPDX tag and we either got a duplicate or missed updating. Jira: ZEP-1457 Change-Id: I6131a1d4ee0e58f5b938300c2d2fc77d2e69572c Signed-off-by: David B. Kinder <david.b.kinder@intel.com> Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-01-19 09:01:01 +08:00
* SPDX-License-Identifier: Apache-2.0
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
*/
#ifndef _SWAP_MACROS__H_
#define _SWAP_MACROS__H_
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
#include <kernel_structs.h>
#include <offsets_short.h>
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
#include <toolchain.h>
Renaming include/nanokernel to include/arch Renaming the directory include/nanokernel to be include/arch, which better reflects the real nature of the directory and the contents inside. Change-Id: I2bc33ebc6715e2f0403227a558279fdf52398ade Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
2015-05-29 01:56:47 +08:00
#include <arch/cpu.h>
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
c++: Add extern "C" { } block to header files Adds extern "C" { } blocks to header files so that they can be safely used by C++ source files. Change-Id: Ia4db0c36a5dac5d3de351184a297d2af0df64532 Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
2016-01-23 01:38:49 +08:00
#ifdef __cplusplus
extern "C" {
#endif
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
#ifdef _ASMLANGUAGE
/* entering this macro, current is in r2 */
.macro _save_callee_saved_regs
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
sub_s sp, sp, ___callee_saved_stack_t_SIZEOF
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
/* save regs on stack */
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
st_s r13, [sp, ___callee_saved_stack_t_r13_OFFSET]
st_s r14, [sp, ___callee_saved_stack_t_r14_OFFSET]
st_s r15, [sp, ___callee_saved_stack_t_r15_OFFSET]
st r16, [sp, ___callee_saved_stack_t_r16_OFFSET]
st r17, [sp, ___callee_saved_stack_t_r17_OFFSET]
st r18, [sp, ___callee_saved_stack_t_r18_OFFSET]
st r19, [sp, ___callee_saved_stack_t_r19_OFFSET]
st r20, [sp, ___callee_saved_stack_t_r20_OFFSET]
st r21, [sp, ___callee_saved_stack_t_r21_OFFSET]
st r22, [sp, ___callee_saved_stack_t_r22_OFFSET]
st r23, [sp, ___callee_saved_stack_t_r23_OFFSET]
st r24, [sp, ___callee_saved_stack_t_r24_OFFSET]
st r25, [sp, ___callee_saved_stack_t_r25_OFFSET]
st r26, [sp, ___callee_saved_stack_t_r26_OFFSET]
st fp, [sp, ___callee_saved_stack_t_fp_OFFSET]
st r30, [sp, ___callee_saved_stack_t_r30_OFFSET]
arc: Fix the bug in _load_callee_saved_regs load floating register first, or the value of r13 is not correct Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-05-17 17:32:43 +08:00
boards: Update arc em_starterkit support from 2.2 to 2.3 Here are the main changes: * board: Update EMSK onboard resources such as Button, Switch and LEDs + update soc.h for em7d, em9d, em11d + update board.h for em_starterkit board * arc: Add floating point support and code density support + add kconfig configuration + add compiler options + add register definitions, marcos, assembly codes + fixes in existing codes and configurations. * arc: Update detailed board configurations for cores of emsk 2.3 * script: Provide arc_debugger.sh for debugging em_starterkit board + make BOARD=em_starterkit debug This will start openocd server for emsk, and arc gdb will connect to this debug server, user can run `continue` command if user just want to run the application, or other commands if debugging needed. + make BOARD=em_starterkit debugserver This will start an openocd debugger server for emsk, and user can connect to this debugserver using arc gdb and do what they want to. + make BOARD=em_starterkit flash This will download the zephyr application elf file to emsk, and run it. Signed-off-by: Huaqi Fang <huaqi.fang@synopsys.com>
2017-05-17 15:18:51 +08:00
#ifdef CONFIG_FP_SHARING
st r58, [sp, ___callee_saved_stack_t_r58_OFFSET]
st r59, [sp, ___callee_saved_stack_t_r59_OFFSET]
lr r13, [_ARC_V2_FPU_STATUS]
st_s r13, [sp, ___callee_saved_stack_t_fpu_status_OFFSET]
lr r13, [_ARC_V2_FPU_CTRL]
st_s r13, [sp, ___callee_saved_stack_t_fpu_ctrl_OFFSET]
#ifdef CONFIG_FP_FPU_DA
lr r13, [_ARC_V2_FPU_DPFP1L]
st_s r13, [sp, ___callee_saved_stack_t_dpfp1l_OFFSET]
lr r13, [_ARC_V2_FPU_DPFP1H]
st_s r13, [sp, ___callee_saved_stack_t_dpfp1h_OFFSET]
lr r13, [_ARC_V2_FPU_DPFP2L]
st_s r13, [sp, ___callee_saved_stack_t_dpfp2l_OFFSET]
lr r13, [_ARC_V2_FPU_DPFP2H]
st_s r13, [sp, ___callee_saved_stack_t_dpfp2h_OFFSET]
#endif
#endif
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
clarify use of term 'context' The term 'context' is vague and overloaded. Its usage for 'an execution context' is now referred as such, in both comments and some APIs' names. When the execution context can only be a fiber or a task (i.e. not an ISR), it is referred to as a 'thread', again in comments and everywhere in the code. APIs that had their names changed: - nano_context_id_t is now nano_thread_id_t - context_self_get() is now sys_thread_self_get() - context_type_get() is now sys_execution_context_type_get() - context_custom_data_set/get() are now sys_thread_custom_data_set/get() The 'context' prefix namespace does not have to be reserved by the kernel anymore. The Context Control Structure (CCS) data structure is now the Thread Control Structure (TCS): - struct ccs is now struct tcs - tCCS is now tTCS Change-Id: I7526a76c5b01e7c86333078e2d2e77c9feef5364 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2015-08-20 23:04:01 +08:00
/* save stack pointer in struct tcs */
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
st sp, [r2, _thread_offset_to_sp]
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
.endm
/* entering this macro, current is in r2 */
.macro _load_callee_saved_regs
clarify use of term 'context' The term 'context' is vague and overloaded. Its usage for 'an execution context' is now referred as such, in both comments and some APIs' names. When the execution context can only be a fiber or a task (i.e. not an ISR), it is referred to as a 'thread', again in comments and everywhere in the code. APIs that had their names changed: - nano_context_id_t is now nano_thread_id_t - context_self_get() is now sys_thread_self_get() - context_type_get() is now sys_execution_context_type_get() - context_custom_data_set/get() are now sys_thread_custom_data_set/get() The 'context' prefix namespace does not have to be reserved by the kernel anymore. The Context Control Structure (CCS) data structure is now the Thread Control Structure (TCS): - struct ccs is now struct tcs - tCCS is now tTCS Change-Id: I7526a76c5b01e7c86333078e2d2e77c9feef5364 Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2015-08-20 23:04:01 +08:00
/* restore stack pointer from struct tcs */
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
ld sp, [r2, _thread_offset_to_sp]
boards: Update arc em_starterkit support from 2.2 to 2.3 Here are the main changes: * board: Update EMSK onboard resources such as Button, Switch and LEDs + update soc.h for em7d, em9d, em11d + update board.h for em_starterkit board * arc: Add floating point support and code density support + add kconfig configuration + add compiler options + add register definitions, marcos, assembly codes + fixes in existing codes and configurations. * arc: Update detailed board configurations for cores of emsk 2.3 * script: Provide arc_debugger.sh for debugging em_starterkit board + make BOARD=em_starterkit debug This will start openocd server for emsk, and arc gdb will connect to this debug server, user can run `continue` command if user just want to run the application, or other commands if debugging needed. + make BOARD=em_starterkit debugserver This will start an openocd debugger server for emsk, and user can connect to this debugserver using arc gdb and do what they want to. + make BOARD=em_starterkit flash This will download the zephyr application elf file to emsk, and run it. Signed-off-by: Huaqi Fang <huaqi.fang@synopsys.com>
2017-05-17 15:18:51 +08:00
#ifdef CONFIG_FP_SHARING
ld r58, [sp, ___callee_saved_stack_t_r58_OFFSET]
ld r59, [sp, ___callee_saved_stack_t_r59_OFFSET]
ld_s r13, [sp, ___callee_saved_stack_t_fpu_status_OFFSET]
sr r13, [_ARC_V2_FPU_STATUS]
ld_s r13, [sp, ___callee_saved_stack_t_fpu_ctrl_OFFSET]
sr r13, [_ARC_V2_FPU_CTRL]
#ifdef CONFIG_FP_FPU_DA
ld_s r13, [sp, ___callee_saved_stack_t_dpfp1l_OFFSET]
sr r13, [_ARC_V2_FPU_DPFP1L]
ld_s r13, [sp, ___callee_saved_stack_t_dpfp1h_OFFSET]
sr r13, [_ARC_V2_FPU_DPFP1H]
ld_s r13, [sp, ___callee_saved_stack_t_dpfp2l_OFFSET]
sr r13, [_ARC_V2_FPU_DPFP2L]
ld_s r13, [sp, ___callee_saved_stack_t_dpfp2h_OFFSET]
sr r13, [_ARC_V2_FPU_DPFP2H]
#endif
#endif
arc: Fix the bug in _load_callee_saved_regs load floating register first, or the value of r13 is not correct Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2017-05-17 17:32:43 +08:00
ld_s r13, [sp, ___callee_saved_stack_t_r13_OFFSET]
ld_s r14, [sp, ___callee_saved_stack_t_r14_OFFSET]
ld_s r15, [sp, ___callee_saved_stack_t_r15_OFFSET]
ld r16, [sp, ___callee_saved_stack_t_r16_OFFSET]
ld r17, [sp, ___callee_saved_stack_t_r17_OFFSET]
ld r18, [sp, ___callee_saved_stack_t_r18_OFFSET]
ld r19, [sp, ___callee_saved_stack_t_r19_OFFSET]
ld r20, [sp, ___callee_saved_stack_t_r20_OFFSET]
ld r21, [sp, ___callee_saved_stack_t_r21_OFFSET]
ld r22, [sp, ___callee_saved_stack_t_r22_OFFSET]
ld r23, [sp, ___callee_saved_stack_t_r23_OFFSET]
ld r24, [sp, ___callee_saved_stack_t_r24_OFFSET]
ld r25, [sp, ___callee_saved_stack_t_r25_OFFSET]
ld r26, [sp, ___callee_saved_stack_t_r26_OFFSET]
ld fp, [sp, ___callee_saved_stack_t_fp_OFFSET]
ld r30, [sp, ___callee_saved_stack_t_r30_OFFSET]
boards: Update arc em_starterkit support from 2.2 to 2.3 Here are the main changes: * board: Update EMSK onboard resources such as Button, Switch and LEDs + update soc.h for em7d, em9d, em11d + update board.h for em_starterkit board * arc: Add floating point support and code density support + add kconfig configuration + add compiler options + add register definitions, marcos, assembly codes + fixes in existing codes and configurations. * arc: Update detailed board configurations for cores of emsk 2.3 * script: Provide arc_debugger.sh for debugging em_starterkit board + make BOARD=em_starterkit debug This will start openocd server for emsk, and arc gdb will connect to this debug server, user can run `continue` command if user just want to run the application, or other commands if debugging needed. + make BOARD=em_starterkit debugserver This will start an openocd debugger server for emsk, and user can connect to this debugserver using arc gdb and do what they want to. + make BOARD=em_starterkit flash This will download the zephyr application elf file to emsk, and run it. Signed-off-by: Huaqi Fang <huaqi.fang@synopsys.com>
2017-05-17 15:18:51 +08:00
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
add_s sp, sp, ___callee_saved_stack_t_SIZEOF
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
.endm
quark_se: PM: Add multicore support This patch changes Quark SE power drivers to support multicore scenarios e.g. both LMT and ARC core are enabled and manage power. Handling LPS states in multicore scenarios are dead simple because LPS states are core-specific states. It means that putting the LMT core in LPS doesn't affect the ARC core, and vice-versa. DEEP_SLEEP state, on the other hand, affects both cores since it turns power off from the SoC and both cores are shutdown. It means that if LMT puts the system in DEEP_SLEEP, ARC core is shutdown even if it is busy handling some task. In order to support the multicore scenario, this patch introduces the SYS_POWER_STATE_DEEP_SLEEP_2 state to both ARC and x86 power drivers. On ARC, this state works as following: 1) Save ARC execution context; 2) Raise a flag to inform the x86 core that ARC is ready to enter in DEEP_SLEEP; 3) Enter in the lowest core-specific power state, which in this case is LPSS. On x86, DEEP_SLEEP_2 is very similar to DEEP_SLEEP. The difference relies in the post_ops() which calls _arc_init() in order to start ARC core so it can restore its context. This patch also adds the test/power/multicore/ directory which provides sample application to x86 and ARC cores in order to easily verify the multicore support. In test/power/multicore/README.rst you can find more details regarding the applications. Jira: ZEP-1103 Change-Id: Ie28ba6d193ea0e58fca69d38f8d3c38ca259a9ef Signed-off-by: Andre Guedes <andre.guedes@intel.com>
2016-12-22 05:26:17 +08:00
.macro _discard_callee_saved_regs
add_s sp, sp, ___callee_saved_stack_t_SIZEOF
.endm
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
/*
* Must be called with interrupts locked or in P0.
* Upon exit, sp will be pointing to the stack frame.
*/
.macro _create_irq_stack_frame
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
sub_s sp, sp, ___isf_t_SIZEOF
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
st blink, [sp, ___isf_t_blink_OFFSET]
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
/* store these right away so we can use them if needed */
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
st_s r13, [sp, ___isf_t_r13_OFFSET]
st_s r12, [sp, ___isf_t_r12_OFFSET]
st r11, [sp, ___isf_t_r11_OFFSET]
st r10, [sp, ___isf_t_r10_OFFSET]
st r9, [sp, ___isf_t_r9_OFFSET]
st r8, [sp, ___isf_t_r8_OFFSET]
st r7, [sp, ___isf_t_r7_OFFSET]
st r6, [sp, ___isf_t_r6_OFFSET]
st r5, [sp, ___isf_t_r5_OFFSET]
st r4, [sp, ___isf_t_r4_OFFSET]
st_s r3, [sp, ___isf_t_r3_OFFSET]
st_s r2, [sp, ___isf_t_r2_OFFSET]
st_s r1, [sp, ___isf_t_r1_OFFSET]
st_s r0, [sp, ___isf_t_r0_OFFSET]
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
mov r0, lp_count
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
st_s r0, [sp, ___isf_t_lp_count_OFFSET]
arc: do lr and sr instructions together, avoid instruction pipeline bubble The lr and sr instructions cause a pipeline bubble. There is an efficiency to be gained if pairs of lr or sr instructions are done right next to each other. This can avoid some stall cycles. Also, r14 and r15 can be used with isa-16 instructions. Change-Id: I4165365b49da910db31e0699a1a6e47114962942 Signed-off-by: Chuck Jordan <cjordan@synopsys.com>
2016-05-07 08:37:40 +08:00
lr r1, [_ARC_V2_LP_START]
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
lr r0, [_ARC_V2_LP_END]
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
st_s r1, [sp, ___isf_t_lp_start_OFFSET]
st_s r0, [sp, ___isf_t_lp_end_OFFSET]
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
boards: Update arc em_starterkit support from 2.2 to 2.3 Here are the main changes: * board: Update EMSK onboard resources such as Button, Switch and LEDs + update soc.h for em7d, em9d, em11d + update board.h for em_starterkit board * arc: Add floating point support and code density support + add kconfig configuration + add compiler options + add register definitions, marcos, assembly codes + fixes in existing codes and configurations. * arc: Update detailed board configurations for cores of emsk 2.3 * script: Provide arc_debugger.sh for debugging em_starterkit board + make BOARD=em_starterkit debug This will start openocd server for emsk, and arc gdb will connect to this debug server, user can run `continue` command if user just want to run the application, or other commands if debugging needed. + make BOARD=em_starterkit debugserver This will start an openocd debugger server for emsk, and user can connect to this debugserver using arc gdb and do what they want to. + make BOARD=em_starterkit flash This will download the zephyr application elf file to emsk, and run it. Signed-off-by: Huaqi Fang <huaqi.fang@synopsys.com>
2017-05-17 15:18:51 +08:00
#ifdef CONFIG_CODE_DENSITY
lr r1, [_ARC_V2_JLI_BASE]
lr r0, [_ARC_V2_LDI_BASE]
lr r2, [_ARC_V2_EI_BASE]
st_s r1, [sp, ___isf_t_jli_base_OFFSET]
st_s r0, [sp, ___isf_t_ldi_base_OFFSET]
st_s r2, [sp, ___isf_t_ei_base_OFFSET]
#endif
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
.endm
/*
* Must be called with interrupts locked or in P0.
* sp must be pointing the to stack frame.
*/
.macro _pop_irq_stack_frame
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
ld blink, [sp, ___isf_t_blink_OFFSET]
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
boards: Update arc em_starterkit support from 2.2 to 2.3 Here are the main changes: * board: Update EMSK onboard resources such as Button, Switch and LEDs + update soc.h for em7d, em9d, em11d + update board.h for em_starterkit board * arc: Add floating point support and code density support + add kconfig configuration + add compiler options + add register definitions, marcos, assembly codes + fixes in existing codes and configurations. * arc: Update detailed board configurations for cores of emsk 2.3 * script: Provide arc_debugger.sh for debugging em_starterkit board + make BOARD=em_starterkit debug This will start openocd server for emsk, and arc gdb will connect to this debug server, user can run `continue` command if user just want to run the application, or other commands if debugging needed. + make BOARD=em_starterkit debugserver This will start an openocd debugger server for emsk, and user can connect to this debugserver using arc gdb and do what they want to. + make BOARD=em_starterkit flash This will download the zephyr application elf file to emsk, and run it. Signed-off-by: Huaqi Fang <huaqi.fang@synopsys.com>
2017-05-17 15:18:51 +08:00
#ifdef CONFIG_CODE_DENSITY
ld_s r1, [sp, ___isf_t_jli_base_OFFSET]
ld_s r0, [sp, ___isf_t_ldi_base_OFFSET]
ld_s r2, [sp, ___isf_t_ei_base_OFFSET]
sr r1, [_ARC_V2_JLI_BASE]
sr r0, [_ARC_V2_LDI_BASE]
sr r2, [_ARC_V2_EI_BASE]
#endif
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
ld_s r0, [sp, ___isf_t_lp_count_OFFSET]
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
mov lp_count, r0
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
ld_s r1, [sp, ___isf_t_lp_start_OFFSET]
ld_s r0, [sp, ___isf_t_lp_end_OFFSET]
arc: do lr and sr instructions together, avoid instruction pipeline bubble The lr and sr instructions cause a pipeline bubble. There is an efficiency to be gained if pairs of lr or sr instructions are done right next to each other. This can avoid some stall cycles. Also, r14 and r15 can be used with isa-16 instructions. Change-Id: I4165365b49da910db31e0699a1a6e47114962942 Signed-off-by: Chuck Jordan <cjordan@synopsys.com>
2016-05-07 08:37:40 +08:00
sr r1, [_ARC_V2_LP_START]
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
sr r0, [_ARC_V2_LP_END]
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
ld_s r13, [sp, ___isf_t_r13_OFFSET]
ld_s r12, [sp, ___isf_t_r12_OFFSET]
ld r11, [sp, ___isf_t_r11_OFFSET]
ld r10, [sp, ___isf_t_r10_OFFSET]
ld r9, [sp, ___isf_t_r9_OFFSET]
ld r8, [sp, ___isf_t_r8_OFFSET]
ld r7, [sp, ___isf_t_r7_OFFSET]
ld r6, [sp, ___isf_t_r6_OFFSET]
ld r5, [sp, ___isf_t_r5_OFFSET]
ld r4, [sp, ___isf_t_r4_OFFSET]
ld_s r3, [sp, ___isf_t_r3_OFFSET]
ld_s r2, [sp, ___isf_t_r2_OFFSET]
ld_s r1, [sp, ___isf_t_r1_OFFSET]
ld_s r0, [sp, ___isf_t_r0_OFFSET]
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
boards: Update arc em_starterkit support from 2.2 to 2.3 Here are the main changes: * board: Update EMSK onboard resources such as Button, Switch and LEDs + update soc.h for em7d, em9d, em11d + update board.h for em_starterkit board * arc: Add floating point support and code density support + add kconfig configuration + add compiler options + add register definitions, marcos, assembly codes + fixes in existing codes and configurations. * arc: Update detailed board configurations for cores of emsk 2.3 * script: Provide arc_debugger.sh for debugging em_starterkit board + make BOARD=em_starterkit debug This will start openocd server for emsk, and arc gdb will connect to this debug server, user can run `continue` command if user just want to run the application, or other commands if debugging needed. + make BOARD=em_starterkit debugserver This will start an openocd debugger server for emsk, and user can connect to this debugserver using arc gdb and do what they want to. + make BOARD=em_starterkit flash This will download the zephyr application elf file to emsk, and run it. Signed-off-by: Huaqi Fang <huaqi.fang@synopsys.com>
2017-05-17 15:18:51 +08:00
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
/*
* All gprs have been reloaded, the only one that is still usable is
* ilink.
*
* The pc and status32 values will still be on the stack. We cannot
* pop them yet because the callers of _pop_irq_stack_frame must reload
power: Add ARC core suspend and resume support When going into DEEP_SLEEP mode, the ARC core now saves its context. This includes: - All core registers - Stack pointer - Program counter (restored by jumping to the restore code) The arc reset code now checks if the GPS0 bit 2 is set. This is similar to the behavior of the x86 core done by the QMSI bootloader which is setting GPS0 bit 1 in order to call the restore path instead of cold boot path. The sample has been adapted in order to support the ARC. Jira: ZEP-1222 Change-Id: I375f03b16b8a5fd1f07ead55cf7e4947d6290c9f Signed-off-by: Julien Delayen <julien.delayen@intel.com>
2016-11-01 21:07:34 +08:00
* status32 differently depending on the execution context they are
* running in (_Swap(), firq or exception).
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
*/
kernel/arch: consolidate tTCS and TNANO definitions There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
2016-11-08 23:36:50 +08:00
add_s sp, sp, ___isf_t_SIZEOF
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
.endm
#endif /* _ASMLANGUAGE */
c++: Add extern "C" { } block to header files Adds extern "C" { } blocks to header files so that they can be safely used by C++ source files. Change-Id: Ia4db0c36a5dac5d3de351184a297d2af0df64532 Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
2016-01-23 01:38:49 +08:00
#ifdef __cplusplus
}
#endif
First commit Signed-off-by: <inaky.perez-gonzalez@intel.com>
2015-04-11 07:44:37 +08:00
#endif /* _SWAP_MACROS__H_ */