| /* Definitions for ia64-linux target. */ |
| |
| /* This macro is a C statement to print on `stderr' a string describing the |
| particular machine description choice. */ |
| |
| #define TARGET_VERSION fprintf (stderr, " (IA-64) Linux"); |
| |
| /* This is for -profile to use -lc_p instead of -lc. */ |
| #undef CC1_SPEC |
| #define CC1_SPEC "%{profile:-p} %{G*}" |
| |
| /* ??? Maybe this should be in sysv4.h? */ |
| #define CPP_PREDEFINES "\ |
| -D__ia64 -D__ia64__ -D__linux -D__linux__ -D_LONGLONG -Dlinux -Dunix \ |
| -D__LP64__ -D__ELF__ -Asystem=linux -Acpu=ia64 -Amachine=ia64" |
| |
| /* ??? ia64 gas doesn't accept standard svr4 assembler options? */ |
| #undef ASM_SPEC |
| #define ASM_SPEC "-x %{mconstant-gp} %{mauto-pic}" |
| |
| /* Need to override linux.h STARTFILE_SPEC, since it has crtbeginT.o in. */ |
| #undef STARTFILE_SPEC |
| #define STARTFILE_SPEC \ |
| "%{!shared: \ |
| %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \ |
| %{!p:%{profile:gcrt1.o%s} \ |
| %{!profile:crt1.o%s}}}} \ |
| crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}" |
| |
| /* Similar to standard Linux, but adding -ffast-math support. */ |
| #undef ENDFILE_SPEC |
| #define ENDFILE_SPEC \ |
| "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \ |
| %{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s" |
| |
| /* Define this for shared library support because it isn't in the main |
| linux.h file. */ |
| |
| #undef LINK_SPEC |
| #define LINK_SPEC "\ |
| %{shared:-shared} \ |
| %{!shared: \ |
| %{!static: \ |
| %{rdynamic:-export-dynamic} \ |
| %{!dynamic-linker:-dynamic-linker /lib/ld-linux-ia64.so.2}} \ |
| %{static:-static}}" |
| |
| |
| #define DONT_USE_BUILTIN_SETJMP |
| #define JMP_BUF_SIZE 76 |
| |
| /* Output any profiling code before the prologue. */ |
| |
| #undef PROFILE_BEFORE_PROLOGUE |
| #define PROFILE_BEFORE_PROLOGUE 1 |
| |
| /* Override linux.h LINK_EH_SPEC definition. |
| Signalize that because we have fde-glibc, we don't need all C shared libs |
| linked against -lgcc_s. */ |
| #undef LINK_EH_SPEC |
| #define LINK_EH_SPEC "" |
| |
| /* Do code reading to identify a signal frame, and set the frame |
| state data appropriately. See unwind-dw2.c for the structs. */ |
| |
| #ifdef IN_LIBGCC2 |
| #include <signal.h> |
| #include <sys/ucontext.h> |
| |
| #define IA64_GATE_AREA_START 0xa000000000000100LL |
| #define IA64_GATE_AREA_END 0xa000000000010000LL |
| |
| #define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \ |
| if ((CONTEXT)->rp >= IA64_GATE_AREA_START \ |
| && (CONTEXT)->rp < IA64_GATE_AREA_END) \ |
| { \ |
| struct sigframe { \ |
| char scratch[16]; \ |
| unsigned long sig_number; \ |
| struct siginfo *info; \ |
| struct sigcontext *sc; \ |
| } *frame_ = (struct sigframe *)(CONTEXT)->psp; \ |
| struct sigcontext *sc_ = frame_->sc; \ |
| \ |
| /* Restore scratch registers in case the unwinder needs to \ |
| refer to a value stored in one of them. */ \ |
| { \ |
| int i_; \ |
| \ |
| for (i_ = 2; i_ < 4; i_++) \ |
| (CONTEXT)->ireg[i_ - 2].loc = &sc_->sc_gr[i_]; \ |
| for (i_ = 8; i_ < 12; i_++) \ |
| (CONTEXT)->ireg[i_ - 2].loc = &sc_->sc_gr[i_]; \ |
| for (i_ = 14; i_ < 32; i_++) \ |
| (CONTEXT)->ireg[i_ - 2].loc = &sc_->sc_gr[i_]; \ |
| } \ |
| \ |
| (CONTEXT)->pfs_loc = &(sc_->sc_ar_pfs); \ |
| (CONTEXT)->lc_loc = &(sc_->sc_ar_lc); \ |
| (CONTEXT)->unat_loc = &(sc_->sc_ar_unat); \ |
| (CONTEXT)->pr = sc_->sc_pr; \ |
| (CONTEXT)->psp = sc_->sc_gr[12]; \ |
| \ |
| /* Don't touch the branch registers. The kernel doesn't \ |
| pass the preserved branch registers in the sigcontext but \ |
| leaves them intact, so there's no need to do anything \ |
| with them here. */ \ |
| \ |
| { \ |
| unsigned long sof = sc_->sc_cfm & 0x7f; \ |
| (CONTEXT)->bsp = (unsigned long) \ |
| ia64_rse_skip_regs ((unsigned long *)(sc_->sc_ar_bsp), -sof); \ |
| } \ |
| \ |
| (FS)->curr.reg[UNW_REG_RP].where = UNW_WHERE_SPREL; \ |
| (FS)->curr.reg[UNW_REG_RP].val \ |
| = (unsigned long)&(sc_->sc_ip) - (CONTEXT)->psp; \ |
| (FS)->curr.reg[UNW_REG_RP].when = -1; \ |
| \ |
| goto SUCCESS; \ |
| } |
| #endif /* IN_LIBGCC2 */ |