124 lines
4.1 KiB
C
124 lines
4.1 KiB
C
/* 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 { \
|
|
builtin_assert("system=linux"); \
|
|
builtin_define_std("linux"); \
|
|
builtin_define_std("unix"); \
|
|
builtin_define("__gnu_linux__"); \
|
|
builtin_define("_LONGLONG"); \
|
|
} while (0)
|
|
|
|
/* 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 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. */
|
|
|
|
#ifdef IN_LIBGCC2
|
|
#include <signal.h>
|
|
#include <sys/ucontext.h>
|
|
|
|
#define IA64_GATE_AREA_START 0xa000000000000100LL
|
|
#define IA64_GATE_AREA_END 0xa000000000020000LL
|
|
|
|
#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)->br_loc[0] = &(sc_->sc_br[0]); \
|
|
(CONTEXT)->bsp = sc_->sc_ar_bsp; \
|
|
(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; \
|
|
\
|
|
/* Don't touch the branch registers o.t. b0. 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 */
|