From patchwork Thu Jul 31 11:04:45 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Arnez X-Patchwork-Id: 2253 Received: (qmail 26297 invoked by alias); 31 Jul 2014 11:05:06 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Delivered-To: mailing list gdb-patches@sourceware.org Received: (qmail 25783 invoked by uid 89); 31 Jul 2014 11:05:03 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.6 required=5.0 tests=AWL, BAYES_00, RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: e06smtp15.uk.ibm.com Received: from e06smtp15.uk.ibm.com (HELO e06smtp15.uk.ibm.com) (195.75.94.111) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-SHA encrypted) ESMTPS; Thu, 31 Jul 2014 11:05:01 +0000 Received: from /spool/local by e06smtp15.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Date: Thu, 31 Jul 2014 13:04:45 +0200 Message-Id: <1406804686-9437-13-git-send-email-arnez@linux.vnet.ibm.com> In-Reply-To: <1406804686-9437-1-git-send-email-arnez@linux.vnet.ibm.com> References: <1406804686-9437-1-git-send-email-arnez@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14073111-0342-0000-0000-0000009C83A2 X-IsSubscribed: yes gdb/ * m68klinux-tdep.c: Include "regset.h". (m68k_linux_gregmap, m68k_linux_fpregmap): New register maps. (M68K_LINUX_GREGS_SIZE, M68K_LINUX_FPREGS_SIZE): New macros. (m68k_linux_gregset, m68k_linux_fpregset): New regsets. (m68k_linux_regset_from_core_section): New function. (m68k_linux_init_abi): Set regset_from_core_section gdbarch method. --- gdb/m68klinux-tdep.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) diff --git a/gdb/m68klinux-tdep.c b/gdb/m68klinux-tdep.c index f6fed38..d2c4bb0 100644 --- a/gdb/m68klinux-tdep.c +++ b/gdb/m68klinux-tdep.c @@ -38,6 +38,7 @@ #include "observer.h" #include "elf/common.h" #include "linux-tdep.h" +#include "regset.h" /* Offsets (in target ints) into jmp_buf. */ @@ -327,6 +328,67 @@ static const struct frame_unwind m68k_linux_sigtramp_frame_unwind = m68k_linux_sigtramp_frame_sniffer }; +/* Register maps for supply/collect regset functions. */ + +static const struct regcache_map_entry m68k_linux_gregmap[] = + { + { 7, M68K_D1_REGNUM, 4 }, /* d1 ... d7 */ + { 7, M68K_A0_REGNUM, 4 }, /* a0 ... a6 */ + { 1, M68K_D0_REGNUM, 4 }, + { 1, M68K_SP_REGNUM, 4 }, + { 1, REGCACHE_MAP_SKIP, 4 }, /* orig_d0 (skip) */ + { 1, M68K_PS_REGNUM, 4 }, + { 1, M68K_PC_REGNUM, 4 }, + /* Ignore 16-bit fields 'fmtvec' and '__fill'. */ + { 0 } + }; + +#define M68K_LINUX_GREGS_SIZE (20 * 4) + +static const struct regcache_map_entry m68k_linux_fpregmap[] = + { + { 8, M68K_FP0_REGNUM, 12 }, /* fp0 ... fp7 */ + { 1, M68K_FPC_REGNUM, 4 }, + { 1, M68K_FPS_REGNUM, 4 }, + { 1, M68K_FPI_REGNUM, 4 }, + { 0 } + }; + +#define M68K_LINUX_FPREGS_SIZE (27 * 4) + +/* Register sets. */ + +static const struct regset m68k_linux_gregset = + { + m68k_linux_gregmap, + regcache_supply_regset, regcache_collect_regset + }; + +static const struct regset m68k_linux_fpregset = + { + m68k_linux_fpregmap, + regcache_supply_regset, regcache_collect_regset + }; + +/* Return the appropriate register set for the core section identified + by SECT_NAME and SECT_SIZE. */ + +static const struct regset * +m68k_linux_regset_from_core_section (struct gdbarch *gdbarch, + const char *sect_name, + size_t sect_size) +{ + if (strcmp (sect_name, ".reg") == 0 + && sect_size >= M68K_LINUX_GREGS_SIZE) + return &m68k_linux_gregset; + + if (strcmp (sect_name, ".reg2") == 0 + && sect_size >= M68K_LINUX_FPREGS_SIZE) + return &m68k_linux_fpregset; + + return NULL; +} + static void m68k_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { @@ -361,6 +423,10 @@ m68k_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target); + /* Core file support. */ + set_gdbarch_regset_from_core_section + (gdbarch, m68k_linux_regset_from_core_section); + /* Enable TLS support. */ set_gdbarch_fetch_tls_load_module_address (gdbarch, svr4_fetch_objfile_link_map);