We need to do a few things differently if we are to support
a virtual memory map, i.e. CONFIG_MMU where CONFIG_KERNEL_VM_BASE
is not the same as CONFIG_SRAM_BASE_ADDRESS.
- All sections must be specified with a VMA and LMA, where
VMA is the virtual address and LMA is the physical memory
location.
- All sections must be specified with ALIGN_WITH_INPUT to
keep VMAs and LMAs synchronized
To do this, the existing linker macros need some adjustment:
- GROUP_LINK_IN undefined when CONFIG_KERNEL_VM_BASE is not
the same as CONFIG_SRAM_BASE_ADDRESS.
- New macro GROUP_ROM_LINK_IN for text/rodata sections
- New macro GROUP_NOLOAD_LINK_IN for bss/noinit sections
- Implicit ALIGN_WITH_INPUT for all sections
GROUP_FOLLOWS_AT is unused anywhere in the kernel for years
now and has been removed.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Include .gcc_except_table (sub-)sections in linker files to support C++
with exceptions enabled. If these sections are not mapped warnings will
be generated for orphaned sections at link time.
Signed-off-by: Jan Van Winkel <jan.van_winkel@dxplore.eu>
