sparc-linux-tdep.c [plain text]
#include "defs.h"
#include "floatformat.h"
#include "frame.h"
#include "frame-unwind.h"
#include "gdbarch.h"
#include "gdbcore.h"
#include "osabi.h"
#include "regcache.h"
#include "solib-svr4.h"
#include "symtab.h"
#include "trad-frame.h"
#include "tramp-frame.h"
#include "sparc-tdep.h"
static void sparc32_linux_sigframe_init (const struct tramp_frame *self,
struct frame_info *next_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func);
static const struct tramp_frame sparc32_linux_sigframe =
{
SIGTRAMP_FRAME,
4,
{
{ 0x821020d8, -1 },
{ 0x91d02010, -1 },
{ TRAMP_SENTINEL_INSN, -1 }
},
sparc32_linux_sigframe_init
};
static const struct tramp_frame sparc32_linux_rt_sigframe =
{
SIGTRAMP_FRAME,
4,
{
{ 0x82102065, -1 },
{ 0x91d02010, -1 },
{ TRAMP_SENTINEL_INSN, -1 }
},
sparc32_linux_sigframe_init
};
static void
sparc32_linux_sigframe_init (const struct tramp_frame *self,
struct frame_info *next_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func)
{
CORE_ADDR base, addr;
int regnum;
base = frame_unwind_register_unsigned (next_frame, SPARC_O1_REGNUM);
if (self == &sparc32_linux_rt_sigframe)
base += 128;
trad_frame_set_reg_addr (this_cache, SPARC32_PSR_REGNUM, base + 0);
trad_frame_set_reg_addr (this_cache, SPARC32_PC_REGNUM, base + 4);
trad_frame_set_reg_addr (this_cache, SPARC32_NPC_REGNUM, base + 8);
trad_frame_set_reg_addr (this_cache, SPARC32_Y_REGNUM, base + 12);
addr = base + 20;
for (regnum = SPARC_G1_REGNUM; regnum <= SPARC_O7_REGNUM; regnum++)
{
trad_frame_set_reg_addr (this_cache, regnum, addr);
addr += 4;
}
base = addr = frame_unwind_register_unsigned (next_frame, SPARC_SP_REGNUM);
for (regnum = SPARC_L0_REGNUM; regnum <= SPARC_I7_REGNUM; regnum++)
{
trad_frame_set_reg_addr (this_cache, regnum, addr);
addr += 4;
}
trad_frame_set_id (this_cache, frame_id_build (base, func));
}
static void
sparc32_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
tramp_frame_prepend_unwinder (gdbarch, &sparc32_linux_sigframe);
tramp_frame_prepend_unwinder (gdbarch, &sparc32_linux_rt_sigframe);
set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
tdep->plt_entry_size = 12;
set_gdbarch_long_double_bit (gdbarch, 64);
set_gdbarch_long_double_format (gdbarch, &floatformat_ieee_double_big);
set_gdbarch_fetch_tls_load_module_address (gdbarch,
svr4_fetch_objfile_link_map);
}
extern void _initialize_sparc_linux_tdep (void);
void
_initialize_sparc_linux_tdep (void)
{
gdbarch_register_osabi (bfd_arch_sparc, 0, GDB_OSABI_LINUX,
sparc32_linux_init_abi);
}