/* 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*}" /* Target OS builtins. */ #define TARGET_OS_CPP_BUILTINS() \ do { \ LINUX_TARGET_OS_CPP_BUILTINS(); \ builtin_define("_LONGLONG"); \ } while (0) /* Need to override linux.h STARTFILE_SPEC, since it has crtbeginT.o in. */ #undef STARTFILE_SPEC #ifdef HAVE_LD_PIE #define STARTFILE_SPEC \ "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}\ crti.o%s %{shared|pie:crtbeginS.o%s;:crtbegin.o%s}" #else #define STARTFILE_SPEC \ "%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}}\ crti.o%s %{shared|pie:crtbeginS.o%s;:crtbegin.o%s}" #endif /* Similar to standard Linux, but adding -ffast-math support. */ #undef ENDFILE_SPEC #define ENDFILE_SPEC \ "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \ %{shared|pie:crtendS.o%s;:crtend.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 JMP_BUF_SIZE 76 /* 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. */ /* This works only for glibc-2.3 and later, because sigcontext is different in glibc-2.2.4. */ #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3) #ifdef IN_LIBGCC2 #include #include #define IA64_GATE_AREA_START 0xa000000000000100LL #define IA64_GATE_AREA_END 0xa000000000030000LL #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)->fpsr_loc = &(sc_->sc_ar_fpsr); \ (CONTEXT)->pfs_loc = &(sc_->sc_ar_pfs); \ (CONTEXT)->lc_loc = &(sc_->sc_ar_lc); \ (CONTEXT)->unat_loc = &(sc_->sc_ar_unat); \ (CONTEXT)->br_loc[0] = &(sc_->sc_br[0]); \ (CONTEXT)->br_loc[6] = &(sc_->sc_br[6]); \ (CONTEXT)->br_loc[7] = &(sc_->sc_br[7]); \ (CONTEXT)->pr = sc_->sc_pr; \ (CONTEXT)->psp = sc_->sc_gr[12]; \ (CONTEXT)->gp = sc_->sc_gr[1]; \ /* Signal frame doesn't have an associated reg. stack frame \ other than what we adjust for below. */ \ (FS) -> no_reg_stack_frame = 1; \ \ if (sc_->sc_rbs_base) \ { \ /* Need to switch from alternate register backing store. */ \ long ndirty, loadrs = sc_->sc_loadrs >> 16; \ unsigned long alt_bspstore = (CONTEXT)->bsp - loadrs; \ unsigned long bspstore; \ unsigned long *ar_bsp = (unsigned long *)(sc_->sc_ar_bsp); \ \ ndirty = ia64_rse_num_regs ((unsigned long *) alt_bspstore, \ (unsigned long *) (CONTEXT)->bsp);\ bspstore = (unsigned long) \ ia64_rse_skip_regs (ar_bsp, -ndirty); \ ia64_copy_rbs ((CONTEXT), bspstore, alt_bspstore, loadrs, \ sc_->sc_ar_rnat); \ } \ \ /* Don't touch the branch registers o.t. b0, b6 and b7. \ 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; \ } #define MD_HANDLE_UNWABI(CONTEXT, FS) \ if ((FS)->unwabi == ((3 << 8) | 's') \ || (FS)->unwabi == ((0 << 8) | 's')) \ { \ 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)->br_loc[0] = &(sc_->sc_br[0]); \ (CONTEXT)->br_loc[6] = &(sc_->sc_br[6]); \ (CONTEXT)->br_loc[7] = &(sc_->sc_br[7]); \ (CONTEXT)->pr = sc_->sc_pr; \ (CONTEXT)->gp = sc_->sc_gr[1]; \ /* Signal frame doesn't have an associated reg. stack frame \ other than what we adjust for below. */ \ (FS) -> no_reg_stack_frame = 1; \ \ if (sc_->sc_rbs_base) \ { \ /* Need to switch from alternate register backing store. */ \ long ndirty, loadrs = sc_->sc_loadrs >> 16; \ unsigned long alt_bspstore = (CONTEXT)->bsp - loadrs; \ unsigned long bspstore; \ unsigned long *ar_bsp = (unsigned long *)(sc_->sc_ar_bsp); \ \ ndirty = ia64_rse_num_regs ((unsigned long *) alt_bspstore, \ (unsigned long *) (CONTEXT)->bsp);\ bspstore = (unsigned long) \ ia64_rse_skip_regs (ar_bsp, -ndirty); \ ia64_copy_rbs ((CONTEXT), bspstore, alt_bspstore, loadrs, \ sc_->sc_ar_rnat); \ } \ \ /* Don't touch the branch registers o.t. b0, b6 and b7. \ 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); \ } \ \ /* pfs_loc already set above. Without this pfs_loc would point \ incorrectly to sc_cfm instead of sc_ar_pfs. */ \ (FS)->curr.reg[UNW_REG_PFS].where = UNW_WHERE_NONE; \ } #endif /* IN_LIBGCC2 */ #endif /* glibc-2.3 or better */