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/* 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 <signal.h>
#include <sys/ucontext.h>
#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 */
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