diff options
| author | Laurent Dufour <ldufour@linux.vnet.ibm.com> | 2014-02-03 15:37:49 +0100 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2014-02-04 17:26:10 +0900 |
| commit | d047cb716ee41ead450af5e8cc8e7190d2d04673 (patch) | |
| tree | 322f36bcfd1c07ed46b733651623c78e2d4662a4 /purgatory | |
| parent | 178e393d3a00604143eab2889939ea13be095e03 (diff) | |
kexec/ppc64 ELF ABIv2 ABI support
When building in PPC64 little endian mode, the compiler is now using the
new ABI v2. Among other changes, this new ABI removes the function
descriptors and changes the way the TOC address is computed when entering a
C function.
The purgatory assembly part where the dot symbols are removed, and ELF
relocation code are impacted in this patch.
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'purgatory')
| -rw-r--r-- | purgatory/arch/ppc64/Makefile | 6 | ||||
| -rw-r--r-- | purgatory/arch/ppc64/hvCall.S | 5 | ||||
| -rw-r--r-- | purgatory/arch/ppc64/ppc64_asm.h | 16 | ||||
| -rw-r--r-- | purgatory/arch/ppc64/v2wrap.S | 4 |
4 files changed, 26 insertions, 5 deletions
diff --git a/purgatory/arch/ppc64/Makefile b/purgatory/arch/ppc64/Makefile index 6f6716e..c2d0586 100644 --- a/purgatory/arch/ppc64/Makefile +++ b/purgatory/arch/ppc64/Makefile @@ -9,10 +9,12 @@ ppc64_PURGATORY_SRCS += purgatory/arch/ppc64/console-ppc64.c ppc64_PURGATORY_SRCS += purgatory/arch/ppc64/crashdump_backup.c ppc64_PURGATORY_SRCS += purgatory/arch/ppc64/misc.S -ppc64_PURGATORY_EXTRA_CFLAGS += -m64 -mcall-aixdesc -msoft-float -ppc64_PURGATORY_EXTRA_ASFLAGS += -m64 -mcall-aixdesc +ppc64_PURGATORY_EXTRA_CFLAGS += -m64 -msoft-float +ppc64_PURGATORY_EXTRA_ASFLAGS += -m64 ifeq ($(SUBARCH),BE) ppc64_PURGATORY_EXTRA_LDFLAGS += -melf64ppc + ppc64_PURGATORY_EXTRA_CFLAGS += -mcall-aixdesc + ppc64_PURGATORY_EXTRA_ASFLAGS += -mcall-aixdesc else ppc64_PURGATORY_EXTRA_LDFLAGS += -melf64lppc ppc64_PURGATORY_EXTRA_CFLAGS += -mlittle-endian diff --git a/purgatory/arch/ppc64/hvCall.S b/purgatory/arch/ppc64/hvCall.S index bdc4cb0..a96c489 100644 --- a/purgatory/arch/ppc64/hvCall.S +++ b/purgatory/arch/ppc64/hvCall.S @@ -9,12 +9,13 @@ * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ +#include "ppc64_asm.h" #define HVSC .long 0x44000022 .text .machine ppc64 -.globl .plpar_hcall_norets -.plpar_hcall_norets: +.globl DOTSYM(plpar_hcall_norets) +DOTSYM(plpar_hcall_norets): or 6,6,6 # medium low priority mfcr 0 stw 0,8(1) diff --git a/purgatory/arch/ppc64/ppc64_asm.h b/purgatory/arch/ppc64/ppc64_asm.h new file mode 100644 index 0000000..b8746fd --- /dev/null +++ b/purgatory/arch/ppc64/ppc64_asm.h @@ -0,0 +1,16 @@ +/* + * ppc64_asm.h - common defines for PPC64 assembly parts + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ + +/* + * ABIv1 requires dot symbol while ABIv2 does not. + */ +#if defined(_CALL_ELF) && _CALL_ELF == 2 +#define DOTSYM(a) a +#else +#define GLUE(a,b) a##b +#define DOTSYM(a) GLUE(.,a) +#endif diff --git a/purgatory/arch/ppc64/v2wrap.S b/purgatory/arch/ppc64/v2wrap.S index 16fb63d..2761c14 100644 --- a/purgatory/arch/ppc64/v2wrap.S +++ b/purgatory/arch/ppc64/v2wrap.S @@ -18,6 +18,8 @@ # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. # +#include "ppc64_asm.h" + # v2wrap.S # a wrapper to call purgatory code to backup first # 32kB of first kernel into the backup region @@ -77,7 +79,7 @@ master: ld 1,0(6) #setup stack subi 1,1,112 - bl .purgatory + bl DOTSYM(purgatory) nop or 3,3,3 # ok now to high priority, lets boot |