kernel/arch/powerpc/include/asm/ppc_asm.h, branch linux-4.3.y

powerpc: Change vsrX register defines to vsX to match gcc and glibc

2015-03-16T07:32:11Z

As our various loops (copy, string, crypto etc) get more complicated, we want to share implementations between userspace (eg glibc) and the kernel. We also want to write userspace test harnesses to put in tools/testing/selftest. One gratuitous difference between userspace and the kernel is the VSX register definitions - the kernel uses vsrX whereas gcc uses vsX. Change the kernel to match userspace. Signed-off-by: Anton Blanchard Signed-off-by: Michael Ellerman

powerpc: Change vrX register defines to vX to match gcc and glibc

2015-03-16T07:32:11Z

As our various loops (copy, string, crypto etc) get more complicated, we want to share implementations between userspace (eg glibc) and the kernel. We also want to write userspace test harnesses to put in tools/testing/selftest. One gratuitous difference between userspace and the kernel is the VMX register definitions - the kernel uses vrX whereas both gcc and glibc use vX. Change the kernel to match userspace. Signed-off-by: Anton Blanchard Signed-off-by: Michael Ellerman

PPC: Add _GLOBAL_TOC for 32bit

2014-06-26T11:19:42Z

Commit ac5a8ee8 started using _GLOBAL_TOC on ppc32 code. Unfortunately it's only defined for 64bit targets though. Define it for ppc32 as well, fixing the build breakage that commit introduced. Signed-off-by: Alexander Graf

Merge branch 'merge' into next

2014-05-28T03:30:12Z

Merge the binutils and kexec fixes.

powerpc: Fix 64 bit builds with binutils 2.24

2014-05-28T03:24:05Z

With binutils 2.24, various 64 bit builds fail with relocation errors such as arch/powerpc/kernel/built-in.o: In function `exc_debug_crit_book3e': (.text+0x165ee): relocation truncated to fit: R_PPC64_ADDR16_HI against symbol `interrupt_base_book3e' defined in .text section in arch/powerpc/kernel/built-in.o arch/powerpc/kernel/built-in.o: In function `exc_debug_crit_book3e': (.text+0x16602): relocation truncated to fit: R_PPC64_ADDR16_HI against symbol `interrupt_end_book3e' defined in .text section in arch/powerpc/kernel/built-in.o The assembler maintainer says: I changed the ABI, something that had to be done but unfortunately happens to break the booke kernel code. When building up a 64-bit value with lis, ori, shl, oris, ori or similar sequences, you now should use @high and @higha in place of @h and @ha. @h and @ha (and their associated relocs R_PPC64_ADDR16_HI and R_PPC64_ADDR16_HA) now report overflow if the value is out of 32-bit signed range. ie. @h and @ha assume you're building a 32-bit value. This is needed to report out-of-range -mcmodel=medium toc pointer offsets in @toc@h and @toc@ha expressions, and for consistency I did the same for all other @h and @ha relocs. Replacing @h with @high in one strategic location fixes the relocation errors. This has to be done conditionally since the assembler either supports @h or @high but not both. Cc: Signed-off-by: Guenter Roeck Signed-off-by: Benjamin Herrenschmidt

powerpc: Add _GLOBAL_TOC for ABIv2 assembly functions exported to modules

2014-04-23T00:05:32Z

If an assembly function that calls back into c code is exported to modules, we need to ensure r2 is setup correctly. There are only two places crazy enough to do it (two of which are my fault). Signed-off-by: Anton Blanchard

powerpc/tm: Fix GOT save offset for ABIv2

2014-04-23T00:05:25Z

The r2 TOC/GOT save offset is 40 on ABIv1 and 24 on ABIv2. Signed-off-by: Anton Blanchard

powerpc: Fix ABIv2 issues with stack offsets in assembly code

2014-04-23T00:05:23Z

Fix STK_PARAM and use it instead of hardcoding ABIv1 offsets. Signed-off-by: Anton Blanchard

powerpc: Remove function descriptors and dot symbols on new ABI

2014-04-23T00:05:20Z

ABIv2 doesn't have function descriptors or dot symbols. One new thing it does add is a function global and a local entry point, so add that to our _GLOBAL macro. Signed-off-by: Anton Blanchard

powerpc: Create DOTSYM to wrap dot symbol usage

2014-04-23T00:05:19Z

There are a few places we have to use dot symbols with the current ABI - the syscall table and the kvm hcall table. Wrap both of these with a new macro called DOTSYM so it will be easy to transition away from dot symbols in a future ABI. Signed-off-by: Anton Blanchard