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