Linkage Kit Manual V6-00 - Fujitsu

5.6 Automatically Locating Sections
5.6.2 Automatically Locating Sections when -AL 2 is Specified
If -AL 2 is specified, a linker automatically locates sections without location
specification into an available space of area.
Linker determines into which the location place of a section shall be made between
ROM area or RAM area based on the type of a section in that case.
Section 5.6.2 describes the location destinations for each section type and the order of
determining location addresses.
Figure 5.6-4 shows an example of location when -AL 2 is specified.
■ Section Types and Location Destinations
If -AL 2 is specified, a linker automatically locates sections without location specifications. At this time,
the linker determines their location destinations (areas) according to their section types as shown in Table
5.6-4.
Table 5.6-4 Section Types and Location Destinations
Location destination
ROM area
(specified in -ro)
RAM area
(specified in -ra)
Section type
CODE
CONST
IO
DATA
STACK
■ Determining Location Addresses
If -AL 2 is specified, a linker determines the section location addresses in the order shown in Table 5.6-5.
As shown in Table 5.6-5, the order specified by the user is prioritized to the automatic location.
A linker always searches a place to locate a section, starting from low-order addresses.
Table 5.6-5 Section Location Destinations
Order Section to be processed Location destination and method
1 Section with the ABS attribute Located at the address provided with the section
2
3
Section with a specified location
address in the -sc option, e.g., as
"-sc Section=0x0100"
Section with a specified location
area in the -sc option as "-sc
Section=ROM"
Located at the specified address
In the specified area, the linker searches a place where it
can locate the section without overlapping with another
section, then locates it.
4 Section without a specified location
The linker determines the location area according to
Table 5.6-4. Then, in the determined area, the linker
searches a place where it can locate the section without
overlapping with another section. The linker then
locates it.
PART II LINKER 69