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Differential D18542 Diff 51972 head/sys/cddl/dev/dtrace/amd64/dtrace_isa.c

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head/sys/cddl/dev/dtrace/amd64/dtrace_isa.c

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#include <sys/kernel.h> #include <sys/kernel.h>
#include <sys/stack.h> #include <sys/stack.h>
#include <sys/pcpu.h> #include <sys/pcpu.h>
#include <machine/frame.h> #include <machine/frame.h>
#include <machine/md_var.h> #include <machine/md_var.h>
#include <machine/reg.h> #include <machine/reg.h>
#include <machine/stack.h> #include <machine/stack.h>
#include <x86/ifunc.h>
#include <vm/vm.h> #include <vm/vm.h>
#include <vm/vm_param.h> #include <vm/vm_param.h>
#include <vm/pmap.h> #include <vm/pmap.h>
#include "regset.h" #include "regset.h"
uint8_t dtrace_fuword8_nocheck(void *); uint8_t dtrace_fuword8_nocheck(void *);
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dtrace_fuword64(void *uaddr) dtrace_fuword64(void *uaddr)
{ {
if ((uintptr_t)uaddr > VM_MAXUSER_ADDRESS) { if ((uintptr_t)uaddr > VM_MAXUSER_ADDRESS) {
DTRACE_CPUFLAG_SET(CPU_DTRACE_BADADDR); DTRACE_CPUFLAG_SET(CPU_DTRACE_BADADDR);
cpu_core[curcpu].cpuc_dtrace_illval = (uintptr_t)uaddr; cpu_core[curcpu].cpuc_dtrace_illval = (uintptr_t)uaddr;
return (0); return (0);
} }
return (dtrace_fuword64_nocheck(uaddr)); return (dtrace_fuword64_nocheck(uaddr));
}
/*
* ifunc resolvers for SMAP support
*/
void dtrace_copy_nosmap(uintptr_t, uintptr_t, size_t);
void dtrace_copy_smap(uintptr_t, uintptr_t, size_t);
DEFINE_IFUNC(, void, dtrace_copy, (uintptr_t, uintptr_t, size_t), static)
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
dtrace_copy_smap : dtrace_copy_nosmap);
}
void dtrace_copystr_nosmap(uintptr_t, uintptr_t, size_t, volatile uint16_t *);
void dtrace_copystr_smap(uintptr_t, uintptr_t, size_t, volatile uint16_t *);
DEFINE_IFUNC(, void, dtrace_copystr, (uintptr_t, uintptr_t, size_t,
volatile uint16_t *), static)
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
dtrace_copystr_smap : dtrace_copystr_nosmap);
}
uintptr_t dtrace_fulword_nosmap(void *);
uintptr_t dtrace_fulword_smap(void *);
DEFINE_IFUNC(, uintptr_t, dtrace_fulword, (void *), static)
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
dtrace_fulword_smap : dtrace_fulword_nosmap);
}
uint8_t dtrace_fuword8_nocheck_nosmap(void *);
uint8_t dtrace_fuword8_nocheck_smap(void *);
DEFINE_IFUNC(, uint8_t, dtrace_fuword8_nocheck, (void *), static)
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
dtrace_fuword8_nocheck_smap : dtrace_fuword8_nocheck_nosmap);
}
uint16_t dtrace_fuword16_nocheck_nosmap(void *);
uint16_t dtrace_fuword16_nocheck_smap(void *);
DEFINE_IFUNC(, uint16_t, dtrace_fuword16_nocheck, (void *), static)
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
dtrace_fuword16_nocheck_smap : dtrace_fuword16_nocheck_nosmap);
}
uint32_t dtrace_fuword32_nocheck_nosmap(void *);
uint32_t dtrace_fuword32_nocheck_smap(void *);
DEFINE_IFUNC(, uint32_t, dtrace_fuword32_nocheck, (void *), static)
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
dtrace_fuword32_nocheck_smap : dtrace_fuword32_nocheck_nosmap);
}
uint64_t dtrace_fuword64_nocheck_nosmap(void *);
uint64_t dtrace_fuword64_nocheck_smap(void *);
DEFINE_IFUNC(, uint64_t, dtrace_fuword64_nocheck, (void *), static)
{
return ((cpu_stdext_feature & CPUID_STDEXT_SMAP) != 0 ?
dtrace_fuword64_nocheck_smap : dtrace_fuword64_nocheck_nosmap);
} }