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https://github.com/zephyrproject-rtos/zephyr
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13ca6fe284
- syscall.h now contains those APIs needed to support invoking calls
from user code. Some stuff moved out of main kernel.h.
- syscall_handler.h now contains directives useful for implementing
system call handler functions. This header is not pulled in by
kernel.h and is intended to be used by C files implementing kernel
system calls and driver subsystem APIs.
- syscall_list.h now contains the #defines for system call IDs. This
list is expected to grow quite large so it is put in its own header.
This is now an enumerated type instead of defines to make things
easier as we introduce system calls over the new few months. In the
fullness of time when we desire to have a fixed userspace/kernel ABI,
this can always be converted to defines.
Some new code added:
- _SYSCALL_MEMORY() macro added to check memory regions passed up from
userspace in handler functions
- _syscall_invoke{7...10}() inline functions declare for invoking system
calls with more than 6 arguments. 10 was chosen as the limit as that
corresponds to the largest arg list we currently have
which is for k_thread_create()
Other changes
- auto-generated K_SYSCALL_DECLARE* macros documented
- _k_syscall_table in userspace.c is not a placeholder. There's no
strong need to generate it and doing so would require the introduction
of a third build phase.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
/*
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* Copyright (c) 2013-2014 Wind River Systems, Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <device.h>
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#ifndef _kernel_offsets__h_
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#define _kernel_offsets__h_
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/*
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* The final link step uses the symbol _OffsetAbsSyms to force the linkage of
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* offsets.o into the ELF image.
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*/
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GEN_ABS_SYM_BEGIN(_OffsetAbsSyms)
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GEN_OFFSET_SYM(_kernel_t, current);
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#if defined(CONFIG_THREAD_MONITOR)
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GEN_OFFSET_SYM(_kernel_t, threads);
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#endif
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GEN_OFFSET_SYM(_kernel_t, nested);
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GEN_OFFSET_SYM(_kernel_t, irq_stack);
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#ifdef CONFIG_SYS_POWER_MANAGEMENT
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GEN_OFFSET_SYM(_kernel_t, idle);
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#endif
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GEN_OFFSET_SYM(_kernel_t, ready_q);
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GEN_OFFSET_SYM(_kernel_t, arch);
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GEN_OFFSET_SYM(_ready_q_t, cache);
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#ifdef CONFIG_FP_SHARING
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GEN_OFFSET_SYM(_kernel_t, current_fp);
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#endif
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GEN_ABSOLUTE_SYM(_STRUCT_KERNEL_SIZE, sizeof(struct _kernel));
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GEN_OFFSET_SYM(_thread_base_t, user_options);
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GEN_OFFSET_SYM(_thread_base_t, thread_state);
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GEN_OFFSET_SYM(_thread_base_t, prio);
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GEN_OFFSET_SYM(_thread_base_t, sched_locked);
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GEN_OFFSET_SYM(_thread_base_t, preempt);
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GEN_OFFSET_SYM(_thread_base_t, swap_data);
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GEN_OFFSET_SYM(_thread_t, base);
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GEN_OFFSET_SYM(_thread_t, caller_saved);
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GEN_OFFSET_SYM(_thread_t, callee_saved);
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GEN_OFFSET_SYM(_thread_t, arch);
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#ifdef CONFIG_THREAD_STACK_INFO
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GEN_OFFSET_SYM(_thread_stack_info_t, start);
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GEN_OFFSET_SYM(_thread_stack_info_t, size);
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GEN_OFFSET_SYM(_thread_t, stack_info);
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#endif
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#if defined(CONFIG_THREAD_MONITOR)
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GEN_OFFSET_SYM(_thread_t, next_thread);
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#endif
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#ifdef CONFIG_THREAD_CUSTOM_DATA
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GEN_OFFSET_SYM(_thread_t, custom_data);
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#endif
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GEN_ABSOLUTE_SYM(K_THREAD_SIZEOF, sizeof(struct k_thread));
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/* size of the device structure. Used by linker scripts */
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GEN_ABSOLUTE_SYM(_DEVICE_STRUCT_SIZE, sizeof(struct device));
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/* Access to enum values in asm code */
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GEN_ABSOLUTE_SYM(_SYSCALL_LIMIT, K_SYSCALL_LIMIT);
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GEN_ABSOLUTE_SYM(_SYSCALL_BAD, K_SYSCALL_BAD);
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#endif /* _kernel_offsets__h_ */
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