/* Target-dependent code for the NDS32 architecture, for GDB.
- Copyright (C) 2013-2016 Free Software Foundation, Inc.
+ Copyright (C) 2013-2018 Free Software Foundation, Inc.
Contributed by Andes Technology Corporation.
This file is part of GDB.
#define N32_FLDI_SP \
N32_TYPE2 (LDC, 0, REG_SP, 0)
-extern void _initialize_nds32_tdep (void);
-
/* Use an invalid address value as 'not available' marker. */
enum { REG_UNAVAIL = (CORE_ADDR) -1 };
return align_down (sp, 8);
}
-/* Implement the "breakpoint_from_pc" gdbarch method.
-
- Use the program counter to determine the contents and size of a
- breakpoint instruction. Return a pointer to a string of bytes that
- encode a breakpoint instruction, store the length of the string in
- *LENPTR and optionally adjust *PCPTR to point to the correct memory
- location for inserting the breakpoint. */
+/* The same insn machine code is used for little-endian and big-endian. */
+constexpr gdb_byte nds32_break_insn[] = { 0xEA, 0x00 };
-static const gdb_byte *
-nds32_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr,
- int *lenptr)
-{
- /* The same insn machine code is used for little-endian and big-endian. */
- static const gdb_byte break_insn[] = { 0xEA, 0x00 };
-
- *lenptr = sizeof (break_insn);
- return break_insn;
-}
+typedef BP_MANIPULATION (nds32_break_insn) nds32_breakpoint;
/* Implement the "dwarf2_reg_to_regnum" gdbarch method. */
static enum register_status
nds32_pseudo_register_read (struct gdbarch *gdbarch,
- struct regcache *regcache, int regnum,
+ readable_regcache *regcache, int regnum,
gdb_byte *buf)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
gdb_byte reg_buf[8];
int offset, fdr_regnum;
- enum register_status status = REG_UNKNOWN;
+ enum register_status status;
- /* Sanity check. */
- if (tdep->fpu_freg == -1 || tdep->use_pseudo_fsrs == 0)
- return status;
+ /* This function is registered in nds32_gdbarch_init only after these are
+ set. */
+ gdb_assert (tdep->fpu_freg != -1);
+ gdb_assert (tdep->use_pseudo_fsrs != 0);
regnum -= gdbarch_num_regs (gdbarch);
offset = (regnum & 1) ? 0 : 4;
fdr_regnum = NDS32_FD0_REGNUM + (regnum >> 1);
- status = regcache_raw_read (regcache, fdr_regnum, reg_buf);
+ status = regcache->raw_read (fdr_regnum, reg_buf);
if (status == REG_VALID)
memcpy (buf, reg_buf + offset, 4);
+
+ return status;
}
- return status;
+ gdb_assert_not_reached ("invalid pseudo register number");
}
/* Implement the "pseudo_register_write" gdbarch method. */
gdb_byte reg_buf[8];
int offset, fdr_regnum;
- /* Sanity check. */
- if (tdep->fpu_freg == -1 || tdep->use_pseudo_fsrs == 0)
- return;
+ /* This function is registered in nds32_gdbarch_init only after these are
+ set. */
+ gdb_assert (tdep->fpu_freg != -1);
+ gdb_assert (tdep->use_pseudo_fsrs != 0);
regnum -= gdbarch_num_regs (gdbarch);
offset = (regnum & 1) ? 0 : 4;
fdr_regnum = NDS32_FD0_REGNUM + (regnum >> 1);
- regcache_raw_read (regcache, fdr_regnum, reg_buf);
+ regcache->raw_read (fdr_regnum, reg_buf);
memcpy (reg_buf + offset, buf, 4);
- regcache_raw_write (regcache, fdr_regnum, reg_buf);
+ regcache->raw_write (fdr_regnum, reg_buf);
+ return;
}
+
+ gdb_assert_not_reached ("invalid pseudo register number");
}
\f
/* Helper function for NDS32 ABI. Return true if FPRs can be used
switch (len)
{
case 4:
- regcache_cooked_write (regcache,
- tdep->fs0_regnum + foff, val);
+ regcache->cooked_write (tdep->fs0_regnum + foff, val);
foff++;
break;
case 8:
- regcache_cooked_write (regcache,
- NDS32_FD0_REGNUM + (foff >> 1), val);
+ regcache->cooked_write (NDS32_FD0_REGNUM + (foff >> 1), val);
foff += 2;
break;
default:
if (abi_use_fpr && calling_use_fpr)
{
if (len == 4)
- regcache_cooked_read (regcache, tdep->fs0_regnum, valbuf);
+ regcache->cooked_read (tdep->fs0_regnum, valbuf);
else if (len == 8)
- regcache_cooked_read (regcache, NDS32_FD0_REGNUM, valbuf);
+ regcache->cooked_read (NDS32_FD0_REGNUM, valbuf);
else
internal_error (__FILE__, __LINE__,
_("Cannot extract return value of %d bytes "
}
else if (len == 4)
{
- regcache_cooked_read (regcache, NDS32_R0_REGNUM, valbuf);
+ regcache->cooked_read (NDS32_R0_REGNUM, valbuf);
}
else if (len < 8)
{
}
else
{
- regcache_cooked_read (regcache, NDS32_R0_REGNUM, valbuf);
- regcache_cooked_read (regcache, NDS32_R0_REGNUM + 1, valbuf + 4);
+ regcache->cooked_read (NDS32_R0_REGNUM, valbuf);
+ regcache->cooked_read (NDS32_R0_REGNUM + 1, valbuf + 4);
}
}
}
if (abi_use_fpr && calling_use_fpr)
{
if (len == 4)
- regcache_cooked_write (regcache, tdep->fs0_regnum, valbuf);
+ regcache->cooked_write (tdep->fs0_regnum, valbuf);
else if (len == 8)
- regcache_cooked_write (regcache, NDS32_FD0_REGNUM, valbuf);
+ regcache->cooked_write (NDS32_FD0_REGNUM, valbuf);
else
internal_error (__FILE__, __LINE__,
_("Cannot store return value of %d bytes "
}
else if (len == 4)
{
- regcache_cooked_write (regcache, NDS32_R0_REGNUM, valbuf);
+ regcache->cooked_write (NDS32_R0_REGNUM, valbuf);
}
else if (len < 8)
{
}
else
{
- regcache_cooked_write (regcache, NDS32_R0_REGNUM, valbuf);
- regcache_cooked_write (regcache, NDS32_R0_REGNUM + 1, valbuf + 4);
+ regcache->cooked_write (NDS32_R0_REGNUM, valbuf);
+ regcache->cooked_write (NDS32_R0_REGNUM + 1, valbuf + 4);
}
}
}
gdbarch = gdbarch_alloc (&info, tdep);
+ set_gdbarch_wchar_bit (gdbarch, 16);
+ set_gdbarch_wchar_signed (gdbarch, 0);
+
if (fpu_freg == -1)
num_regs = NDS32_NUM_REGS;
else if (use_pseudo_fsrs == 1)
nds32_add_reggroups (gdbarch);
/* Hook in ABI-specific overrides, if they have been registered. */
- info.tdep_info = (void *) tdesc_data;
+ info.tdesc_data = tdesc_data;
gdbarch_init_osabi (info, gdbarch);
/* Override tdesc_register callbacks for system registers. */
set_gdbarch_skip_prologue (gdbarch, nds32_skip_prologue);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
- set_gdbarch_breakpoint_from_pc (gdbarch, nds32_breakpoint_from_pc);
+ set_gdbarch_breakpoint_kind_from_pc (gdbarch,
+ nds32_breakpoint::kind_from_pc);
+ set_gdbarch_sw_breakpoint_from_kind (gdbarch,
+ nds32_breakpoint::bp_from_kind);
set_gdbarch_frame_align (gdbarch, nds32_frame_align);
frame_base_set_default (gdbarch, &nds32_frame_base);
- set_gdbarch_print_insn (gdbarch, print_insn_nds32);
-
/* Handle longjmp. */
set_gdbarch_get_longjmp_target (gdbarch, nds32_get_longjmp_target);
projects / deliverable / binutils-gdb.git / blobdiff