md-trap.hpp File Reference

Go to the source code of this file.

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...

Enumerations
enum	{   TRAP_NullPointerException = 0, TRAP_ArithmeticException = 1, TRAP_ArrayIndexOutOfBoundsException = 2, TRAP_ArrayStoreException = 3,   TRAP_ClassCastException = 4, TRAP_CHECK_EXCEPTION = 5, TRAP_COMPILER = 6, TRAP_COUNTDOWN = 7,   TRAP_AbstractMethodError = 8, TRAP_THROW = 9, TRAP_NAT_EXCEPTION = 10, TRAP_END,   TRAP_PATCHER = 99 }

Macro Definition Documentation

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

Value:

do { \
        (xpc) = (void*) (((uintptr_t) (ra)) - 8); \
    } while(0)

Macro to fixup a compiler stub.

The XPC is the RA minus 8, because the RA points to two instructions after the call.

Definition at line 69 of file md-trap.hpp.

#define TRAP_INSTRUCTION_IS_LOAD   1

Trap number defines.

On this architecture (mips) 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_COMPILER
TRAP_COUNTDOWN
TRAP_AbstractMethodError
TRAP_THROW
TRAP_NAT_EXCEPTION
TRAP_END
TRAP_PATCHER

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