HPCToolkit
_mcontext.h
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46 
47 #ifndef __MCONTEXT_H
48 #define __MCONTEXT_H
49 
50 #include <ucontext.h>
51 #include <sys/ucontext.h>
52 
53 #define GET_MCONTEXT(context) (&((ucontext_t *)context)->uc_mcontext)
54 
55 //-------------------------------------------------------------------------
56 // define macros for extracting pc, bp, and sp from machine contexts. these
57 // macros bridge differences between machine context representations for
58 // various architectures
59 //-------------------------------------------------------------------------
60 
61 #ifdef REG_RIP
62 #define REG_INST_PTR REG_RIP
63 #define REG_BASE_PTR REG_RBP
64 #define REG_STACK_PTR REG_RSP
65 #else
66 
67 #ifdef REG_EIP
68 #define REG_INST_PTR REG_EIP
69 #define REG_BASE_PTR REG_EBP
70 #define REG_STACK_PTR REG_ESP
71 #else
72 #ifdef REG_IP
73 #define REG_INST_PTR REG_IP
74 #define REG_BASE_PTR REG_BP
75 #define REG_STACK_PTR REG_SP
76 #endif
77 #endif
78 #endif
79 
80 
81 #define MCONTEXT_REG(mctxt, reg) ((mctxt)->gregs[reg])
82 
83 #define LV_MCONTEXT_PC(mctxt) MCONTEXT_REG(mctxt, REG_INST_PTR)
84 #define LV_MCONTEXT_BP(mctxt) MCONTEXT_REG(mctxt, REG_BASE_PTR)
85 #define LV_MCONTEXT_SP(mctxt) MCONTEXT_REG(mctxt, REG_STACK_PTR)
86 
87 #define MCONTEXT_PC(mctxt) ((void *) MCONTEXT_REG(mctxt, REG_INST_PTR))
88 #define MCONTEXT_BP(mctxt) ((void **) MCONTEXT_REG(mctxt, REG_BASE_PTR))
89 #define MCONTEXT_SP(mctxt) ((void **) MCONTEXT_REG(mctxt, REG_STACK_PTR))
90 
91 #endif // __MCONTEXT_H