[patch 2/3] libffi/m68k: add callframe info (original) (raw)
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- From: zippel at linux-m68k dot org
- To: gcc-patches at gcc dot gnu dot org
- Date: Tue, 27 Feb 2007 18:51:10 +0100
- Subject: [patch 2/3] libffi/m68k: add callframe info
- References: <20070227175108.947774000@linux-m68k.org>
libffi/ 2007-xx-xx Roman Zippel zippel@linux-m68k.org
* configure.ac (HAVE_AS_CFI_PSEUDO_OP): New test.
* configure: Regenerate.
* fficonfig.h.in: Regenerate.
* src/m68k/sysv.S (CFI_STARTPROC,CFI_ENDPROC,
CFI_OFFSET,CFI_DEF_CFA): New macros.
(ffi_call_SYSV): Add callframe annotation.libffi/configure | 64 +++++++++++++++++++++++++++++++++++++++++++++++++ libffi/configure.ac | 12 +++++++++ libffi/fficonfig.h.in | 3 ++ libffi/src/m68k/sysv.S | 17 +++++++++++++ 4 files changed, 96 insertions(+)
Index: gcc/libffi/configure.ac
--- gcc.orig/libffi/configure.ac +++ gcc/libffi/configure.ac @@ -144,6 +144,18 @@ AC_SUBST(HAVE_LONG_DOUBLE) AC_C_BIGENDIAN +AC_CACHE_CHECK([assembler .cfi pseudo-op support], + libffi_cv_as_cfi_pseudo_op, [ + libffi_cv_as_cfi_pseudo_op=unknown + AC_TRY_COMPILE([asm (".cfi_startproc\n\t.cfi_endproc");],, + [libffi_cv_as_cfi_pseudo_op=yes], + [libffi_cv_as_cfi_pseudo_op=no]) +]) +if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then + AC_DEFINE(HAVE_AS_CFI_PSEUDO_OP, 1, + [Define if your assembler supports .cfi_* directives.]) +fi + if test x$TARGET = xSPARC; then AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs], libffi_cv_as_sparc_ua_pcrel, [ Index: gcc/libffi/configure
--- gcc.orig/libffi/configure +++ gcc/libffi/configure @@ -7387,6 +7387,70 @@ presetting ac_cv_c_bigendian=no (or yes) esac +echo "$as_me:$LINENO: checking assembler .cfi pseudo-op support" >&5 +echo ECHON"checkingassembler.cfipseudo−opsupport...ECHO_N "checking assembler .cfi pseudo-op support... ECHON"checkingassembler.cfipseudo−opsupport...ECHO_C" >&6 +if test "${libffi_cv_as_cfi_pseudo_op+set}" = set; then + echo ECHON"(cached)ECHO_N "(cached) ECHON"(cached)ECHO_C" >&6 +else + + libffi_cv_as_cfi_pseudo_op=unknown + cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ +asm (".cfi_startproc\n\t.cfi_endproc"); +int +main () +{ + + ; + return 0; +} +_ACEOF +rm -f conftest.$ac_objext +if { (eval echo "$as_me:$LINENO: "$ac_compile"") >&5 + (eval $ac_compile) 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: $? = $ac_status" >&5 + (exit $ac_status); } && + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' + { (eval echo "$as_me:$LINENO: "$ac_try"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: $? = $ac_status" >&5 + (exit $ac_status); }; } && + { ac_try='test -s conftest.$ac_objext' + { (eval echo "$as_me:$LINENO: "$ac_try"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: $? = $ac_status" >&5 + (exit $ac_status); }; }; then + libffi_cv_as_cfi_pseudo_op=yes +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + +libffi_cv_as_cfi_pseudo_op=no +fi +rm -f conftest.err conftest.$ac_objext conftest.$ac_ext + +fi +echo "$as_me:$LINENO: result: $libffi_cv_as_cfi_pseudo_op" >&5 +echo "${ECHO_T}$libffi_cv_as_cfi_pseudo_op" >&6 +if test "x$libffi_cv_as_cfi_pseudo_op" = xyes; then + +cat >>confdefs.h <<_ACEOF +#define HAVE_AS_CFI_PSEUDO_OP 1 +_ACEOF + +fi + if test x$TARGET = xSPARC; then echo "$as_me:$LINENO: checking assembler and linker support unaligned pc related relocs" >&5 echo ECHON"checkingassemblerandlinkersupportunalignedpcrelatedrelocs...ECHO_N "checking assembler and linker support unaligned pc related relocs... ECHON"checkingassemblerandlinkersupportunalignedpcrelatedrelocs...ECHO_C" >&6 Index: gcc/libffi/fficonfig.h.in
--- gcc.orig/libffi/fficonfig.h.in +++ gcc/libffi/fficonfig.h.in @@ -27,6 +27,9 @@ / #undef HAVE_ALLOCA_H +/ Define if your assembler supports .cfi_* directives. / +#undef HAVE_AS_CFI_PSEUDO_OP + / Define if your assembler supports .register. */ #undef HAVE_AS_REGISTER_PSEUDO_OP Index: gcc/libffi/src/m68k/sysv.S
--- gcc.orig/libffi/src/m68k/sysv.S +++ gcc/libffi/src/m68k/sysv.S @@ -8,6 +8,18 @@ #include <fficonfig.h> #include <ffi.h>
+#ifdef HAVE_AS_CFI_PSEUDO_OP +#define CFI_STARTPROC() .cfi_startproc +#define CFI_OFFSET(reg,off) .cfi_offset reg,off +#define CFI_DEF_CFA(reg,off) .cfi_def_cfa reg,off +#define CFI_ENDPROC() .cfi_endproc +#else +#define CFI_STARTPROC() +#define CFI_OFFSET(reg,off) +#define CFI_DEF_CFA(reg,off) +#define CFI_ENDPROC() +#endif + .text
.globl ffi_call_SYSV@@ -15,8 +27,12 @@ .align 4
ffi_call_SYSV: + CFI_STARTPROC() link %fp,#0 + CFI_OFFSET(14,-8) + CFI_DEF_CFA(14,8) move.l %d2,-(%sp) + CFI_OFFSET(2,-12)
| Make room for all of the new args.
sub.l 12(%fp),%sp@@ -103,4 +119,5 @@ epilogue: move.l (%sp)+,%d2 unlk %fp rts + CFI_ENDPROC() .size ffi_call_SYSV,.-ffi_call_SYSV
--
- References:
- [patch 0/3] libffi/m68k patches (take 2)
* From: zippel
- [patch 0/3] libffi/m68k patches (take 2)
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