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author | Alexandros C. Couloumbis <alex@ozo.com> | 2010-06-07 05:56:49 +0000 |
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committer | Alexandros C. Couloumbis <alex@ozo.com> | 2010-06-07 05:56:49 +0000 |
commit | 4503e77b0d53f912cbf9b32a14df71f61a9b1609 (patch) | |
tree | 14fd49a64056b8b9c39a14b92e06242d7801bc45 /target/linux/generic-2.6/patches-2.6.35/031-ppc_gcc_build_fix.patch | |
parent | a2225b8b293cd71d420b96d46c88ad612f3637be (diff) | |
download | master-31e0f0ae-4503e77b0d53f912cbf9b32a14df71f61a9b1609.tar.gz master-31e0f0ae-4503e77b0d53f912cbf9b32a14df71f61a9b1609.tar.bz2 master-31e0f0ae-4503e77b0d53f912cbf9b32a14df71f61a9b1609.zip |
generic-2.6: add kernel 2.6.35 preliminary support (patches)
SVN-Revision: 21696
Diffstat (limited to 'target/linux/generic-2.6/patches-2.6.35/031-ppc_gcc_build_fix.patch')
-rw-r--r-- | target/linux/generic-2.6/patches-2.6.35/031-ppc_gcc_build_fix.patch | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.35/031-ppc_gcc_build_fix.patch b/target/linux/generic-2.6/patches-2.6.35/031-ppc_gcc_build_fix.patch new file mode 100644 index 0000000000..be4d2bfc2d --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.35/031-ppc_gcc_build_fix.patch @@ -0,0 +1,226 @@ +GCC 4.4.x looks to be adding support for generating out-of-line register +saves/restores based on: + +http://gcc.gnu.org/ml/gcc-patches/2008-04/msg01678.html + +This breaks the kernel build as we'd have to link with libgcc to get the +implementation of the register save/restores. + +To workaround this issue, we just stole the save/restore code from gcc +and simplified it down for our needs (integer only). We only do this if +PPC32 as gcc makes believe the linker on ppc64 will deal with this and +only if CONFIG_CC_OPTIMIZE_FOR_SIZE is set (thus -Os). + +Signed-off-by: Kumar Gala <[EMAIL PROTECTED]> +--- + +If someone using cutting edge toolchains for ppc64 could test and make +sure if we enable CONFIG_CC_OPTIMIZE_FOR_SIZE things work that would be +nice. + +- k + + arch/powerpc/kernel/misc_32.S | 77 +++++++++++++++++++++++++++ + arch/powerpc/kernel/ppc_ksyms.c | 111 +++++++++++++++++++++++++++++++++++++++ + 2 files changed, 188 insertions(+), 0 deletions(-) + +--- a/arch/powerpc/kernel/misc_32.S ++++ b/arch/powerpc/kernel/misc_32.S +@@ -802,3 +802,80 @@ relocate_new_kernel_end: + relocate_new_kernel_size: + .long relocate_new_kernel_end - relocate_new_kernel + #endif ++ ++#if defined(CONFIG_PPC32) && defined(CONFIG_CC_OPTIMIZE_FOR_SIZE) ++/* Routines for saving integer registers, called by the compiler. */ ++/* Called with r11 pointing to the stack header word of the caller of the */ ++/* function, just beyond the end of the integer save area. */ ++ ++_GLOBAL(_savegpr_14) stw 14,-72(11) /* save gp registers */ ++_GLOBAL(_savegpr_15) stw 15,-68(11) ++_GLOBAL(_savegpr_16) stw 16,-64(11) ++_GLOBAL(_savegpr_17) stw 17,-60(11) ++_GLOBAL(_savegpr_18) stw 18,-56(11) ++_GLOBAL(_savegpr_19) stw 19,-52(11) ++_GLOBAL(_savegpr_20) stw 20,-48(11) ++_GLOBAL(_savegpr_21) stw 21,-44(11) ++_GLOBAL(_savegpr_22) stw 22,-40(11) ++_GLOBAL(_savegpr_23) stw 23,-36(11) ++_GLOBAL(_savegpr_24) stw 24,-32(11) ++_GLOBAL(_savegpr_25) stw 25,-28(11) ++_GLOBAL(_savegpr_26) stw 26,-24(11) ++_GLOBAL(_savegpr_27) stw 27,-20(11) ++_GLOBAL(_savegpr_28) stw 28,-16(11) ++_GLOBAL(_savegpr_29) stw 29,-12(11) ++_GLOBAL(_savegpr_30) stw 30,-8(11) ++_GLOBAL(_savegpr_31) stw 31,-4(11) ++ blr ++ ++/* Routines for restoring integer registers, called by the compiler. */ ++/* Called with r11 pointing to the stack header word of the caller of the */ ++/* function, just beyond the end of the integer restore area. */ ++ ++_GLOBAL(_restgpr_14) lwz 14,-72(11) /* restore gp registers */ ++_GLOBAL(_restgpr_15) lwz 15,-68(11) ++_GLOBAL(_restgpr_16) lwz 16,-64(11) ++_GLOBAL(_restgpr_17) lwz 17,-60(11) ++_GLOBAL(_restgpr_18) lwz 18,-56(11) ++_GLOBAL(_restgpr_19) lwz 19,-52(11) ++_GLOBAL(_restgpr_20) lwz 20,-48(11) ++_GLOBAL(_restgpr_21) lwz 21,-44(11) ++_GLOBAL(_restgpr_22) lwz 22,-40(11) ++_GLOBAL(_restgpr_23) lwz 23,-36(11) ++_GLOBAL(_restgpr_24) lwz 24,-32(11) ++_GLOBAL(_restgpr_25) lwz 25,-28(11) ++_GLOBAL(_restgpr_26) lwz 26,-24(11) ++_GLOBAL(_restgpr_27) lwz 27,-20(11) ++_GLOBAL(_restgpr_28) lwz 28,-16(11) ++_GLOBAL(_restgpr_29) lwz 29,-12(11) ++_GLOBAL(_restgpr_30) lwz 30,-8(11) ++_GLOBAL(_restgpr_31) lwz 31,-4(11) ++ blr ++ ++/* Routines for restoring integer registers, called by the compiler. */ ++/* Called with r11 pointing to the stack header word of the caller of the */ ++/* function, just beyond the end of the integer restore area. */ ++ ++_GLOBAL(_restgpr_14_x) lwz 14,-72(11) /* restore gp registers */ ++_GLOBAL(_restgpr_15_x) lwz 15,-68(11) ++_GLOBAL(_restgpr_16_x) lwz 16,-64(11) ++_GLOBAL(_restgpr_17_x) lwz 17,-60(11) ++_GLOBAL(_restgpr_18_x) lwz 18,-56(11) ++_GLOBAL(_restgpr_19_x) lwz 19,-52(11) ++_GLOBAL(_restgpr_20_x) lwz 20,-48(11) ++_GLOBAL(_restgpr_21_x) lwz 21,-44(11) ++_GLOBAL(_restgpr_22_x) lwz 22,-40(11) ++_GLOBAL(_restgpr_23_x) lwz 23,-36(11) ++_GLOBAL(_restgpr_24_x) lwz 24,-32(11) ++_GLOBAL(_restgpr_25_x) lwz 25,-28(11) ++_GLOBAL(_restgpr_26_x) lwz 26,-24(11) ++_GLOBAL(_restgpr_27_x) lwz 27,-20(11) ++_GLOBAL(_restgpr_28_x) lwz 28,-16(11) ++_GLOBAL(_restgpr_29_x) lwz 29,-12(11) ++_GLOBAL(_restgpr_30_x) lwz 30,-8(11) ++_GLOBAL(_restgpr_31_x) lwz 0,4(11) ++ lwz 31,-4(11) ++ mtlr 0 ++ mr 1,11 ++ blr ++#endif +--- a/arch/powerpc/kernel/ppc_ksyms.c ++++ b/arch/powerpc/kernel/ppc_ksyms.c +@@ -186,3 +186,114 @@ EXPORT_SYMBOL(__mtdcr); + EXPORT_SYMBOL(__mfdcr); + #endif + EXPORT_SYMBOL(empty_zero_page); ++ ++#if defined(CONFIG_PPC32) && defined(CONFIG_CC_OPTIMIZE_FOR_SIZE) ++void _savegpr_14(void); ++void _savegpr_15(void); ++void _savegpr_16(void); ++void _savegpr_17(void); ++void _savegpr_18(void); ++void _savegpr_19(void); ++void _savegpr_20(void); ++void _savegpr_21(void); ++void _savegpr_22(void); ++void _savegpr_23(void); ++void _savegpr_24(void); ++void _savegpr_25(void); ++void _savegpr_26(void); ++void _savegpr_27(void); ++void _savegpr_28(void); ++void _savegpr_29(void); ++void _savegpr_30(void); ++void _savegpr_31(void); ++void _restgpr_14(void); ++void _restgpr_15(void); ++void _restgpr_16(void); ++void _restgpr_17(void); ++void _restgpr_18(void); ++void _restgpr_19(void); ++void _restgpr_20(void); ++void _restgpr_21(void); ++void _restgpr_22(void); ++void _restgpr_23(void); ++void _restgpr_24(void); ++void _restgpr_25(void); ++void _restgpr_26(void); ++void _restgpr_27(void); ++void _restgpr_28(void); ++void _restgpr_29(void); ++void _restgpr_30(void); ++void _restgpr_31(void); ++void _restgpr_14_x(void); ++void _restgpr_15_x(void); ++void _restgpr_16_x(void); ++void _restgpr_17_x(void); ++void _restgpr_18_x(void); ++void _restgpr_19_x(void); ++void _restgpr_20_x(void); ++void _restgpr_21_x(void); ++void _restgpr_22_x(void); ++void _restgpr_23_x(void); ++void _restgpr_24_x(void); ++void _restgpr_25_x(void); ++void _restgpr_26_x(void); ++void _restgpr_27_x(void); ++void _restgpr_28_x(void); ++void _restgpr_29_x(void); ++void _restgpr_30_x(void); ++void _restgpr_31_x(void); ++EXPORT_SYMBOL(_savegpr_14); ++EXPORT_SYMBOL(_savegpr_15); ++EXPORT_SYMBOL(_savegpr_16); ++EXPORT_SYMBOL(_savegpr_17); ++EXPORT_SYMBOL(_savegpr_18); ++EXPORT_SYMBOL(_savegpr_19); ++EXPORT_SYMBOL(_savegpr_20); ++EXPORT_SYMBOL(_savegpr_21); ++EXPORT_SYMBOL(_savegpr_22); ++EXPORT_SYMBOL(_savegpr_23); ++EXPORT_SYMBOL(_savegpr_24); ++EXPORT_SYMBOL(_savegpr_25); ++EXPORT_SYMBOL(_savegpr_26); ++EXPORT_SYMBOL(_savegpr_27); ++EXPORT_SYMBOL(_savegpr_28); ++EXPORT_SYMBOL(_savegpr_29); ++EXPORT_SYMBOL(_savegpr_30); ++EXPORT_SYMBOL(_savegpr_31); ++EXPORT_SYMBOL(_restgpr_14); ++EXPORT_SYMBOL(_restgpr_15); ++EXPORT_SYMBOL(_restgpr_16); ++EXPORT_SYMBOL(_restgpr_17); ++EXPORT_SYMBOL(_restgpr_18); ++EXPORT_SYMBOL(_restgpr_19); ++EXPORT_SYMBOL(_restgpr_20); ++EXPORT_SYMBOL(_restgpr_21); ++EXPORT_SYMBOL(_restgpr_22); ++EXPORT_SYMBOL(_restgpr_23); ++EXPORT_SYMBOL(_restgpr_24); ++EXPORT_SYMBOL(_restgpr_25); ++EXPORT_SYMBOL(_restgpr_26); ++EXPORT_SYMBOL(_restgpr_27); ++EXPORT_SYMBOL(_restgpr_28); ++EXPORT_SYMBOL(_restgpr_29); ++EXPORT_SYMBOL(_restgpr_30); ++EXPORT_SYMBOL(_restgpr_31); ++EXPORT_SYMBOL(_restgpr_14_x); ++EXPORT_SYMBOL(_restgpr_15_x); ++EXPORT_SYMBOL(_restgpr_16_x); ++EXPORT_SYMBOL(_restgpr_17_x); ++EXPORT_SYMBOL(_restgpr_18_x); ++EXPORT_SYMBOL(_restgpr_19_x); ++EXPORT_SYMBOL(_restgpr_20_x); ++EXPORT_SYMBOL(_restgpr_21_x); ++EXPORT_SYMBOL(_restgpr_22_x); ++EXPORT_SYMBOL(_restgpr_23_x); ++EXPORT_SYMBOL(_restgpr_24_x); ++EXPORT_SYMBOL(_restgpr_25_x); ++EXPORT_SYMBOL(_restgpr_26_x); ++EXPORT_SYMBOL(_restgpr_27_x); ++EXPORT_SYMBOL(_restgpr_28_x); ++EXPORT_SYMBOL(_restgpr_29_x); ++EXPORT_SYMBOL(_restgpr_30_x); ++EXPORT_SYMBOL(_restgpr_31_x); ++#endif /* CONFIG_PPC32 && CONFIG_CC_OPTIMIZE_FOR_SIZE */ |