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* frv: FRV: Implement new-style ptrace FRV: Don't turn on TIF_SYSCALL_TRACE unconditionally in syscall prologue FRV: Implement TIF_NOTIFY_RESUME FRV: Remove in-kernel strace code FRV: BUG to BUG_ON changes FRV: bitops: Change the bitmap index from int to unsigned long * mn10300: MN10300: Add utrace/tracehooks support MN10300: Don't set the dirty bit in the DTLB entries in the TLB-miss handler
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| Original file line number | Diff line number | Diff line change |
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@@ -6,6 +6,7 @@ config FRV | |
| bool | ||
| default y | ||
| select HAVE_IDE | ||
| select HAVE_ARCH_TRACEHOOK | ||
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| config ZONE_DMA | ||
| bool | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| /* syscall parameter access functions | ||
| * | ||
| * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved. | ||
| * Written by David Howells (dhowells@redhat.com) | ||
| * | ||
| * This program is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU General Public Licence | ||
| * as published by the Free Software Foundation; either version | ||
| * 2 of the Licence, or (at your option) any later version. | ||
| */ | ||
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| #ifndef _ASM_SYSCALL_H | ||
| #define _ASM_SYSCALL_H | ||
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| #include <linux/err.h> | ||
| #include <asm/ptrace.h> | ||
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| /* | ||
| * Get the system call number or -1 | ||
| */ | ||
| static inline long syscall_get_nr(struct task_struct *task, | ||
| struct pt_regs *regs) | ||
| { | ||
| return regs->syscallno; | ||
| } | ||
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| /* | ||
| * Restore the clobbered GR8 register | ||
| * (1st syscall arg was overwritten with syscall return or error) | ||
| */ | ||
| static inline void syscall_rollback(struct task_struct *task, | ||
| struct pt_regs *regs) | ||
| { | ||
| regs->gr8 = regs->orig_gr8; | ||
| } | ||
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| /* | ||
| * See if the syscall return value is an error, returning it if it is and 0 if | ||
| * not | ||
| */ | ||
| static inline long syscall_get_error(struct task_struct *task, | ||
| struct pt_regs *regs) | ||
| { | ||
| return IS_ERR_VALUE(regs->gr8) ? regs->gr8 : 0; | ||
| } | ||
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| /* | ||
| * Get the syscall return value | ||
| */ | ||
| static inline long syscall_get_return_value(struct task_struct *task, | ||
| struct pt_regs *regs) | ||
| { | ||
| return regs->gr8; | ||
| } | ||
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| /* | ||
| * Set the syscall return value | ||
| */ | ||
| static inline void syscall_set_return_value(struct task_struct *task, | ||
| struct pt_regs *regs, | ||
| int error, long val) | ||
| { | ||
| if (error) | ||
| regs->gr8 = -error; | ||
| else | ||
| regs->gr8 = val; | ||
| } | ||
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| /* | ||
| * Retrieve the system call arguments | ||
| */ | ||
| static inline void syscall_get_arguments(struct task_struct *task, | ||
| struct pt_regs *regs, | ||
| unsigned int i, unsigned int n, | ||
| unsigned long *args) | ||
| { | ||
| /* | ||
| * Do this simply for now. If we need to start supporting | ||
| * fetching arguments from arbitrary indices, this will need some | ||
| * extra logic. Presently there are no in-tree users that depend | ||
| * on this behaviour. | ||
| */ | ||
| BUG_ON(i); | ||
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| /* Argument pattern is: GR8, GR9, GR10, GR11, GR12, GR13 */ | ||
| switch (n) { | ||
| case 6: args[5] = regs->gr13; | ||
| case 5: args[4] = regs->gr12; | ||
| case 4: args[3] = regs->gr11; | ||
| case 3: args[2] = regs->gr10; | ||
| case 2: args[1] = regs->gr9; | ||
| case 1: args[0] = regs->gr8; | ||
| break; | ||
| default: | ||
| BUG(); | ||
| } | ||
| } | ||
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| /* | ||
| * Alter the system call arguments | ||
| */ | ||
| static inline void syscall_set_arguments(struct task_struct *task, | ||
| struct pt_regs *regs, | ||
| unsigned int i, unsigned int n, | ||
| const unsigned long *args) | ||
| { | ||
| /* Same note as above applies */ | ||
| BUG_ON(i); | ||
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| switch (n) { | ||
| case 6: regs->gr13 = args[5]; | ||
| case 5: regs->gr12 = args[4]; | ||
| case 4: regs->gr11 = args[3]; | ||
| case 3: regs->gr10 = args[2]; | ||
| case 2: regs->gr9 = args[1]; | ||
| case 1: regs->gr8 = args[0]; | ||
| break; | ||
| default: | ||
| BUG(); | ||
| } | ||
| } | ||
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| #endif /* _ASM_SYSCALL_H */ |
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