static CORE_ADDR
mips_linux_register_u_offset (struct gdbarch *gdbarch, int regno, int store_p)
{
if (mips_abi_regsize (gdbarch) == 8)
return mips64_linux_register_addr (gdbarch, regno, store_p);
else
return mips_linux_register_addr (gdbarch, regno, store_p);
}
static void
mips_fbsd_collect_gregset (const struct regset *regset,
const struct regcache *regcache,
int regnum, void *gregs, size_t len)
{
size_t regsize = mips_abi_regsize (regcache->arch ());
gdb_assert (len >= MIPS_FBSD_NUM_GREGS * regsize);
mips_fbsd_collect_gregs (regcache, regnum, gregs, regsize);
}
static void
mips_fbsd_supply_fpregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *fpregs, size_t len)
{
size_t regsize = mips_abi_regsize (regcache->arch ());
gdb_assert (len >= MIPS_FBSD_NUM_FPREGS * regsize);
mips_fbsd_supply_fpregs (regcache, regnum, fpregs, regsize);
}
static void
mips_fbsd_supply_gregset (const struct regset *regset,
struct regcache *regcache, int regnum,
const void *gregs, size_t len)
{
size_t regsize = mips_abi_regsize (get_regcache_arch (regcache));
gdb_assert (len >= MIPS_FBSD_NUM_GREGS * regsize);
mips_fbsd_supply_gregs (regcache, regnum, gregs, regsize);
}
static void
mips_fbsd_collect_fpregset (const struct regset *regset,
const struct regcache *regcache,
int regnum, void *fpregs, size_t len)
{
size_t regsize = mips_abi_regsize (get_regcache_arch (regcache));
gdb_assert (len >= MIPS_FBSD_NUM_FPREGS * regsize);
mips_fbsd_collect_fpregs (regcache, regnum, fpregs, regsize);
}
static void
mips_fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
iterate_over_regset_sections_cb *cb,
void *cb_data,
const struct regcache *regcache)
{
size_t regsize = mips_abi_regsize (gdbarch);
cb (".reg", MIPS_FBSD_NUM_GREGS * regsize, MIPS_FBSD_NUM_GREGS * regsize,
&mips_fbsd_gregset, NULL, cb_data);
cb (".reg2", MIPS_FBSD_NUM_FPREGS * regsize, MIPS_FBSD_NUM_FPREGS * regsize,
&mips_fbsd_fpregset, NULL, cb_data);
}
static struct trad_frame_cache *
mips_sde_frame_cache (struct frame_info *this_frame, void **this_cache)
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
const struct mips_regnum *regs = mips_regnum (gdbarch);
const int sizeof_reg_t = mips_abi_regsize (gdbarch);
enum mips_abi abi = mips_abi (gdbarch);
struct trad_frame_cache *cache;
CORE_ADDR xcpt_frame;
CORE_ADDR start_addr;
CORE_ADDR stack_addr;
CORE_ADDR pc;
int i;
if (*this_cache != NULL)
return (struct trad_frame_cache *) *this_cache;
cache = trad_frame_cache_zalloc (this_frame);
*this_cache = cache;
/* The previous registers are held in struct xcptcontext
which is at $sp+offs
struct xcptcontext {
reg_t sr; CP0 Status
reg_t cr; CP0 Cause
reg_t epc; CP0 EPC
reg_t vaddr; CP0 BadVAddr
reg_t regs[32]; General registers
reg_t mdlo; LO
reg_t mdhi; HI
reg_t mdex; ACX
...
};
*/
stack_addr = get_frame_register_signed (this_frame,
gdbarch_sp_regnum (gdbarch));
switch (abi)
{
case MIPS_ABI_O32:
/* 40: XCPTCONTEXT
24: xcpt_gen() argspace (16 bytes)
16: _xcptcall() saved ra, rounded up ( 8 bytes)
00: _xcptcall() argspace (16 bytes) */
xcpt_frame = stack_addr + 40;
break;
case MIPS_ABI_N32:
case MIPS_ABI_N64:
default: /* Wild guess. */
/* 16: XCPTCONTEXT
16: xcpt_gen() argspace ( 0 bytes)
00: _xcptcall() saved ra, rounded up (16 bytes) */
xcpt_frame = stack_addr + 16;
break;
}
trad_frame_set_reg_addr (cache,
MIPS_PS_REGNUM + gdbarch_num_regs (gdbarch),
xcpt_frame + 0 * sizeof_reg_t);
trad_frame_set_reg_addr (cache,
regs->cause + gdbarch_num_regs (gdbarch),
xcpt_frame + 1 * sizeof_reg_t);
trad_frame_set_reg_addr (cache,
regs->pc + gdbarch_num_regs (gdbarch),
xcpt_frame + 2 * sizeof_reg_t);
trad_frame_set_reg_addr (cache,
regs->badvaddr + gdbarch_num_regs (gdbarch),
xcpt_frame + 3 * sizeof_reg_t);
for (i = 0; i < MIPS_NUMREGS; i++)
trad_frame_set_reg_addr (cache,
i + MIPS_ZERO_REGNUM + gdbarch_num_regs (gdbarch),
xcpt_frame + (4 + i) * sizeof_reg_t);
trad_frame_set_reg_addr (cache,
regs->lo + gdbarch_num_regs (gdbarch),
xcpt_frame + 36 * sizeof_reg_t);
trad_frame_set_reg_addr (cache,
regs->hi + gdbarch_num_regs (gdbarch),
xcpt_frame + 37 * sizeof_reg_t);
pc = get_frame_pc (this_frame);
find_pc_partial_function (pc, NULL, &start_addr, NULL);
trad_frame_set_id (cache, frame_id_build (start_addr, stack_addr));
return cache;
}
