The _fdata symbol in MIPS linker scripts is aligned to a 16-byte
boundary. The ALIGN function does not implicitly update current
location counter. If sections positioned after the assignment
do not have the same natural alignment as the ALIGN function then
the start of the section group will not coincide with the value
of the symbol.
Given the linker command sequence:
symbol = ALIGN (NN);
(.section*)
where the idiom implies a desire to mark the beginning of .section
with symbol, there must be an assignment to the location counter
between the assignment to symbol and the .section pattern.
libgloss/
* mips/array.ld: Update the location counter to match _fdata.
* mips/cfe.ld: Likewise.
* mips/ddb-kseg0.ld: Likewise.
* mips/ddb.ld: Likewise.
* mips/dve.ld: Likewise.
* mips/idt.ld: Likewise.
* mips/idt32.ld: Likewise.
* mips/idt64.ld: Likewise.
* mips/idtecoff.ld: Likewise.
* mips/jmr3904app-java.ld: Likewise.
* mips/jmr3904app.ld: Likewise.
* mips/jmr3904dram-java.ld: Likewise.
* mips/jmr3904dram.ld: Likewise.
* mips/lsi.ld: Likewise.
* mips/mti32.ld: Likewise.
* mips/mti64.ld: Likewise.
* mips/mti64_64.ld: Likewise.
* mips/mti64_n32.ld: Likewise.
* mips/nullmon.ld: Likewise.
* mips/pmon.ld: Likewise.
* mips/sde32.ld: Likewise.
* mips/sde64.ld: Likewise.
The compiler driver positions the linker script at the end of the linker
command-line, after crtend.o. As a result, any INPUT objects and archive
GROUPs introduced by the linker script are placed after crtend.o and the
end-of-frame marker provided by crtend.o ends up in between .eh_frames
instead of being at the end.
This has always been a problem, but a binutils update to clean-up
redundant NULL markers in .eh_frame exposes it as a execution failure in
exception-handling tests. This patch re-orders .eh_frames in all
MIPS linker scripts so that the one from crtend.o is always placed last.
libgloss/
* mips/array.ld: Re-order to place .eh_frame from crtend.o
after all other .eh_frame sections.
* mips/cfe.ld: Likewise.
* mips/ddb-kseg0.ld: Likewise.
* mips/ddb.ld: Likewise.
* mips/dve.ld: Likewise.
* mips/idt.ld: Likewise.
* mips/idt32.ld: Likewise.
* mips/idt64.ld: Likewise.
* mips/jmr3904app.ld: Likewise.
* mips/lsi.ld: Likewise.
* mips/mti32.ld: Likewise.
* mips/mti64.ld: Likewise.
* mips/mti64_64.ld: Likewise.
* mips/mti64_n32.ld: Likewise.
* mips/nullmon.ld: Likewise.
* mips/pmon.ld: Likewise.
* mips/sde32.ld: Likewise.
* mips/sde64.ld: Likewise.
* mips/crt0_cfe.S: New file.
* mips/cfe_mem.c: New file.
* mips/cfe_prestart.S: Remove.
* mips/cfe.ld: Adjust to use crt0_cfe.o as the startup file, and
and use _start as the entry point. Align BSS to 32-byte boundary.
* mips/cfe.c: Reimplement to fit on top of a crt0_cfe.o file.
* mips/cfe_api.h (__libcfe_stack_size, __libcfe_mem_limit)
(__libcfe_meminit, __libcfe_stack_top): New prototypes.
* mips/Makefile.in (CFEOBJS): Replace cfe_prestart.o with cfe_mem.o.
(cfe.o, cfe_api.o, cfe_mem.o, crt0_cfe.o): New targets.
* mips/configure.in: Build and install crt0_cfe.o when CFE support
is built.
* mips/configure: Regenerate.
* mips/Makefile.in (GENOBJS2): New variable to name other
commonly used objects.
(DVEOBJS, JMR3904OBJS): Reference GENOBJS2.
* mips/Makefile.in: Add support for Broadcom CFE firmware.
* mips/configure.in: (mipsisa32*-*-*, *): Likewise.
* mips/configure: Regenerate.
* mips/cfe.c: New file.
* mips/cfe.ld: New file.
* mips/cfe_api.c: New file.
* mips/cfe_api.h: New file.
* mips/cfe_api_int.h: New file.
* mips/cfe_error.h: New file.
* mips/cfe_prestart.S: New file.
Faraz Shahbazker
Faraz Shahbazker
Jeff Johnston
Corinna Vinschen
Richard Sandiford
Thomas Fitzsimmons