Doc:Elf:Sections

ELF sections are defined to organize and classify the data: code, data, readonly data, specific data.

Section	Description
.text	This is the standard text section for code program. By default, the linker places the text at 0x8000. This can be overridden with -Ttext option.
.rodata	This is the standard read-only data section. It is placed after the text section by the linker.
.data	This is the standard data section.
.bss	This is the standard bss section. It appears after the data section.
.page0	This is a specific section for the 68HC1x to represent the page 0. It is intended to be used to help in specifying data which are defined in the first 256-bytes (page 0) of the address space. It is placed at address 0 by the linker. It is treated as a .data section.
.eeprom	This is a specific section for the 68HC1x to represent the internal EEPROM.
.install[0-4]	These sections represent some initialization sections. They are used by the GCC startup code. Some of them are for used by applications. During the final link, these sections are merged with the .text section, and are put at beginning. Therefore, they appear at beginning of ROM area. The .install0 is reserved. It initializes the stack pointer. The .install1 is a placeholder for applications. The .install2 is reserved. It initializes the bss and data sections. The .install3 is a placeholder for applications. The .install4 is reserved and invokes the main.
.fini[0-4]	These sections represent some termination sections. They are used by the GCC finish code (exit). Some of them are for used by applications. During the final link, these sections are merged with the .text section. .fini0 and .fini4 are reserved. .fini1 is a placeholder for applications. It can contain code which is executed during exit and before the C++ static destructors. .fini2 is reserved and corresponds to the C++ static destructors. .fini3 is a placeholder for applications. This code is executed after the C++ static destructors are called. The .fini4 is reserved and corresponds to the runtime exit.
.vectors	This is a specific section for the 68HC1x to represent the vectors table. By default the vectors table is located at 0xffc0 and placed at that address by the linker. By using the -defsym vectors_addr=addr linker option, it is possible to set another address for the vectors table. For example, -defsym vectors_addr=0xbfc0 sets the vectors table at 0xbfc0.
.softregs	This is a specific section for the 68HC1x to hold the gcc soft registers. For 68HC11, this section is put during the final link in the .page0 section. For 68HC12, it is put in the .bss section.
others	Several standard sections exists for DWARF-2 debugging info, stack frame unwinding description and so on.