diff options
| author | Harald Welte <laforge@gnumonks.org> | 2010-06-24 11:46:47 +0200 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2010-06-24 11:46:47 +0200 |
| commit | 7419d6559f22ec7c364e7bdedd5e179d34f79775 (patch) | |
| tree | c72ce4245b22e65e484fde4a4b391f5317996812 /src/target/firmware/board/common | |
| parent | 15c584ef625111ae25cf733a9b5715f9e3e6ed26 (diff) | |
[firmware] Add support for __attribute__ ((constructor))
We modify the linker scripts to include the .ctors and .dtors sections
and add some code to actually call them before we jump to the main()
function.
Diffstat (limited to 'src/target/firmware/board/common')
| -rw-r--r-- | src/target/firmware/board/common/compal_osmoload.lds | 13 | ||||
| -rw-r--r-- | src/target/firmware/board/common/compal_ramload.lds | 13 | ||||
| -rw-r--r-- | src/target/firmware/board/common/compal_ramload_start.S | 7 |
3 files changed, 33 insertions, 0 deletions
diff --git a/src/target/firmware/board/common/compal_osmoload.lds b/src/target/firmware/board/common/compal_osmoload.lds index d2d96d3a..6f6a9679 100644 --- a/src/target/firmware/board/common/compal_osmoload.lds +++ b/src/target/firmware/board/common/compal_osmoload.lds @@ -27,6 +27,19 @@ SECTIONS KEEP(*(.text.exceptions)) * (.text.exceptions) . = ALIGN(4); + + /* constructors and destructors */ + . = ALIGN(4); + __CTOR_LIST__ = .; + LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2) + *(SORT(.ctors)) + LONG(0) /* end of list */ + __CTOR_END__ = .; + __DTOR_LIST__ = .; + LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2) + *(SORT(.dtors)) + LONG(0) /* end of list */ + __DTOR_END__ = .; } > LRAM PROVIDE(_exceptions = LOADADDR(.text.exceptions)); diff --git a/src/target/firmware/board/common/compal_ramload.lds b/src/target/firmware/board/common/compal_ramload.lds index 65a1baa7..1ea782ed 100644 --- a/src/target/firmware/board/common/compal_ramload.lds +++ b/src/target/firmware/board/common/compal_ramload.lds @@ -43,6 +43,19 @@ SECTIONS /* gcc voodoo */ *(.glue_7t) *(.glue_7) *(.vfp11_veneer) *(.v4_bx) . = ALIGN(4); + + /* constructors and destructors */ + . = ALIGN(4); + __CTOR_LIST__ = .; + LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2) + *(SORT(.ctors)) + LONG(0) /* end of list */ + __CTOR_END__ = .; + __DTOR_LIST__ = .; + LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2) + *(SORT(.dtors)) + LONG(0) /* end of list */ + __DTOR_END__ = .; } > LRAM PROVIDE(_text_start = LOADADDR(.text)); PROVIDE(_text_end = LOADADDR(.text) + SIZEOF(.text)); diff --git a/src/target/firmware/board/common/compal_ramload_start.S b/src/target/firmware/board/common/compal_ramload_start.S index 8c5d2cc6..c89c881c 100644 --- a/src/target/firmware/board/common/compal_ramload_start.S +++ b/src/target/firmware/board/common/compal_ramload_start.S @@ -56,6 +56,11 @@ _start: @ldr r0, =0xfffffe00 @bl memdump + /* call constructor functions */ + ldr r0, _ctor_list + ldr r1, _ctor_end + bl do_global_ctors + /* jump to main */ ldr pc, _jump_main @@ -64,6 +69,8 @@ _end: b _end b _start _jump_main: .word main +_ctor_list: .word __CTOR_LIST__ +_ctor_end: .word __CTOR_END__ /* handler for all kinds of aborts */ handle_abort: |