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* kernel: prevent -f*-sections from leaking into the boot zImage wrapper on armnbd2013-03-101-0/+10
| | | | git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35938 3c298f89-4303-0410-b956-a3cf2f4a3e73
* kernel: ensure that the arm exception handlers get preservednbd2013-03-101-0/+9
| | | | git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35937 3c298f89-4303-0410-b956-a3cf2f4a3e73
* kernel: use -ffunction-sections, -fdata-sections and --gc-sections on ARM to ↵nbd2013-03-101-1/+93
| | | | | | reduce kernel image size, disable those flags when tracing on MIPS to fix compile errors git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35936 3c298f89-4303-0410-b956-a3cf2f4a3e73
* generic: fix gc_sections patchjuhosg2013-02-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Due to the patch, essential '.data..*' sections are merged into the '.data' section: --- vmlinux.good.sect 2013-02-01 23:49:16.000000000 +0100 +++ vmlinux.bad.sect 2013-02-01 23:49:02.000000000 +0100 @@ -1,5 +1,5 @@ -vmlinux.good: file format elf32-powerpc +vmlinux.bad: file format elf32-powerpc Sections: Idx Name Size VMA LMA File off Algn @@ -53,43 +53,35 @@ CONTENTS, ALLOC, LOAD, READONLY, DATA 24 .machine.desc 00000460 c04e1000 004e1000 004f1000 2**2 CONTENTS, ALLOC, LOAD, DATA - 25 .data 0000f6a0 c04e2000 004e2000 004f2000 2**12 + 25 .data 0001635c c04e2000 004e2000 004f2000 2**12 CONTENTS, ALLOC, LOAD, DATA - 26 .data..init_task 00002000 c04f2000 004f2000 00502000 2**3 - CONTENTS, ALLOC, LOAD, DATA - 27 .data..page_aligned 00002000 c04f4000 004f4000 00504000 2**12 - CONTENTS, ALLOC, LOAD, DATA - 28 .data..cacheline_aligned 00000c00 c04f6000 004f6000 00506000 2**5 - CONTENTS, ALLOC, LOAD, DATA - 29 .data..read_mostly 000015e0 c04f6c00 004f6c00 00506c00 2**3 - CONTENTS, ALLOC, LOAD, DATA - 30 .sbss 000002e0 c04f9000 004f9000 005081e0 2**3 + 26 .sbss 000002e0 c04fa000 004fa000 0050835c 2**3 <...> This causes boot hang on powerpc. Modify the patch to ensure that the kernel specific '.data..*' sections remain separate. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35447 3c298f89-4303-0410-b956-a3cf2f4a3e73
* kernel: use -ffunction-sections, -fdata-sections and --gc-sections on mipsnbd2013-01-261-0/+372
in combination with kernel symbol export stripping this significantly reduces the kernel image size git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35320 3c298f89-4303-0410-b956-a3cf2f4a3e73
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