2007-03-09 Geoffrey Keating <geoffk@apple.com> * config/rs6000/darwin-fallback.c: Only build on powerpc in 32-bit mode. (handle_syscall): Handle Leopard system call flavour. Index: gcc/config/rs6000/darwin-fallback.c =================================================================== --- gcc/config/rs6000/darwin-fallback.c (revision 122782) +++ gcc/config/rs6000/darwin-fallback.c (working copy) @@ -1,5 +1,5 @@ /* Fallback frame-state unwinder for Darwin. - Copyright (C) 2004, 2005 Free Software Foundation, Inc. + Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc. This file is part of GCC. @@ -27,6 +27,8 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ +#ifdef __ppc__ + #include "tconfig.h" #include "tsystem.h" #include "coretypes.h" @@ -327,9 +329,9 @@ static _Unwind_Ptr return_addr; /* Yay! We're in a Libc that we understand, and it's made a - system call. It'll be one of two kinds: either a Jaguar-style - SYS_sigreturn, or a Panther-style 'syscall' call with 184, which - is also SYS_sigreturn. */ + system call. In Jaguar, this is a direct system call with value 103; + in Panther and Tiger it is a SYS_syscall call for system call number 184, + and in Leopard it is a direct syscall with number 184. */ if (gprs[0] == 0x67 /* SYS_SIGRETURN */) { @@ -339,7 +341,7 @@ is_64 = (uctx->mcsize == UC_FLAVOR64_VEC_SIZE || uctx->mcsize == UC_FLAVOR64_SIZE); } - else if (gprs[0] == 0 && gprs[3] == 184) + else if (gprs[0] == 0 /* SYS_syscall */ && gprs[3] == 184) { int ctxstyle = gprs[5]; uctx = (struct gcc_ucontext *) gprs[4]; @@ -348,6 +350,15 @@ is_64 = (ctxstyle == UC_FLAVOR64_VEC || ctxstyle == UC_TRAD64_VEC || ctxstyle == UC_FLAVOR64 || ctxstyle == UC_TRAD64); } + else if (gprs[0] == 184 /* SYS_sigreturn */) + { + int ctxstyle = gprs[4]; + uctx = (struct gcc_ucontext *) gprs[3]; + is_vector = (ctxstyle == UC_FLAVOR_VEC || ctxstyle == UC_FLAVOR64_VEC + || ctxstyle == UC_TRAD_VEC || ctxstyle == UC_TRAD64_VEC); + is_64 = (ctxstyle == UC_FLAVOR64_VEC || ctxstyle == UC_TRAD64_VEC + || ctxstyle == UC_FLAVOR64 || ctxstyle == UC_TRAD64); + } else return false; @@ -469,3 +480,4 @@ return false; return handle_syscall (fs, gprs, _Unwind_GetCFA (context)); } +#endif