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90 lines
2.1 KiB
90 lines
2.1 KiB
/* |
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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 for |
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* more details. |
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* |
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* Copyright (C) 2009 DSLab, Lanzhou University, China |
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* Author: Wu Zhangjin <[email protected]> |
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*/ |
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#ifndef _ASM_MIPS_FTRACE_H |
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#define _ASM_MIPS_FTRACE_H |
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#ifdef CONFIG_FUNCTION_TRACER |
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#define MCOUNT_ADDR ((unsigned long)(_mcount)) |
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#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */ |
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#ifndef __ASSEMBLY__ |
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extern void _mcount(void); |
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#define mcount _mcount |
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#define safe_load(load, src, dst, error) \ |
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do { \ |
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asm volatile ( \ |
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"1: " load " %[tmp_dst], 0(%[tmp_src])\n" \ |
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" li %[tmp_err], 0\n" \ |
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"2: .insn\n" \ |
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\ |
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".section .fixup, \"ax\"\n" \ |
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"3: li %[tmp_err], 1\n" \ |
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" j 2b\n" \ |
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".previous\n" \ |
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\ |
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".section\t__ex_table,\"a\"\n\t" \ |
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STR(PTR) "\t1b, 3b\n\t" \ |
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".previous\n" \ |
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\ |
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: [tmp_dst] "=&r" (dst), [tmp_err] "=r" (error)\ |
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: [tmp_src] "r" (src) \ |
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: "memory" \ |
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); \ |
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} while (0) |
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#define safe_store(store, src, dst, error) \ |
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do { \ |
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asm volatile ( \ |
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"1: " store " %[tmp_src], 0(%[tmp_dst])\n"\ |
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" li %[tmp_err], 0\n" \ |
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"2: .insn\n" \ |
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\ |
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".section .fixup, \"ax\"\n" \ |
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"3: li %[tmp_err], 1\n" \ |
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" j 2b\n" \ |
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".previous\n" \ |
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\ |
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".section\t__ex_table,\"a\"\n\t"\ |
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STR(PTR) "\t1b, 3b\n\t" \ |
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".previous\n" \ |
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\ |
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: [tmp_err] "=r" (error) \ |
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: [tmp_dst] "r" (dst), [tmp_src] "r" (src)\ |
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: "memory" \ |
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); \ |
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} while (0) |
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#define safe_load_code(dst, src, error) \ |
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safe_load(STR(lw), src, dst, error) |
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#define safe_store_code(src, dst, error) \ |
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safe_store(STR(sw), src, dst, error) |
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#define safe_load_stack(dst, src, error) \ |
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safe_load(STR(PTR_L), src, dst, error) |
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#define safe_store_stack(src, dst, error) \ |
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safe_store(STR(PTR_S), src, dst, error) |
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#ifdef CONFIG_DYNAMIC_FTRACE |
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static inline unsigned long ftrace_call_adjust(unsigned long addr) |
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{ |
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return addr; |
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} |
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struct dyn_arch_ftrace { |
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}; |
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#endif /* CONFIG_DYNAMIC_FTRACE */ |
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#endif /* __ASSEMBLY__ */ |
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#endif /* CONFIG_FUNCTION_TRACER */ |
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#endif /* _ASM_MIPS_FTRACE_H */
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