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In advanced mode the operand is a 32-bit longword operand, providing a 32-bit branch
address. The upper 8 bits of these 32 bits are a reserved area that is regarded as H'00. Branch
addresses can be stored in the area from H'00000000 to H'000000FF. Note that the first part of
this range is also used for the exception-handling vector table.
• Stack Structure
In advanced mode, when the program counter (PC) is pushed onto the stack in a subroutine
call, and the PC, condition-code register (CCR), and extended control register (EXR) are
pushed onto the stack in exception handling, they are stored as shown in figure 2.4. EXR is not
pushed onto the stack in interrupt control mode 0. For details, see section 4, Exception
Handling.
SP
Notes: 1. When EXR is not used, it is not stored on the stack.
2. SP when EXR is not used.
3. Ignored when returning.
Reserved
PC
(24 bits)
(a) Subroutine Branch
Figure 2.4 Stack Structure in Advanced Mode
SP
EXR*
Reserved*
2
*
(SP
)
CCR
PC
(24 bits)
(b) Exception Handling
Rev. 1.00, 09/03, page 21 of 704
1
, *
1
3
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