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2014-06-16target-ppc: Set the correct endianness in ELF dump headerBharata B Rao1-4/+8
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16target-ppc: Support dump for little endian ppc64Bharata B Rao1-33/+62
Fix ppc64 arch specific dump code to support all combinations of little/big endian hosts/guests. FWIW the current code is broken for altivec registers when guest and host have a different endianness: these 128-bit registers are written to guest memory as a two 64-bit entities and we should also swap them. Unit testing was done with the following program provided by Tom Musta: #include <stdio.h> #include <stdint.h> #include <stdlib.h> int main(int argc, char** argv) { __uint128_t v = ((__uint128_t)0x0001020304050607ull << 64) | 0x08090a0b0c0d0e0full; register void * vptr asm ("r11"); vptr = &v; for(;;) asm volatile ("lvx 30,0,11" ); } When sending SIGABRT to this program and examining the core file, we get: - ppc64 : 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f - ppc64le: 0f 0e 0d 0c 0b 0a 09 08 07 06 05 04 03 02 01 00 We expect to find the very same layout in the QEMU dump since they are real core files. This is what we get: - ppc64 host, ppc64 guest : 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f - ppc64 host, ppc64le guest : 0f 0e 0d 0c 0b 0a 09 08 07 06 05 04 03 02 01 00 - x86_64 host, ppc64 guest : 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f - x86_64 host, ppc64le guest: 0f 0e 0d 0c 0b 0a 09 08 07 06 05 04 03 02 01 00 We introduce a NoteFuncArg type to avoid adding extra arguments to all note functions. Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> [ rebased on top of current master branch, introduced NoteFuncArg, use new cpu_to_dump{16,32,64} endian helpers, fix altivec support, Greg Kurz <gkurz@linux.vnet.ibm.com> ] Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-19target-ppc: Add missing 'static' and 'const' attributesStefan Weil1-3/+3
This fixes warnings from the static code analysis (smatch). Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-10-25target-ppc: dump-guest-memory supportAneesh Kumar K.V1-0/+253
This patch add support for dumping guest memory using dump-guest-memory monitor command. Before patch: (qemu) dump-guest-memory testcrash this feature or command is not currently supported (qemu) After patch: (qemu) dump-guest-memory testcrash (qemu) crash was able to read the file crash> bt PID: 0 TASK: c000000000c0d0d0 CPU: 0 COMMAND: "swapper/0" R0: 0000000028000084 R1: c000000000cafa50 R2: c000000000cb05b0 R3: 0000000000000000 R4: c000000000bc4cb0 R5: 0000000000000000 R6: 001efe93b8000000 R7: 0000000000000000 R8: 0000000000000000 R9: b000000000001032 R10: 0000000000000001 R11: 0001eb2117e00d55 .... ... NOTE: Currently crash tools doesn't look at ELF notes in the dump on ppc64. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>