/* Target-machine dependent code for Nios II, for GDB.
- Copyright (C) 2012-2017 Free Software Foundation, Inc.
+ Copyright (C) 2012-2019 Free Software Foundation, Inc.
Contributed by Peter Brookes (pbrookes@altera.com)
and Andrew Draper (adraper@altera.com).
Contributed by Mentor Graphics, Inc.
#include "value.h"
#include "symfile.h"
#include "arch-utils.h"
-#include "floatformat.h"
#include "infcall.h"
#include "regset.h"
#include "target-descriptions.h"
/* Return values of up to 8 bytes are returned in $r2 $r3. */
if (len <= register_size (gdbarch, NIOS2_R2_REGNUM))
- regcache_cooked_read (regcache, NIOS2_R2_REGNUM, valbuf);
+ regcache->cooked_read (NIOS2_R2_REGNUM, valbuf);
else
{
gdb_assert (len <= (register_size (gdbarch, NIOS2_R2_REGNUM)
+ register_size (gdbarch, NIOS2_R3_REGNUM)));
- regcache_cooked_read (regcache, NIOS2_R2_REGNUM, valbuf);
- regcache_cooked_read (regcache, NIOS2_R3_REGNUM, valbuf + 4);
+ regcache->cooked_read (NIOS2_R2_REGNUM, valbuf);
+ regcache->cooked_read (NIOS2_R3_REGNUM, valbuf + 4);
}
}
/* Return values of up to 8 bytes are returned in $r2 $r3. */
if (len <= register_size (gdbarch, NIOS2_R2_REGNUM))
- regcache_cooked_write (regcache, NIOS2_R2_REGNUM, valbuf);
+ regcache->cooked_write (NIOS2_R2_REGNUM, valbuf);
else
{
gdb_assert (len <= (register_size (gdbarch, NIOS2_R2_REGNUM)
+ register_size (gdbarch, NIOS2_R3_REGNUM)));
- regcache_cooked_write (regcache, NIOS2_R2_REGNUM, valbuf);
- regcache_cooked_write (regcache, NIOS2_R3_REGNUM, valbuf + 4);
+ regcache->cooked_write (NIOS2_R2_REGNUM, valbuf);
+ regcache->cooked_write (NIOS2_R3_REGNUM, valbuf + 4);
}
}
struct reg_value *value = cache->reg_value;
struct reg_value temp_value[NIOS2_NUM_REGS];
- int i;
-
/* Save the starting PC so we can correct the pc after running
through the prolog, using symbol info. */
CORE_ADDR pc = start_pc;
/* If any registers were saved on the stack before then
we can't backtrace into them now. */
- for (i = 0 ; i < NIOS2_NUM_REGS ; i++)
+ for (int i = 0 ; i < NIOS2_NUM_REGS ; i++)
{
if (cache->reg_saved[i].basereg == NIOS2_SP_REGNUM)
cache->reg_saved[i].basereg = -1;
/* PUSH.N {reglist}, adjust
or
STWM {reglist}, --(SP)[, writeback] */
- int i;
int off = 0;
if (ra != NIOS2_SP_REGNUM || id != 0)
part of the prologue. */
break;
- for (i = 31; i >= 0; i--)
+ for (int i = 31; i >= 0; i--)
if (reglist & (1 << i))
{
int orig = value[i].reg;
if ra has been stored into r8 beforehand and if it's
before the stack adjust.
Note mcount corrupts r2-r3, r9-r15 & ra. */
- for (i = 2 ; i <= 3 ; i++)
+ for (int i = 2 ; i <= 3 ; i++)
value[i].reg = -1;
- for (i = 9 ; i <= 15 ; i++)
+ for (int i = 9 ; i <= 15 ; i++)
value[i].reg = -1;
value[NIOS2_RA_REGNUM].reg = -1;
/* Adjust all the saved registers such that they contain addresses
instead of offsets. */
- for (i = 0; i < NIOS2_NUM_REGS; i++)
+ for (int i = 0; i < NIOS2_NUM_REGS; i++)
if (cache->reg_saved[i].basereg == NIOS2_SP_REGNUM)
{
cache->reg_saved[i].basereg = NIOS2_Z_REGNUM;
cache->reg_saved[i].addr += frame_high;
}
- for (i = 0; i < NIOS2_NUM_REGS; i++)
+ for (int i = 0; i < NIOS2_NUM_REGS; i++)
if (cache->reg_saved[i].basereg == NIOS2_GP_REGNUM)
{
CORE_ADDR gp = get_frame_register_unsigned (this_frame,
}
}
-/* Implement the print_insn gdbarch method. */
-
-static int
-nios2_print_insn (bfd_vma memaddr, disassemble_info *info)
-{
- if (info->endian == BFD_ENDIAN_BIG)
- return print_insn_big_nios2 (memaddr, info);
- else
- return print_insn_little_nios2 (memaddr, info);
-}
-
-
/* Implement the frame_align gdbarch method. */
static CORE_ADDR
nios2_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
struct regcache *regcache, CORE_ADDR bp_addr,
int nargs, struct value **args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_addr)
+ function_call_return_method return_method,
+ CORE_ADDR struct_addr)
{
int argreg;
- int float_argreg;
int argnum;
- int len = 0;
+ int arg_space = 0;
int stack_offset = 0;
- CORE_ADDR func_addr = find_function_addr (function, NULL);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
/* Set the return address register to point to the entry point of
/* Now make space on the stack for the args. */
for (argnum = 0; argnum < nargs; argnum++)
- len += align_up (TYPE_LENGTH (value_type (args[argnum])), 4);
- sp -= len;
+ arg_space += align_up (TYPE_LENGTH (value_type (args[argnum])), 4);
+ sp -= arg_space;
/* Initialize the register pointer. */
argreg = NIOS2_FIRST_ARGREG;
/* The struct_return pointer occupies the first parameter-passing
register. */
- if (struct_return)
+ if (return_method == return_method_struct)
regcache_cooked_write_unsigned (regcache, argreg++, struct_addr);
/* Now load as many as possible of the first arguments into
static CORE_ADDR
nios2_get_next_pc (struct regcache *regcache, CORE_ADDR pc)
{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch *gdbarch = regcache->arch ();
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
unsigned long mach = gdbarch_bfd_arch_info (gdbarch)->mach;
unsigned int insn;
static std::vector<CORE_ADDR>
nios2_software_single_step (struct regcache *regcache)
{
- struct gdbarch *gdbarch = get_regcache_arch (regcache);
CORE_ADDR next_pc = nios2_get_next_pc (regcache, regcache_read_pc (regcache));
return {next_pc};
return 1;
}
+/* Implement the type_align gdbarch function. */
+
+static ULONGEST
+nios2_type_align (struct gdbarch *gdbarch, struct type *type)
+{
+ type = check_typedef (type);
+ return std::min<ULONGEST> (4, TYPE_LENGTH (type));
+}
+
+/* Implement the gcc_target_options gdbarch method. */
+static char *
+nios2_gcc_target_options (struct gdbarch *gdbarch)
+{
+ /* GCC doesn't know "-m32". */
+ return NULL;
+}
+
/* Initialize the Nios II gdbarch. */
static struct gdbarch *
set_gdbarch_float_bit (gdbarch, 32);
set_gdbarch_double_bit (gdbarch, 64);
+ set_gdbarch_type_align (gdbarch, nios2_type_align);
+
set_gdbarch_float_format (gdbarch, floatformats_ieee_single);
set_gdbarch_double_format (gdbarch, floatformats_ieee_double);
/* Single stepping. */
set_gdbarch_software_single_step (gdbarch, nios2_software_single_step);
+ /* Target options for compile. */
+ set_gdbarch_gcc_target_options (gdbarch, nios2_gcc_target_options);
+
/* Hook in ABI-specific overrides, if they have been registered. */
gdbarch_init_osabi (info, gdbarch);
frame_base_set_default (gdbarch, &nios2_frame_base);
- set_gdbarch_print_insn (gdbarch, nios2_print_insn);
-
/* Enable inferior call support. */
set_gdbarch_push_dummy_call (gdbarch, nios2_push_dummy_call);
return gdbarch;
}
-extern initialize_file_ftype _initialize_nios2_tdep; /* -Wmissing-prototypes */
-
void
_initialize_nios2_tdep (void)
{
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