On Thu, 18 Mar 2004, Maciej W. Rozycki wrote: > Essentially all platforms that currently set the address to something > that's not aligned to a 64kB boundry. I'd like binutils to be fixed > instead, though -- I'll try to track the problem down and cook a patch > before 2.15. I think the problem may be considered serious enough the > release may even be deferred for a few days if necessary (since I believe > it's quite close). After a study of the relevant BFD code, I'm now pretty sure it does its job right -- the .text section which is placed at a fixed offset by the linker script only imposes an alignment of 4 and the 64kB alignment is required by the segment the section is placed in. So BFD does the right job by lowering the segment's VMA so that the .text section is placed at the requested offset. What's important, segment alignment happens under the assumption a binary will be used in a paged environment. This is not normally the case with a MIPS Linux kernel, so I think the right solution is to ask the linker not to do page aligning using the "-n" option. Here's a patch that should do that. Ralf, OK to apply this? Maciej -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available + patch-mips-2.4.25-20040322-nmagic-0 diff -up --recursive --new-file linux-mips-2.4.25-20040322.macro/arch/mips/Makefile linux-mips-2.4.25-20040322/arch/mips/Makefile --- linux-mips-2.4.25-20040322.macro/arch/mips/Makefile 2004-03-11 03:57:07.000000000 +0000 +++ linux-mips-2.4.25-20040322/arch/mips/Makefile 2004-03-23 11:45:26.000000000 +0000 @@ -46,7 +46,7 @@ check_gcc = $(shell if $(CC) $(1) -S -o GCCFLAGS := -I $(TOPDIR)/include/asm/gcc GCCFLAGS += -G 0 -mno-abicalls -fno-pic -pipe GCCFLAGS += $(call check_gcc, -finline-limit=100000,) -LINKFLAGS += -G 0 -static # -N +LINKFLAGS += -G 0 -static -n MODFLAGS += -mlong-calls ifdef CONFIG_DEBUG_INFO diff -up --recursive --new-file linux-mips-2.4.25-20040322.macro/arch/mips64/Makefile linux-mips-2.4.25-20040322/arch/mips64/Makefile --- linux-mips-2.4.25-20040322.macro/arch/mips64/Makefile 2004-01-03 03:56:46.000000000 +0000 +++ linux-mips-2.4.25-20040322/arch/mips64/Makefile 2004-03-23 11:45:39.000000000 +0000 @@ -39,7 +39,7 @@ endif GCCFLAGS := -I $(TOPDIR)/include/asm/gcc GCCFLAGS += -mabi=64 -G 0 -mno-abicalls -fno-pic -Wa,--trap -pipe GCCFLAGS += $(call check_gcc, -finline-limit=100000,) -LINKFLAGS += -G 0 -static # -N +LINKFLAGS += -G 0 -static -n MODFLAGS += -mlong-calls ifdef CONFIG_DEBUG_INFO
