diff options
Diffstat (limited to 'arch/ia64/include/asm/syscall.h')
| -rw-r--r-- | arch/ia64/include/asm/syscall.h | 89 |
1 files changed, 80 insertions, 9 deletions
diff --git a/arch/ia64/include/asm/syscall.h b/arch/ia64/include/asm/syscall.h index 3fd4fa6c48d..2f758a42f94 100644 --- a/arch/ia64/include/asm/syscall.h +++ b/arch/ia64/include/asm/syscall.h @@ -19,24 +19,35 @@ static inline long syscall_get_nr(struct task_struct *task, struct pt_regs *regs) { - BUG_ON(IS_IA32_PROCESS(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) { - BUG_ON(IS_IA32_PROCESS(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) { - BUG_ON(IS_IA32_PROCESS(regs)); +#ifdef CONFIG_IA32_SUPPORT + if (IS_IA32_PROCESS(regs)) + return regs->r8; +#endif return regs->r10 == -1 ? regs->r8:0; } @@ -44,8 +55,6 @@ static inline long syscall_get_error(struct task_struct *task, static inline long syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) { - BUG_ON(IS_IA32_PROCESS(regs)); - return regs->r8; } @@ -53,7 +62,12 @@ static inline void syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, int error, long val) { - BUG_ON(IS_IA32_PROCESS(regs)); +#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 */ @@ -73,9 +87,39 @@ static inline void syscall_get_arguments(struct task_struct *task, unsigned int i, unsigned int n, unsigned long *args) { - BUG_ON(IS_IA32_PROCESS(regs)); 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); } @@ -84,9 +128,36 @@ static inline void syscall_set_arguments(struct task_struct *task, unsigned int i, unsigned int n, unsigned long *args) { - BUG_ON(IS_IA32_PROCESS(regs)); 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 */ |