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c93bf928fe
Always we use type unsigned long to format the ip address, since the value of ip address is never the negative. This patch uses type unsigned long, instead of long, to format the ip address. The code is more clearly to be viewed by using type unsigned long, although it is correct by using either unsigned long or long. Link: http://lkml.kernel.org/r/1436694744-16747-1-git-send-email-mhuang@redhat.com Cc: Minfei Huang <mnfhuang@gmail.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Minfei Huang <mnfhuang@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
#ifndef _ASM_POWERPC_FTRACE
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#define _ASM_POWERPC_FTRACE
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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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#ifdef __ASSEMBLY__
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/* Based off of objdump optput from glibc */
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#define MCOUNT_SAVE_FRAME \
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stwu r1,-48(r1); \
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stw r3, 12(r1); \
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stw r4, 16(r1); \
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stw r5, 20(r1); \
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stw r6, 24(r1); \
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mflr r3; \
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lwz r4, 52(r1); \
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mfcr r5; \
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stw r7, 28(r1); \
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stw r8, 32(r1); \
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stw r9, 36(r1); \
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stw r10,40(r1); \
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stw r3, 44(r1); \
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stw r5, 8(r1)
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#define MCOUNT_RESTORE_FRAME \
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lwz r6, 8(r1); \
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lwz r0, 44(r1); \
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lwz r3, 12(r1); \
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mtctr r0; \
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lwz r4, 16(r1); \
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mtcr r6; \
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lwz r5, 20(r1); \
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lwz r6, 24(r1); \
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lwz r0, 52(r1); \
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lwz r7, 28(r1); \
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lwz r8, 32(r1); \
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mtlr r0; \
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lwz r9, 36(r1); \
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lwz r10,40(r1); \
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addi r1, r1, 48
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#else /* !__ASSEMBLY__ */
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extern void _mcount(void);
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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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/* reloction of mcount call site is the same as the address */
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return addr;
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}
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struct dyn_arch_ftrace {
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struct module *mod;
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};
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#endif /* CONFIG_DYNAMIC_FTRACE */
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#endif /* __ASSEMBLY__ */
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#endif
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#if defined(CONFIG_FTRACE_SYSCALLS) && defined(CONFIG_PPC64) && !defined(__ASSEMBLY__)
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#if !defined(_CALL_ELF) || _CALL_ELF != 2
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#define ARCH_HAS_SYSCALL_MATCH_SYM_NAME
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static inline bool arch_syscall_match_sym_name(const char *sym, const char *name)
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{
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/*
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* Compare the symbol name with the system call name. Skip the .sys or .SyS
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* prefix from the symbol name and the sys prefix from the system call name and
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* just match the rest. This is only needed on ppc64 since symbol names on
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* 32bit do not start with a period so the generic function will work.
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*/
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return !strcmp(sym + 4, name + 3);
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}
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#endif
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#endif /* CONFIG_FTRACE_SYSCALLS && CONFIG_PPC64 && !__ASSEMBLY__ */
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#endif /* _ASM_POWERPC_FTRACE */
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