md-trap.hpp File Reference

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Macros
#define	TRAP_INSTRUCTION_IS_LOAD   1
	Trap number defines. More...
#define	MD_TRAP_COMPILER_FIXUP(xpc, ra, sp, pv)
	Macro to fixup a compiler stub. More...
#define	ALIGN_PATCHER_TRAP
	Align traps so they don't cross cache line boundaries. More...

Enumerations
enum	{   TRAP_NullPointerException = 0, TRAP_ArithmeticException = 1, TRAP_ArrayIndexOutOfBoundsException = 2, TRAP_ArrayStoreException = 3,   TRAP_ClassCastException = 4, TRAP_CHECK_EXCEPTION = 5, TRAP_PATCHER = 6, TRAP_COMPILER = 7,   TRAP_COUNTDOWN = 8, TRAP_AbstractMethodError = 9, TRAP_THROW = 10, TRAP_NAT_EXCEPTION = 11,   TRAP_END }

Functions
void	emit_patcher_alignment (codegendata *cd)

Macro Definition Documentation

#define ALIGN_PATCHER_TRAP

Align traps so they don't cross cache line boundaries.

Definition at line 84 of file md-trap.hpp.

#define MD_TRAP_COMPILER_FIXUP	(		xpc,
			ra,
			sp,
			pv
	)

Value:

do { \
        (pv)  = (xpc); \
        (ra)  = md_stacktrace_get_returnaddress((sp), 0); \
        (sp)  = (void*) (((uintptr_t) (sp)) + 1 * SIZEOF_VOID_P); \
        (xpc) = (void*) (((uintptr_t) (ra)) - 2); \
    } while(0)

Macro to fixup a compiler stub.

PV : The PV from the compiler stub is equal to the XPC. RA : We use a framesize of zero here because the call pushed the return addres onto the stack. SP : Skip the RA on the stack. XPC: The XPC is the RA minus 2, because the RA points to the instruction after the call.

Definition at line 72 of file md-trap.hpp.

#define TRAP_INSTRUCTION_IS_LOAD   1

Trap number defines.

On this architecture (i386) the trap numbers are used as load displacements and thus must not be 4- or 8-byte aligned.

NOTE: In trap_init() we have a check whether the offset of java_arrayheader.data[0] is greater than the largest displacement defined below. Otherwise normal array loads/stores could trigger an exception.

Definition at line 44 of file md-trap.hpp.

Enumeration Type Documentation

anonymous enum

Enumerator
TRAP_NullPointerException
TRAP_ArithmeticException
TRAP_ArrayIndexOutOfBoundsException
TRAP_ArrayStoreException
TRAP_ClassCastException
TRAP_CHECK_EXCEPTION
TRAP_PATCHER
TRAP_COMPILER
TRAP_COUNTDOWN
TRAP_AbstractMethodError
TRAP_THROW
TRAP_NAT_EXCEPTION
TRAP_END

Definition at line 46 of file md-trap.hpp.

Function Documentation

void emit_patcher_alignment

(

codegendata *

cd

)

Definition at line 578 of file emit.cpp.