mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-02-17 13:10:12 +08:00
* Makefile.in (ALLDEPFILES): Remove i387-nat.c.
(i387-nat.o): Delete dependency list. (go32-nat.o): Change i387-nat.h to i387-tdep.h. (x86-64-linux-nat.o): Likewise. * i387-nat.c: Delete file, moving contents to... * i387-tdep.c: ...here. * i387-nat.h: Rename... * i387-tdep.h: ...to this. * go32-nat.c: Include i387-tdep.h instead of i387-nat.h. * i386-linux-nat.c: Likewise. * i386bsd-nat.c: Likewise. * i386gnu-nat.c: Likewise. * i386nbsd-nat.c: Likewise. * i386v4-nat.c: Likewise. * x86-64-linux-nat.c: Likewise. * config/i386/fbsd.mh (NATDEPFILES): Remove i387-nat.o. * config/i386/go32.mh (NATDEPFILES): Likewise. * config/i386/i386gnu.mh (NATDEPFILES): Likewise. * config/i386/i386sol2.mh (NATDEPFILES): Likewise. * config/i386/i386v42mp.mh (NATDEPFILES): Likewise. * config/i386/linux.mh (NATDEPFILES): Likewise. * config/i386/nbsd.mh (NATDEPFILES): Likewise. * config/i386/nbsdelf.mh (NATDEPFILES): Likewise. * config/i386/obsd.mh (NATDEPFILES): Likewise. * config/i386/x86-64linux.mh (NATDEPFILES): Likewise.
This commit is contained in:
Jason Thorpe
parent
a9a32010d5
commit
e750d25e90
@ -1,3 +1,31 @@
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2002-05-11 Jason Thorpe <thorpej@wasabisystems.com>
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* Makefile.in (ALLDEPFILES): Remove i387-nat.c.
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(i387-nat.o): Delete dependency list.
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(go32-nat.o): Change i387-nat.h to i387-tdep.h.
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(x86-64-linux-nat.o): Likewise.
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* i387-nat.c: Delete file, moving contents to...
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* i387-tdep.c: ...here.
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* i387-nat.h: Rename...
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* i387-tdep.h: ...to this.
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* go32-nat.c: Include i387-tdep.h instead of i387-nat.h.
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* i386-linux-nat.c: Likewise.
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* i386bsd-nat.c: Likewise.
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* i386gnu-nat.c: Likewise.
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* i386nbsd-nat.c: Likewise.
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* i386v4-nat.c: Likewise.
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* x86-64-linux-nat.c: Likewise.
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* config/i386/fbsd.mh (NATDEPFILES): Remove i387-nat.o.
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* config/i386/go32.mh (NATDEPFILES): Likewise.
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* config/i386/i386gnu.mh (NATDEPFILES): Likewise.
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* config/i386/i386sol2.mh (NATDEPFILES): Likewise.
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* config/i386/i386v42mp.mh (NATDEPFILES): Likewise.
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* config/i386/linux.mh (NATDEPFILES): Likewise.
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* config/i386/nbsd.mh (NATDEPFILES): Likewise.
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* config/i386/nbsdelf.mh (NATDEPFILES): Likewise.
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* config/i386/obsd.mh (NATDEPFILES): Likewise.
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* config/i386/x86-64linux.mh (NATDEPFILES): Likewise.
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2002-05-11 Jason Thorpe <thorpej@wasabisystems.com>
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* Makefile.in (ALLDEPFILES): Add alphabsd-tdep.c.
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@ -1192,7 +1192,7 @@ ALLDEPFILES = 29k-share/udi/udip2soc.c 29k-share/udi/udr.c \
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i386-tdep.c i386b-nat.c i386mach-nat.c i386v-nat.c i386-linux-nat.c \
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i386aix-nat.c i386m3-nat.c i386v4-nat.c i386ly-tdep.c \
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i386bsd-nat.c i386bsd-tdep.c i386fbsd-nat.c \
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i387-tdep.c i387-nat.c \
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i387-tdep.c \
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i386-linux-tdep.c i386-nat.c \
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i960-tdep.c \
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ia64-linux-nat.c ia64-linux-tdep.c ia64-tdep.c \
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@ -1557,7 +1557,7 @@ gdbtypes.o: gdbtypes.c $(bfd_h) $(complaints_h) $(defs_h) $(expression_h) \
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$(target_h) $(value_h) $(gdb_string_h) $(wrapper_h) $(cp_abi_h)
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go32-nat.o: go32-nat.c $(defs_h) $(inferior_h) gdb_wait.h $(gdbcore_h) \
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$(command_h) $(floatformat_h) $(target_h) i387-nat.h $(regcache_h)
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$(command_h) $(floatformat_h) $(target_h) i387-tdep.h $(regcache_h)
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gnu-nat.o: process_reply_S.h exc_request_S.h notify_S.h msg_reply_S.h \
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exc_request_U.h msg_U.h gnu-nat.h
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@ -1634,9 +1634,6 @@ i386v4-nat.o: i386v4-nat.c $(defs_h) $(regcache_h)
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i387-tdep.o: i387-tdep.c $(floatformat_h) $(defs_h) $(gdbcore_h) \
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$(inferior_h) $(language_h) $(regcache_h) $(doublest_h) i386-tdep.h
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i387-nat.o: i387-nat.c $(defs_h) $(inferior_h) $(value_h) $(regcache_h) \
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i387-nat.h
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i960-tdep.o: i960-tdep.c $(floatformat_h) $(defs_h) $(expression_h) \
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$(frame_h) $(gdbtypes_h) $(symtab_h) $(value_h) $(gdbcore_h) \
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$(regcache_h)
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@ -2162,7 +2159,7 @@ x86-64-tdep.o : x86-64-tdep.c $(defs_h) $(inferior_h) $(gdbcore_h) $(gdbcmd_h) \
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$(dwarf2cfi_h) gdb_assert.h
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x86-64-linux-nat.o : x86-64-linux-nat.c $(defs_h) $(inferior_h) \
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$(gdbcore_h) $(regcache_h) i387-nat.h gdb_assert.h x86-64-tdep.h \
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$(gdbcore_h) $(regcache_h) i387-tdep.h gdb_assert.h x86-64-tdep.h \
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i386-tdep.h
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win32-nat.o: win32-nat.c $(gdbcmd_h) $(gdbcore_h) $(inferior_h) $(defs_h) \
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@ -4,4 +4,4 @@ XM_FILE= xm-i386.h
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NAT_FILE= nm-fbsd.h
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# NOTE: Do not spread NATDEPFILES over several lines - it hurts BSD make.
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NATDEPFILES= fork-child.o infptrace.o inftarg.o solib.o solib-svr4.o solib-legacy.o corelow.o core-aout.o core-regset.o i386-nat.o i387-nat.o i386bsd-nat.o i386fbsd-nat.o gcore.o fbsd-proc.o
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NATDEPFILES= fork-child.o infptrace.o inftarg.o solib.o solib-svr4.o solib-legacy.o corelow.o core-aout.o core-regset.o i386-nat.o i386bsd-nat.o i386fbsd-nat.o gcore.o fbsd-proc.o
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@ -7,7 +7,7 @@ MMALLOC_CFLAGS=
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XM_FILE= xm-go32.h
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NAT_FILE= nm-go32.h
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NATDEPFILES= go32-nat.o i386-nat.o i387-nat.o
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NATDEPFILES= go32-nat.o i386-nat.o
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TERMCAP=
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HOST_IPC=
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@ -1,5 +1,5 @@
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# Host: Intel 386 running the GNU Hurd
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NATDEPFILES= i386gnu-nat.o i387-nat.o gnu-nat.o corelow.o core-regset.o \
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NATDEPFILES= i386gnu-nat.o gnu-nat.o corelow.o core-regset.o \
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fork-child.o solib.o solib-svr4.o solib-legacy.o \
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notify_S.o process_reply_S.o msg_reply_S.o \
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msg_U.o exc_request_U.o exc_request_S.o
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@ -4,5 +4,5 @@ XM_FILE= xm-i386v4.h
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XM_CLIBS= -lsocket -lnsl
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NAT_FILE= nm-i386sol2.h
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NATDEPFILES= core-regset.o fork-child.o i386v4-nat.o i387-nat.o corelow.o \
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NATDEPFILES= core-regset.o fork-child.o i386v4-nat.o corelow.o \
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procfs.o proc-api.o proc-events.o proc-flags.o proc-why.o gcore.o
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@ -14,7 +14,7 @@ NAT_FILE= nm-i386v42mp.h
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# continuation character (backslash) to extend a commented line. As a
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# consequence, make considers subsequent tab-indented lines to be
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# some sort of error.
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NATDEPFILES= corelow.o core-regset.o fork-child.o i386v4-nat.o i387-nat.o \
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NATDEPFILES= corelow.o core-regset.o fork-child.o i386v4-nat.o \
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gcore.o solib.o solib-svr4.o solib-legacy.o procfs.o proc-api.o \
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proc-events.o proc-flags.o proc-why.o uw-thread.o
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@ -4,7 +4,7 @@ XM_FILE= xm-i386.h
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NAT_FILE= nm-linux.h
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NATDEPFILES= infptrace.o inftarg.o fork-child.o corelow.o linux-proc.o \
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core-aout.o i386-nat.o i386-linux-nat.o i387-nat.o \
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core-aout.o i386-nat.o i386-linux-nat.o \
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proc-service.o thread-db.o lin-lwp.o linux-proc.o gcore.o
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# The dynamically loaded libthread_db needs access to symbols in the
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@ -6,7 +6,7 @@
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# continuation character (backslash) to extend a commented line. As a
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# consequence, BSD make considers subsequent tab-indented lines to be
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# "unassociated shell commands".
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NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o i387-nat.o i386bsd-nat.o i386nbsd-nat.o solib.o solib-sunos.o
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NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o i386bsd-nat.o i386nbsd-nat.o solib.o solib-sunos.o
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XM_FILE= xm-nbsd.h
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NAT_FILE= nm-nbsd.h
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@ -1,4 +1,4 @@
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# Host: Intel 386 running NetBSD
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NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o i387-nat.o i386bsd-nat.o i386nbsd-nat.o solib.o solib-svr4.o solib-legacy.o
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NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o i386bsd-nat.o i386nbsd-nat.o solib.o solib-svr4.o solib-legacy.o
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XM_FILE= xm-nbsd.h
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NAT_FILE= nm-nbsdelf.h
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@ -4,4 +4,4 @@ XM_FILE= xm-i386.h
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NAT_FILE= nm-obsd.h
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# NOTE: Do not spread NATDEPFILES over several lines - it hurts BSD make.
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NATDEPFILES= fork-child.o infptrace.o inftarg.o solib.o solib-sunos.o corelow.o core-aout.o i386-nat.o i387-nat.o i386bsd-nat.o
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NATDEPFILES= fork-child.o infptrace.o inftarg.o solib.o solib-sunos.o corelow.o core-aout.o i386-nat.o i386bsd-nat.o
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@ -5,7 +5,7 @@ XM_FILE= xm-i386.h
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NAT_FILE= nm-x86-64.h
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NATDEPFILES= infptrace.o inftarg.o fork-child.o corelow.o \
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core-aout.o i386-nat.o x86-64-linux-nat.o \
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i387-nat.o proc-service.o thread-db.o lin-lwp.o \
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proc-service.o thread-db.o lin-lwp.o \
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linux-proc.o gcore.o
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LOADLIBES = -ldl -rdynamic
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@ -29,7 +29,7 @@
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#include "gdbcmd.h"
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#include "floatformat.h"
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#include "buildsym.h"
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#include "i387-nat.h"
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#include "i387-tdep.h"
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#include "i386-tdep.h"
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#include "value.h"
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#include "regcache.h"
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@ -57,7 +57,7 @@
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#include "gregset.h"
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/* Prototypes for i387_supply_fsave etc. */
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#include "i387-nat.h"
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#include "i387-tdep.h"
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/* Defines for XMM0_REGNUM etc. */
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#include "i386-tdep.h"
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@ -148,7 +148,7 @@ fill_gregset (gregset_t *gregsetp, int regno)
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regcache_collect (i, REG_ADDR (gregsetp, i));
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}
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#include "i387-nat.h"
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#include "i387-tdep.h"
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/* Fill GDB's register array with the floating-point register values
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in *FPREGSETP. */
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@ -36,7 +36,7 @@
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#include "i386-tdep.h"
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#include "gnu-nat.h"
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#include "i387-nat.h"
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#include "i387-tdep.h"
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#ifdef HAVE_SYS_PROCFS_H
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# include <sys/procfs.h>
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@ -39,7 +39,7 @@ typedef struct fpreg fpregset_t;
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#include "gregset.h"
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/* Prototypes for i387_supply_fsave etc. */
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#include "i387-nat.h"
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#include "i387-tdep.h"
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struct md_core
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{
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@ -27,7 +27,7 @@
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#ifdef HAVE_SYS_REG_H
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#include <sys/reg.h>
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#endif
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#include "i387-nat.h"
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#include "i387-tdep.h"
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#ifdef HAVE_SYS_PROCFS_H
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335
gdb/i387-nat.c
335
gdb/i387-nat.c
@ -1,335 +0,0 @@
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/* Native-dependent code for the i387.
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Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
|
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You should have received a copy of the GNU General Public License
|
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "inferior.h"
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#include "value.h"
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#include "regcache.h"
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#include "i387-nat.h"
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#include "i386-tdep.h"
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/* FIXME: kettenis/2000-05-21: Right now more than a few i386 targets
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define their own routines to manage the floating-point registers in
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GDB's register array. Most (if not all) of these targets use the
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format used by the "fsave" instruction in their communication with
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the OS. They should all be converted to use the routines below. */
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/* At fsave_offset[REGNUM] you'll find the offset to the location in
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the data structure used by the "fsave" instruction where GDB
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register REGNUM is stored. */
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static int fsave_offset[] =
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{
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28 + 0 * FPU_REG_RAW_SIZE, /* FP0_REGNUM through ... */
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28 + 1 * FPU_REG_RAW_SIZE,
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28 + 2 * FPU_REG_RAW_SIZE,
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28 + 3 * FPU_REG_RAW_SIZE,
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28 + 4 * FPU_REG_RAW_SIZE,
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28 + 5 * FPU_REG_RAW_SIZE,
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28 + 6 * FPU_REG_RAW_SIZE,
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28 + 7 * FPU_REG_RAW_SIZE, /* ... FP7_REGNUM. */
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0, /* FCTRL_REGNUM (16 bits). */
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4, /* FSTAT_REGNUM (16 bits). */
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8, /* FTAG_REGNUM (16 bits). */
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16, /* FISEG_REGNUM (16 bits). */
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12, /* FIOFF_REGNUM. */
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24, /* FOSEG_REGNUM. */
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20, /* FOOFF_REGNUM. */
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18 /* FOP_REGNUM (bottom 11 bits). */
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};
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#define FSAVE_ADDR(fsave, regnum) (fsave + fsave_offset[regnum - FP0_REGNUM])
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/* Fill register REGNUM in GDB's register array with the appropriate
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value from *FSAVE. This function masks off any of the reserved
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bits in *FSAVE. */
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void
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i387_supply_register (int regnum, char *fsave)
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{
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/* Most of the FPU control registers occupy only 16 bits in
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the fsave area. Give those a special treatment. */
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if (regnum >= FPC_REGNUM
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&& regnum != FIOFF_REGNUM && regnum != FOOFF_REGNUM)
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{
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unsigned char val[4];
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memcpy (val, FSAVE_ADDR (fsave, regnum), 2);
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val[2] = val[3] = 0;
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if (regnum == FOP_REGNUM)
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val[1] &= ((1 << 3) - 1);
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supply_register (regnum, val);
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}
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else
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supply_register (regnum, FSAVE_ADDR (fsave, regnum));
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}
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/* Fill GDB's register array with the floating-point register values
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in *FSAVE. This function masks off any of the reserved
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bits in *FSAVE. */
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void
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i387_supply_fsave (char *fsave)
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{
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int i;
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for (i = FP0_REGNUM; i < XMM0_REGNUM; i++)
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i387_supply_register (i, fsave);
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}
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/* Fill register REGNUM (if it is a floating-point register) in *FSAVE
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with the value in GDB's register array. If REGNUM is -1, do this
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for all registers. This function doesn't touch any of the reserved
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bits in *FSAVE. */
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void
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i387_fill_fsave (char *fsave, int regnum)
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{
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int i;
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for (i = FP0_REGNUM; i < XMM0_REGNUM; i++)
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if (regnum == -1 || regnum == i)
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{
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/* Most of the FPU control registers occupy only 16 bits in
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the fsave area. Give those a special treatment. */
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if (i >= FPC_REGNUM
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&& i != FIOFF_REGNUM && i != FOOFF_REGNUM)
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{
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unsigned char buf[4];
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regcache_collect (i, buf);
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if (i == FOP_REGNUM)
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{
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/* The opcode occupies only 11 bits. Make sure we
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don't touch the other bits. */
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buf[1] &= ((1 << 3) - 1);
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buf[1] |= ((FSAVE_ADDR (fsave, i))[1] & ~((1 << 3) - 1));
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}
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memcpy (FSAVE_ADDR (fsave, i), buf, 2);
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}
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else
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regcache_collect (i, FSAVE_ADDR (fsave, i));
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}
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}
|
||||
|
||||
|
||||
/* At fxsave_offset[REGNUM] you'll find the offset to the location in
|
||||
the data structure used by the "fxsave" instruction where GDB
|
||||
register REGNUM is stored. */
|
||||
|
||||
static int fxsave_offset[] =
|
||||
{
|
||||
32, /* FP0_REGNUM through ... */
|
||||
48,
|
||||
64,
|
||||
80,
|
||||
96,
|
||||
112,
|
||||
128,
|
||||
144, /* ... FP7_REGNUM (80 bits each). */
|
||||
0, /* FCTRL_REGNUM (16 bits). */
|
||||
2, /* FSTAT_REGNUM (16 bits). */
|
||||
4, /* FTAG_REGNUM (16 bits). */
|
||||
12, /* FISEG_REGNUM (16 bits). */
|
||||
8, /* FIOFF_REGNUM. */
|
||||
20, /* FOSEG_REGNUM (16 bits). */
|
||||
16, /* FOOFF_REGNUM. */
|
||||
6, /* FOP_REGNUM (bottom 11 bits). */
|
||||
160, /* XMM0_REGNUM through ... */
|
||||
176,
|
||||
192,
|
||||
208,
|
||||
224,
|
||||
240,
|
||||
256,
|
||||
272, /* ... XMM7_REGNUM (128 bits each). */
|
||||
24, /* MXCSR_REGNUM. */
|
||||
};
|
||||
|
||||
#define FXSAVE_ADDR(fxsave, regnum) \
|
||||
(fxsave + fxsave_offset[regnum - FP0_REGNUM])
|
||||
|
||||
static int i387_tag (unsigned char *raw);
|
||||
|
||||
|
||||
/* Fill GDB's register array with the floating-point and SSE register
|
||||
values in *FXSAVE. This function masks off any of the reserved
|
||||
bits in *FXSAVE. */
|
||||
|
||||
void
|
||||
i387_supply_fxsave (char *fxsave)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = FP0_REGNUM; i <= MXCSR_REGNUM; i++)
|
||||
{
|
||||
/* Most of the FPU control registers occupy only 16 bits in
|
||||
the fxsave area. Give those a special treatment. */
|
||||
if (i >= FPC_REGNUM && i < XMM0_REGNUM
|
||||
&& i != FIOFF_REGNUM && i != FOOFF_REGNUM)
|
||||
{
|
||||
unsigned char val[4];
|
||||
|
||||
memcpy (val, FXSAVE_ADDR (fxsave, i), 2);
|
||||
val[2] = val[3] = 0;
|
||||
if (i == FOP_REGNUM)
|
||||
val[1] &= ((1 << 3) - 1);
|
||||
else if (i== FTAG_REGNUM)
|
||||
{
|
||||
/* The fxsave area contains a simplified version of the
|
||||
tag word. We have to look at the actual 80-bit FP
|
||||
data to recreate the traditional i387 tag word. */
|
||||
|
||||
unsigned long ftag = 0;
|
||||
int fpreg;
|
||||
int top;
|
||||
|
||||
top = (((FXSAVE_ADDR (fxsave, FSTAT_REGNUM))[1] >> 3) & 0x7);
|
||||
|
||||
for (fpreg = 7; fpreg >= 0; fpreg--)
|
||||
{
|
||||
int tag;
|
||||
|
||||
if (val[0] & (1 << fpreg))
|
||||
{
|
||||
int regnum = (fpreg + 8 - top) % 8 + FP0_REGNUM;
|
||||
tag = i387_tag (FXSAVE_ADDR (fxsave, regnum));
|
||||
}
|
||||
else
|
||||
tag = 3; /* Empty */
|
||||
|
||||
ftag |= tag << (2 * fpreg);
|
||||
}
|
||||
val[0] = ftag & 0xff;
|
||||
val[1] = (ftag >> 8) & 0xff;
|
||||
}
|
||||
supply_register (i, val);
|
||||
}
|
||||
else
|
||||
supply_register (i, FXSAVE_ADDR (fxsave, i));
|
||||
}
|
||||
}
|
||||
|
||||
/* Fill register REGNUM (if it is a floating-point or SSE register) in
|
||||
*FXSAVE with the value in GDB's register array. If REGNUM is -1, do
|
||||
this for all registers. This function doesn't touch any of the
|
||||
reserved bits in *FXSAVE. */
|
||||
|
||||
void
|
||||
i387_fill_fxsave (char *fxsave, int regnum)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = FP0_REGNUM; i <= MXCSR_REGNUM; i++)
|
||||
if (regnum == -1 || regnum == i)
|
||||
{
|
||||
/* Most of the FPU control registers occupy only 16 bits in
|
||||
the fxsave area. Give those a special treatment. */
|
||||
if (i >= FPC_REGNUM && i < XMM0_REGNUM
|
||||
&& i != FIOFF_REGNUM && i != FDOFF_REGNUM)
|
||||
{
|
||||
unsigned char buf[4];
|
||||
|
||||
regcache_collect (i, buf);
|
||||
|
||||
if (i == FOP_REGNUM)
|
||||
{
|
||||
/* The opcode occupies only 11 bits. Make sure we
|
||||
don't touch the other bits. */
|
||||
buf[1] &= ((1 << 3) - 1);
|
||||
buf[1] |= ((FXSAVE_ADDR (fxsave, i))[1] & ~((1 << 3) - 1));
|
||||
}
|
||||
else if (i == FTAG_REGNUM)
|
||||
{
|
||||
/* Converting back is much easier. */
|
||||
|
||||
unsigned short ftag;
|
||||
int fpreg;
|
||||
|
||||
ftag = (buf[1] << 8) | buf[0];
|
||||
buf[0] = 0;
|
||||
buf[1] = 0;
|
||||
|
||||
for (fpreg = 7; fpreg >= 0; fpreg--)
|
||||
{
|
||||
int tag = (ftag >> (fpreg * 2)) & 3;
|
||||
|
||||
if (tag != 3)
|
||||
buf[0] |= (1 << fpreg);
|
||||
}
|
||||
}
|
||||
memcpy (FXSAVE_ADDR (fxsave, i), buf, 2);
|
||||
}
|
||||
else
|
||||
regcache_collect (i, FXSAVE_ADDR (fxsave, i));
|
||||
}
|
||||
}
|
||||
|
||||
/* Recreate the FTW (tag word) valid bits from the 80-bit FP data in
|
||||
*RAW. */
|
||||
|
||||
static int
|
||||
i387_tag (unsigned char *raw)
|
||||
{
|
||||
int integer;
|
||||
unsigned int exponent;
|
||||
unsigned long fraction[2];
|
||||
|
||||
integer = raw[7] & 0x80;
|
||||
exponent = (((raw[9] & 0x7f) << 8) | raw[8]);
|
||||
fraction[0] = ((raw[3] << 24) | (raw[2] << 16) | (raw[1] << 8) | raw[0]);
|
||||
fraction[1] = (((raw[7] & 0x7f) << 24) | (raw[6] << 16)
|
||||
| (raw[5] << 8) | raw[4]);
|
||||
|
||||
if (exponent == 0x7fff)
|
||||
{
|
||||
/* Special. */
|
||||
return (2);
|
||||
}
|
||||
else if (exponent == 0x0000)
|
||||
{
|
||||
if (fraction[0] == 0x0000 && fraction[1] == 0x0000 && !integer)
|
||||
{
|
||||
/* Zero. */
|
||||
return (1);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Special. */
|
||||
return (2);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (integer)
|
||||
{
|
||||
/* Valid. */
|
||||
return (0);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Special. */
|
||||
return (2);
|
||||
}
|
||||
}
|
||||
}
|
||||
308
gdb/i387-tdep.c
308
gdb/i387-tdep.c
@ -388,3 +388,311 @@ i387_float_info (void)
|
||||
printf_filtered ("Opcode: %s\n",
|
||||
local_hex_string_custom (fop ? (fop | 0xd800) : 0, "04"));
|
||||
}
|
||||
|
||||
/* FIXME: kettenis/2000-05-21: Right now more than a few i386 targets
|
||||
define their own routines to manage the floating-point registers in
|
||||
GDB's register array. Most (if not all) of these targets use the
|
||||
format used by the "fsave" instruction in their communication with
|
||||
the OS. They should all be converted to use the routines below. */
|
||||
|
||||
/* At fsave_offset[REGNUM] you'll find the offset to the location in
|
||||
the data structure used by the "fsave" instruction where GDB
|
||||
register REGNUM is stored. */
|
||||
|
||||
static int fsave_offset[] =
|
||||
{
|
||||
28 + 0 * FPU_REG_RAW_SIZE, /* FP0_REGNUM through ... */
|
||||
28 + 1 * FPU_REG_RAW_SIZE,
|
||||
28 + 2 * FPU_REG_RAW_SIZE,
|
||||
28 + 3 * FPU_REG_RAW_SIZE,
|
||||
28 + 4 * FPU_REG_RAW_SIZE,
|
||||
28 + 5 * FPU_REG_RAW_SIZE,
|
||||
28 + 6 * FPU_REG_RAW_SIZE,
|
||||
28 + 7 * FPU_REG_RAW_SIZE, /* ... FP7_REGNUM. */
|
||||
0, /* FCTRL_REGNUM (16 bits). */
|
||||
4, /* FSTAT_REGNUM (16 bits). */
|
||||
8, /* FTAG_REGNUM (16 bits). */
|
||||
16, /* FISEG_REGNUM (16 bits). */
|
||||
12, /* FIOFF_REGNUM. */
|
||||
24, /* FOSEG_REGNUM. */
|
||||
20, /* FOOFF_REGNUM. */
|
||||
18 /* FOP_REGNUM (bottom 11 bits). */
|
||||
};
|
||||
|
||||
#define FSAVE_ADDR(fsave, regnum) (fsave + fsave_offset[regnum - FP0_REGNUM])
|
||||
|
||||
|
||||
/* Fill register REGNUM in GDB's register array with the appropriate
|
||||
value from *FSAVE. This function masks off any of the reserved
|
||||
bits in *FSAVE. */
|
||||
|
||||
void
|
||||
i387_supply_register (int regnum, char *fsave)
|
||||
{
|
||||
/* Most of the FPU control registers occupy only 16 bits in
|
||||
the fsave area. Give those a special treatment. */
|
||||
if (regnum >= FPC_REGNUM
|
||||
&& regnum != FIOFF_REGNUM && regnum != FOOFF_REGNUM)
|
||||
{
|
||||
unsigned char val[4];
|
||||
|
||||
memcpy (val, FSAVE_ADDR (fsave, regnum), 2);
|
||||
val[2] = val[3] = 0;
|
||||
if (regnum == FOP_REGNUM)
|
||||
val[1] &= ((1 << 3) - 1);
|
||||
supply_register (regnum, val);
|
||||
}
|
||||
else
|
||||
supply_register (regnum, FSAVE_ADDR (fsave, regnum));
|
||||
}
|
||||
|
||||
/* Fill GDB's register array with the floating-point register values
|
||||
in *FSAVE. This function masks off any of the reserved
|
||||
bits in *FSAVE. */
|
||||
|
||||
void
|
||||
i387_supply_fsave (char *fsave)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = FP0_REGNUM; i < XMM0_REGNUM; i++)
|
||||
i387_supply_register (i, fsave);
|
||||
}
|
||||
|
||||
/* Fill register REGNUM (if it is a floating-point register) in *FSAVE
|
||||
with the value in GDB's register array. If REGNUM is -1, do this
|
||||
for all registers. This function doesn't touch any of the reserved
|
||||
bits in *FSAVE. */
|
||||
|
||||
void
|
||||
i387_fill_fsave (char *fsave, int regnum)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = FP0_REGNUM; i < XMM0_REGNUM; i++)
|
||||
if (regnum == -1 || regnum == i)
|
||||
{
|
||||
/* Most of the FPU control registers occupy only 16 bits in
|
||||
the fsave area. Give those a special treatment. */
|
||||
if (i >= FPC_REGNUM
|
||||
&& i != FIOFF_REGNUM && i != FOOFF_REGNUM)
|
||||
{
|
||||
unsigned char buf[4];
|
||||
|
||||
regcache_collect (i, buf);
|
||||
|
||||
if (i == FOP_REGNUM)
|
||||
{
|
||||
/* The opcode occupies only 11 bits. Make sure we
|
||||
don't touch the other bits. */
|
||||
buf[1] &= ((1 << 3) - 1);
|
||||
buf[1] |= ((FSAVE_ADDR (fsave, i))[1] & ~((1 << 3) - 1));
|
||||
}
|
||||
memcpy (FSAVE_ADDR (fsave, i), buf, 2);
|
||||
}
|
||||
else
|
||||
regcache_collect (i, FSAVE_ADDR (fsave, i));
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* At fxsave_offset[REGNUM] you'll find the offset to the location in
|
||||
the data structure used by the "fxsave" instruction where GDB
|
||||
register REGNUM is stored. */
|
||||
|
||||
static int fxsave_offset[] =
|
||||
{
|
||||
32, /* FP0_REGNUM through ... */
|
||||
48,
|
||||
64,
|
||||
80,
|
||||
96,
|
||||
112,
|
||||
128,
|
||||
144, /* ... FP7_REGNUM (80 bits each). */
|
||||
0, /* FCTRL_REGNUM (16 bits). */
|
||||
2, /* FSTAT_REGNUM (16 bits). */
|
||||
4, /* FTAG_REGNUM (16 bits). */
|
||||
12, /* FISEG_REGNUM (16 bits). */
|
||||
8, /* FIOFF_REGNUM. */
|
||||
20, /* FOSEG_REGNUM (16 bits). */
|
||||
16, /* FOOFF_REGNUM. */
|
||||
6, /* FOP_REGNUM (bottom 11 bits). */
|
||||
160, /* XMM0_REGNUM through ... */
|
||||
176,
|
||||
192,
|
||||
208,
|
||||
224,
|
||||
240,
|
||||
256,
|
||||
272, /* ... XMM7_REGNUM (128 bits each). */
|
||||
24, /* MXCSR_REGNUM. */
|
||||
};
|
||||
|
||||
#define FXSAVE_ADDR(fxsave, regnum) \
|
||||
(fxsave + fxsave_offset[regnum - FP0_REGNUM])
|
||||
|
||||
static int i387_tag (unsigned char *raw);
|
||||
|
||||
|
||||
/* Fill GDB's register array with the floating-point and SSE register
|
||||
values in *FXSAVE. This function masks off any of the reserved
|
||||
bits in *FXSAVE. */
|
||||
|
||||
void
|
||||
i387_supply_fxsave (char *fxsave)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = FP0_REGNUM; i <= MXCSR_REGNUM; i++)
|
||||
{
|
||||
/* Most of the FPU control registers occupy only 16 bits in
|
||||
the fxsave area. Give those a special treatment. */
|
||||
if (i >= FPC_REGNUM && i < XMM0_REGNUM
|
||||
&& i != FIOFF_REGNUM && i != FOOFF_REGNUM)
|
||||
{
|
||||
unsigned char val[4];
|
||||
|
||||
memcpy (val, FXSAVE_ADDR (fxsave, i), 2);
|
||||
val[2] = val[3] = 0;
|
||||
if (i == FOP_REGNUM)
|
||||
val[1] &= ((1 << 3) - 1);
|
||||
else if (i== FTAG_REGNUM)
|
||||
{
|
||||
/* The fxsave area contains a simplified version of the
|
||||
tag word. We have to look at the actual 80-bit FP
|
||||
data to recreate the traditional i387 tag word. */
|
||||
|
||||
unsigned long ftag = 0;
|
||||
int fpreg;
|
||||
int top;
|
||||
|
||||
top = (((FXSAVE_ADDR (fxsave, FSTAT_REGNUM))[1] >> 3) & 0x7);
|
||||
|
||||
for (fpreg = 7; fpreg >= 0; fpreg--)
|
||||
{
|
||||
int tag;
|
||||
|
||||
if (val[0] & (1 << fpreg))
|
||||
{
|
||||
int regnum = (fpreg + 8 - top) % 8 + FP0_REGNUM;
|
||||
tag = i387_tag (FXSAVE_ADDR (fxsave, regnum));
|
||||
}
|
||||
else
|
||||
tag = 3; /* Empty */
|
||||
|
||||
ftag |= tag << (2 * fpreg);
|
||||
}
|
||||
val[0] = ftag & 0xff;
|
||||
val[1] = (ftag >> 8) & 0xff;
|
||||
}
|
||||
supply_register (i, val);
|
||||
}
|
||||
else
|
||||
supply_register (i, FXSAVE_ADDR (fxsave, i));
|
||||
}
|
||||
}
|
||||
|
||||
/* Fill register REGNUM (if it is a floating-point or SSE register) in
|
||||
*FXSAVE with the value in GDB's register array. If REGNUM is -1, do
|
||||
this for all registers. This function doesn't touch any of the
|
||||
reserved bits in *FXSAVE. */
|
||||
|
||||
void
|
||||
i387_fill_fxsave (char *fxsave, int regnum)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = FP0_REGNUM; i <= MXCSR_REGNUM; i++)
|
||||
if (regnum == -1 || regnum == i)
|
||||
{
|
||||
/* Most of the FPU control registers occupy only 16 bits in
|
||||
the fxsave area. Give those a special treatment. */
|
||||
if (i >= FPC_REGNUM && i < XMM0_REGNUM
|
||||
&& i != FIOFF_REGNUM && i != FDOFF_REGNUM)
|
||||
{
|
||||
unsigned char buf[4];
|
||||
|
||||
regcache_collect (i, buf);
|
||||
|
||||
if (i == FOP_REGNUM)
|
||||
{
|
||||
/* The opcode occupies only 11 bits. Make sure we
|
||||
don't touch the other bits. */
|
||||
buf[1] &= ((1 << 3) - 1);
|
||||
buf[1] |= ((FXSAVE_ADDR (fxsave, i))[1] & ~((1 << 3) - 1));
|
||||
}
|
||||
else if (i == FTAG_REGNUM)
|
||||
{
|
||||
/* Converting back is much easier. */
|
||||
|
||||
unsigned short ftag;
|
||||
int fpreg;
|
||||
|
||||
ftag = (buf[1] << 8) | buf[0];
|
||||
buf[0] = 0;
|
||||
buf[1] = 0;
|
||||
|
||||
for (fpreg = 7; fpreg >= 0; fpreg--)
|
||||
{
|
||||
int tag = (ftag >> (fpreg * 2)) & 3;
|
||||
|
||||
if (tag != 3)
|
||||
buf[0] |= (1 << fpreg);
|
||||
}
|
||||
}
|
||||
memcpy (FXSAVE_ADDR (fxsave, i), buf, 2);
|
||||
}
|
||||
else
|
||||
regcache_collect (i, FXSAVE_ADDR (fxsave, i));
|
||||
}
|
||||
}
|
||||
|
||||
/* Recreate the FTW (tag word) valid bits from the 80-bit FP data in
|
||||
*RAW. */
|
||||
|
||||
static int
|
||||
i387_tag (unsigned char *raw)
|
||||
{
|
||||
int integer;
|
||||
unsigned int exponent;
|
||||
unsigned long fraction[2];
|
||||
|
||||
integer = raw[7] & 0x80;
|
||||
exponent = (((raw[9] & 0x7f) << 8) | raw[8]);
|
||||
fraction[0] = ((raw[3] << 24) | (raw[2] << 16) | (raw[1] << 8) | raw[0]);
|
||||
fraction[1] = (((raw[7] & 0x7f) << 24) | (raw[6] << 16)
|
||||
| (raw[5] << 8) | raw[4]);
|
||||
|
||||
if (exponent == 0x7fff)
|
||||
{
|
||||
/* Special. */
|
||||
return (2);
|
||||
}
|
||||
else if (exponent == 0x0000)
|
||||
{
|
||||
if (fraction[0] == 0x0000 && fraction[1] == 0x0000 && !integer)
|
||||
{
|
||||
/* Zero. */
|
||||
return (1);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Special. */
|
||||
return (2);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (integer)
|
||||
{
|
||||
/* Valid. */
|
||||
return (0);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Special. */
|
||||
return (2);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Native-dependent code for the i387.
|
||||
/* Target-dependent code for the i387.
|
||||
Copyright 2000, 2001 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of GDB.
|
||||
@ -18,8 +18,8 @@
|
||||
Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
Boston, MA 02111-1307, USA. */
|
||||
|
||||
#ifndef I387_NAT_H
|
||||
#define I387_NAT_H
|
||||
#ifndef I387_TDEP_H
|
||||
#define I387_TDEP_H
|
||||
|
||||
/* Fill register REGNUM in GDB's register array with the appropriate
|
||||
value from *FSAVE. This function masks off any of the reserved
|
||||
@ -53,4 +53,4 @@ extern void i387_supply_fxsave (char *fxsave);
|
||||
|
||||
extern void i387_fill_fxsave (char *fxsave, int regnum);
|
||||
|
||||
#endif /* i387-nat.h */
|
||||
#endif /* i387-tdep.h */
|
||||
@ -25,7 +25,7 @@
|
||||
#include "inferior.h"
|
||||
#include "gdbcore.h"
|
||||
#include "regcache.h"
|
||||
#include "i387-nat.h"
|
||||
#include "i387-tdep.h"
|
||||
#include "gdb_assert.h"
|
||||
#include "x86-64-tdep.h"
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user