diff options
Diffstat (limited to 'arch/ia64/include')
| -rw-r--r-- | arch/ia64/include/asm/ptrace.h | 8 | ||||
| -rw-r--r-- | arch/ia64/include/asm/syscall.h | 163 | ||||
| -rw-r--r-- | arch/ia64/include/asm/thread_info.h | 3 |
3 files changed, 171 insertions, 3 deletions
diff --git a/arch/ia64/include/asm/ptrace.h b/arch/ia64/include/asm/ptrace.h index 15f8dcfe6ee..6417c1ecb44 100644 --- a/arch/ia64/include/asm/ptrace.h +++ b/arch/ia64/include/asm/ptrace.h @@ -240,6 +240,12 @@ struct switch_stack { */ # define instruction_pointer(regs) ((regs)->cr_iip + ia64_psr(regs)->ri) +static inline unsigned long user_stack_pointer(struct pt_regs *regs) +{ + /* FIXME: should this be bspstore + nr_dirty regs? */ + return regs->ar_bspstore; +} + #define regs_return_value(regs) ((regs)->r8) /* Conserve space in histogram by encoding slot bits in address @@ -319,6 +325,8 @@ struct switch_stack { #define arch_has_block_step() (1) extern void user_enable_block_step(struct task_struct *); +#define __ARCH_WANT_COMPAT_SYS_PTRACE + #endif /* !__KERNEL__ */ /* pt_all_user_regs is used for PTRACE_GETREGS PTRACE_SETREGS */ diff --git a/arch/ia64/include/asm/syscall.h b/arch/ia64/include/asm/syscall.h new file mode 100644 index 00000000000..2f758a42f94 --- /dev/null +++ b/arch/ia64/include/asm/syscall.h @@ -0,0 +1,163 @@ +/* + * Access to user system call parameters and results + * + * Copyright (C) 2008 Intel Corp. Shaohua Li <shaohua.li@intel.com> + * + * This copyrighted material is made available to anyone wishing to use, + * modify, copy, or redistribute it subject to the terms and conditions + * of the GNU General Public License v.2. + * + * See asm-generic/syscall.h for descriptions of what we must do here. + */ + +#ifndef _ASM_SYSCALL_H +#define _ASM_SYSCALL_H 1 + +#include <linux/sched.h> +#include <linux/err.h> + +static inline long syscall_get_nr(struct task_struct *task, + struct pt_regs *regs) +{ + if ((long)regs->cr_ifs < 0) /* Not a syscall */ + return -1; + +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) + return regs->r1; +#endif + + return regs->r15; +} + +static inline void syscall_rollback(struct task_struct *task, + struct pt_regs *regs) +{ +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) + regs->r8 = regs->r1; +#endif + + /* do nothing */ +} + +static inline long syscall_get_error(struct task_struct *task, + struct pt_regs *regs) +{ +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) + return regs->r8; +#endif + + return regs->r10 == -1 ? regs->r8:0; +} + +static inline long syscall_get_return_value(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->r8; +} + +static inline void syscall_set_return_value(struct task_struct *task, + struct pt_regs *regs, + int error, long val) +{ +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) { + regs->r8 = (long) error ? error : val; + return; + } +#endif + + if (error) { + /* error < 0, but ia64 uses > 0 return value */ + regs->r8 = -error; + regs->r10 = -1; + } else { + regs->r8 = val; + regs->r10 = 0; + } +} + +extern void ia64_syscall_get_set_arguments(struct task_struct *task, + struct pt_regs *regs, unsigned int i, unsigned int n, + unsigned long *args, int rw); +static inline void syscall_get_arguments(struct task_struct *task, + struct pt_regs *regs, + unsigned int i, unsigned int n, + unsigned long *args) +{ + BUG_ON(i + n > 6); + +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) { + switch (i + n) { + case 6: + if (!n--) break; + *args++ = regs->r13; + case 5: + if (!n--) break; + *args++ = regs->r15; + case 4: + if (!n--) break; + *args++ = regs->r14; + case 3: + if (!n--) break; + *args++ = regs->r10; + case 2: + if (!n--) break; + *args++ = regs->r9; + case 1: + if (!n--) break; + *args++ = regs->r11; + case 0: + if (!n--) break; + default: + BUG(); + break; + } + + return; + } +#endif + ia64_syscall_get_set_arguments(task, regs, i, n, args, 0); +} + +static inline void syscall_set_arguments(struct task_struct *task, + struct pt_regs *regs, + unsigned int i, unsigned int n, + unsigned long *args) +{ + BUG_ON(i + n > 6); + +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) { + switch (i + n) { + case 6: + if (!n--) break; + regs->r13 = *args++; + case 5: + if (!n--) break; + regs->r15 = *args++; + case 4: + if (!n--) break; + regs->r14 = *args++; + case 3: + if (!n--) break; + regs->r10 = *args++; + case 2: + if (!n--) break; + regs->r9 = *args++; + case 1: + if (!n--) break; + regs->r11 = *args++; + case 0: + if (!n--) break; + } + + return; + } +#endif + ia64_syscall_get_set_arguments(task, regs, i, n, args, 1); +} +#endif /* _ASM_SYSCALL_H */ diff --git a/arch/ia64/include/asm/thread_info.h b/arch/ia64/include/asm/thread_info.h index 7c60fcdd2ef..ae6922626bf 100644 --- a/arch/ia64/include/asm/thread_info.h +++ b/arch/ia64/include/asm/thread_info.h @@ -87,9 +87,6 @@ struct thread_info { #define alloc_task_struct() ((struct task_struct *)__get_free_pages(GFP_KERNEL | __GFP_COMP, KERNEL_STACK_SIZE_ORDER)) #define free_task_struct(tsk) free_pages((unsigned long) (tsk), KERNEL_STACK_SIZE_ORDER) -#define tsk_set_notify_resume(tsk) \ - set_ti_thread_flag(task_thread_info(tsk), TIF_NOTIFY_RESUME) -extern void tsk_clear_notify_resume(struct task_struct *tsk); #endif /* !__ASSEMBLY */ /* |