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Diffstat (limited to 'sys/arm/include/stack.h')
| -rw-r--r-- | sys/arm/include/stack.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/sys/arm/include/stack.h b/sys/arm/include/stack.h new file mode 100644 index 000000000000..f6ac6eec7dae --- /dev/null +++ b/sys/arm/include/stack.h @@ -0,0 +1,86 @@ +/*- + * Copyright (c) 2000, 2001 Ben Harris + * Copyright (c) 1996 Scott K. Stevens + * + * Mach Operating System + * Copyright (c) 1991,1990 Carnegie Mellon University + * All Rights Reserved. + * + * Permission to use, copy, modify and distribute this software and its + * documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR + * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie the + * rights to redistribute these changes. + */ + +#ifndef _MACHINE_STACK_H_ +#define _MACHINE_STACK_H_ + +#define INKERNEL(va) (((vm_offset_t)(va)) >= VM_MIN_KERNEL_ADDRESS) + +#define FR_SCP (0) +#define FR_RLV (-1) +#define FR_RSP (-2) +#define FR_RFP (-3) + +/* The state of the unwind process */ +struct unwind_state { + uint32_t registers[16]; + uint32_t start_pc; + uint32_t *insn; + u_int entries; + u_int byte; + uint16_t update_mask; +}; + +/* The register names */ +#define FP 11 +#define SP 13 +#define LR 14 +#define PC 15 + +#ifdef _KERNEL + +int unwind_stack_one(struct unwind_state *, int); + +struct linker_file; +void unwind_module_loaded(struct linker_file *); +void unwind_module_unloaded(struct linker_file *); + +#ifdef _SYS_PROC_H_ + +#include <machine/pcb.h> + +/* Get the current kernel thread stack usage. */ +#define GET_STACK_USAGE(total, used) do { \ + struct thread *td = curthread; \ + (total) = td->td_kstack_pages * PAGE_SIZE - sizeof(struct pcb); \ + (used) = td->td_kstack + (total) - (vm_offset_t)&td; \ +} while (0) + +static __inline bool +kstack_contains(struct thread *td, vm_offset_t va, size_t len) +{ + return (va >= td->td_kstack && va + len >= va && + va + len <= td->td_kstack + td->td_kstack_pages * PAGE_SIZE - + sizeof(struct pcb)); +} +#endif /* _SYS_PROC_H_ */ + +#endif + +#endif /* !_MACHINE_STACK_H_ */ |