forked from luck/tmp_suning_uos_patched
MIPS: Provide arch_syscall_addr.
The generic version is wrong for MIPS. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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16
arch/mips/include/asm/syscall.h
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16
arch/mips/include/asm/syscall.h
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@ -0,0 +1,16 @@
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2012 Ralf Baechle <ralf@linux-mips.org>
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*/
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#ifndef __ASM_MIPS_SYSCALL_H
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#define __ASM_MIPS_SYSCALL_H
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extern const unsigned long sys_call_table[];
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extern const unsigned long sys32_call_table[];
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extern const unsigned long sysn32_call_table[];
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#endif /* __ASM_MIPS_SYSCALL_H */
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@ -35,6 +35,7 @@ obj-$(CONFIG_STACKTRACE) += stacktrace.o
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obj-$(CONFIG_MODULES) += mips_ksyms.o module.o
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obj-$(CONFIG_MODULES_USE_ELF_RELA) += module-rela.o
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obj-$(CONFIG_FTRACE_SYSCALLS) += ftrace.o
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obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o
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obj-$(CONFIG_CPU_R4K_FPU) += r4k_fpu.o r4k_switch.o
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@ -11,11 +11,14 @@
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#include <linux/uaccess.h>
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#include <linux/init.h>
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#include <linux/ftrace.h>
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#include <linux/syscalls.h>
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#include <asm/asm.h>
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#include <asm/asm-offsets.h>
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#include <asm/cacheflush.h>
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#include <asm/syscall.h>
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#include <asm/uasm.h>
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#include <asm/unistd.h>
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#include <asm-generic/sections.h>
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@ -364,3 +367,33 @@ void prepare_ftrace_return(unsigned long *parent_ra_addr, unsigned long self_ra,
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WARN_ON(1);
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}
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#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
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#ifdef CONFIG_FTRACE_SYSCALLS
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#ifdef CONFIG_32BIT
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unsigned long __init arch_syscall_addr(int nr)
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{
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return (unsigned long)sys_call_table[nr - __NR_O32_Linux];
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}
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#endif
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#ifdef CONFIG_64BIT
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unsigned long __init arch_syscall_addr(int nr)
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{
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#ifdef CONFIG_MIPS32_N32
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if (nr >= __NR_N32_Linux && nr <= __NR_N32_Linux + __NR_N32_Linux_syscalls)
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return (unsigned long)sysn32_call_table[(nr - __NR_N32_Linux) * 2];
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#endif
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if (nr >= __NR_64_Linux && nr <= __NR_64_Linux + __NR_64_Linux_syscalls)
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return (unsigned long)sys_call_table[nr - __NR_64_Linux];
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#ifdef CONFIG_MIPS32_O32
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if (nr >= __NR_O32_Linux && nr <= __NR_O32_Linux + __NR_O32_Linux_syscalls)
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return (unsigned long)sys32_call_table[nr - __NR_O32_Linux];
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#endif
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return (unsigned long) &sys_ni_syscall;
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}
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#endif
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#endif /* CONFIG_FTRACE_SYSCALLS */
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