1 /* src/vm/jit/x86_64/md.h - machine dependent x86_64 functions
3 Copyright (C) 1996-2005, 2006, 2007, 2008, 2009
4 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
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26 #ifndef _VM_JIT_X86_64_MD_H
27 #define _VM_JIT_X86_64_MD_H
34 #include "vm/jit/codegen-common.hpp"
35 #include "vm/jit/methodtree.h"
38 /* inline functions ***********************************************************/
41 * Returns the size (in bytes) of the current stackframe, specified by
42 * the passed codeinfo structure.
44 inline static int32_t md_stacktrace_get_framesize(codeinfo* code)
46 // Check for the asm_vm_call_method special case.
50 // On x86_64 we use 8-byte stackslots.
51 return code->stackframesize * 8;
55 /* md_stacktrace_get_returnaddress *********************************************
57 Returns the return address of the current stackframe, specified by
58 the passed stack pointer and the stack frame size.
60 *******************************************************************************/
62 inline static void *md_stacktrace_get_returnaddress(void *sp, int32_t stackframesize)
66 /* On x86_64 the return address is above the current stack
69 ra = *((void **) (((uintptr_t) sp) + stackframesize));
75 /* md_codegen_get_pv_from_pc ***************************************************
77 On this architecture this is just a wrapper to methodtree_find.
79 *******************************************************************************/
81 inline static void *md_codegen_get_pv_from_pc(void *ra)
85 /* Get the start address of the function which contains this
86 address from the method tree. */
88 pv = methodtree_find(ra);
94 /* md_cacheflush ***************************************************************
96 Calls the system's function to flush the instruction and data
99 *******************************************************************************/
101 inline static void md_cacheflush(void* addr, int nbytes)
103 // Compiler optimization barrier (see PR97).
104 __asm__ __volatile__ ("" : : : "memory");
108 /* md_icacheflush **************************************************************
110 Calls the system's function to flush the instruction cache.
112 *******************************************************************************/
114 inline static void md_icacheflush(void* addr, int nbytes)
116 // Compiler optimization barrier (see PR97).
117 __asm__ __volatile__ ("" : : : "memory");
121 /* md_dcacheflush **************************************************************
123 Calls the system's function to flush the data cache.
125 *******************************************************************************/
127 inline static void md_dcacheflush(void* addr, int nbytes)
129 // Compiler optimization barrier (see PR97).
130 __asm__ __volatile__ ("" : : : "memory");
134 /* md_get_cycle_count **********************************************************
136 Get the current time-stamp counter from the CPU.
138 *******************************************************************************/
140 inline static uint64_t md_get_cycle_count()
144 // Get current cycles count from the CPU.
145 __asm__ __volatile__ ("rdtsc" : "=A" (cycles));
150 #endif /* _VM_JIT_X86_64_MD_H */
154 * These are local overrides for various environment variables in Emacs.
155 * Please do not remove this and leave it at the end of the file, where
156 * Emacs will automagically detect them.
157 * ---------------------------------------------------------------------
160 * indent-tabs-mode: t
164 * vim:noexpandtab:sw=4:ts=4: