#include "defs.h"
#include "frame.h"
#include "inferior.h"
#include "target.h"
#include "value.h"
#include "bfd.h"
#include "gdb_string.h"
#include "gdbcore.h"
#include "objfiles.h"
#include "arch-utils.h"
#include "regcache.h"
#include "symtab.h"
#include "dis-asm.h"
struct gdbarch_tdep
{
};
struct frame_extra_info
{
};
enum {
E_R0_REGNUM,
E_R1_REGNUM,
E_R2_REGNUM, E_SAVE1_START_REGNUM = E_R2_REGNUM, E_SAVE1_END_REGNUM = E_R2_REGNUM,
E_R3_REGNUM, E_SP_REGNUM = E_R3_REGNUM,
E_R4_REGNUM,
E_R5_REGNUM,
E_R6_REGNUM, E_ARG0_REGNUM = E_R6_REGNUM,
E_R7_REGNUM,
E_R8_REGNUM,
E_R9_REGNUM, E_ARGLAST_REGNUM = E_R9_REGNUM,
E_R10_REGNUM, E_V0_REGNUM = E_R10_REGNUM,
E_R11_REGNUM, E_V1_REGNUM = E_R11_REGNUM,
E_R12_REGNUM,
E_R13_REGNUM,
E_R14_REGNUM,
E_R15_REGNUM,
E_R16_REGNUM,
E_R17_REGNUM,
E_R18_REGNUM,
E_R19_REGNUM,
E_R20_REGNUM, E_SAVE2_START_REGNUM = E_R20_REGNUM,
E_R21_REGNUM,
E_R22_REGNUM,
E_R23_REGNUM,
E_R24_REGNUM,
E_R25_REGNUM,
E_R26_REGNUM,
E_R27_REGNUM,
E_R28_REGNUM,
E_R29_REGNUM, E_SAVE2_END_REGNUM = E_R29_REGNUM, E_FP_RAW_REGNUM = E_R29_REGNUM,
E_R30_REGNUM, E_EP_REGNUM = E_R30_REGNUM,
E_R31_REGNUM, E_SAVE3_START_REGNUM = E_R31_REGNUM, E_SAVE3_END_REGNUM = E_R31_REGNUM, E_RP_REGNUM = E_R31_REGNUM,
E_R32_REGNUM, E_SR0_REGNUM = E_R32_REGNUM,
E_R33_REGNUM,
E_R34_REGNUM,
E_R35_REGNUM,
E_R36_REGNUM,
E_R37_REGNUM, E_PS_REGNUM = E_R37_REGNUM,
E_R38_REGNUM,
E_R39_REGNUM,
E_R40_REGNUM,
E_R41_REGNUM,
E_R42_REGNUM,
E_R43_REGNUM,
E_R44_REGNUM,
E_R45_REGNUM,
E_R46_REGNUM,
E_R47_REGNUM,
E_R48_REGNUM,
E_R49_REGNUM,
E_R50_REGNUM,
E_R51_REGNUM,
E_R52_REGNUM, E_CTBP_REGNUM = E_R52_REGNUM,
E_R53_REGNUM,
E_R54_REGNUM,
E_R55_REGNUM,
E_R56_REGNUM,
E_R57_REGNUM,
E_R58_REGNUM,
E_R59_REGNUM,
E_R60_REGNUM,
E_R61_REGNUM,
E_R62_REGNUM,
E_R63_REGNUM,
E_R64_REGNUM, E_PC_REGNUM = E_R64_REGNUM,
E_R65_REGNUM, E_FP_REGNUM = E_R65_REGNUM,
E_NUM_REGS
};
enum
{
v850_reg_size = 4
};
enum
{
E_ALL_REGS_SIZE = (E_NUM_REGS) * v850_reg_size
};
enum
{
E_MAX_RETTYPE_SIZE_IN_REGS = 2 * v850_reg_size
};
static LONGEST call_dummy_nil[] = {0};
static char *v850_generic_reg_names[] =
{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
"eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7",
"sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
"sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23",
"sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31",
"pc", "fp"
};
static char *v850e_reg_names[] =
{
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
"eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7",
"sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
"ctpc", "ctpsw", "dbpc", "dbpsw", "ctbp", "sr21", "sr22", "sr23",
"sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31",
"pc", "fp"
};
char **v850_register_names = v850_generic_reg_names;
struct
{
char **regnames;
int mach;
}
v850_processor_type_table[] =
{
{
v850_generic_reg_names, bfd_mach_v850
}
,
{
v850e_reg_names, bfd_mach_v850e
}
,
{
v850e_reg_names, bfd_mach_v850e1
}
,
{
NULL, 0
}
};
struct pifsr
{
int framereg;
int offset;
int cur_frameoffset;
int reg;
};
struct prologue_info
{
int framereg;
int frameoffset;
int start_function;
struct pifsr *pifsrs;
};
static CORE_ADDR v850_scan_prologue (CORE_ADDR pc, struct prologue_info *fs);
static const char *
v850_register_name (int regnum)
{
if (regnum < 0 || regnum >= E_NUM_REGS)
internal_error (__FILE__, __LINE__,
"v850_register_name: illegal register number %d",
regnum);
else
return v850_register_names[regnum];
}
static int
v850_register_byte (int regnum)
{
if (regnum < 0 || regnum >= E_NUM_REGS)
internal_error (__FILE__, __LINE__,
"v850_register_byte: illegal register number %d",
regnum);
else
return regnum * v850_reg_size;
}
static int
v850_register_raw_size (int regnum)
{
if (regnum < 0 || regnum >= E_NUM_REGS)
internal_error (__FILE__, __LINE__,
"v850_register_raw_size: illegal register number %d",
regnum);
else
return v850_reg_size;
}
static struct type *
v850_reg_virtual_type (int regnum)
{
if (regnum < 0 || regnum >= E_NUM_REGS)
internal_error (__FILE__, __LINE__,
"v850_register_virtual_type: illegal register number %d",
regnum);
else if (regnum == E_PC_REGNUM)
return builtin_type_uint32;
else
return builtin_type_int32;
}
static int
v850_type_is_scalar (struct type *t)
{
return (TYPE_CODE (t) != TYPE_CODE_STRUCT
&& TYPE_CODE (t) != TYPE_CODE_UNION
&& TYPE_CODE (t) != TYPE_CODE_ARRAY);
}
static int
v850_use_struct_convention (int gcc_p, struct type *type)
{
int i;
struct type *fld_type, *tgt_type;
if (TYPE_LENGTH (type) > 8)
return 1;
if (v850_type_is_scalar (type))
return 0;
if ((TYPE_CODE (type) == TYPE_CODE_STRUCT
|| TYPE_CODE (type) == TYPE_CODE_UNION)
&& TYPE_NFIELDS (type) == 1)
{
fld_type = TYPE_FIELD_TYPE (type, 0);
if (v850_type_is_scalar (fld_type) && TYPE_LENGTH (fld_type) >= 4)
return 0;
if (TYPE_CODE (fld_type) == TYPE_CODE_ARRAY)
{
tgt_type = TYPE_TARGET_TYPE (fld_type);
if (v850_type_is_scalar (tgt_type) && TYPE_LENGTH (tgt_type) >= 4)
return 0;
}
}
if (TYPE_CODE (type) == TYPE_CODE_STRUCT
&& v850_type_is_scalar (TYPE_FIELD_TYPE (type, 0))
&& TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) == 4)
{
for (i = 1; i < TYPE_NFIELDS (type); ++i)
{
fld_type = TYPE_FIELD_TYPE (type, 0);
if (TYPE_CODE (fld_type) == TYPE_CODE_ARRAY)
{
tgt_type = TYPE_TARGET_TYPE (fld_type);
if (TYPE_LENGTH (fld_type) >= 0 && TYPE_LENGTH (tgt_type) >= 0
&& TYPE_LENGTH (fld_type) / TYPE_LENGTH (tgt_type) > 2)
return 1;
}
}
return 0;
}
if (TYPE_CODE (type) == TYPE_CODE_UNION)
{
for (i = 0; i < TYPE_NFIELDS (type); ++i)
{
fld_type = TYPE_FIELD_TYPE (type, 0);
if (!v850_use_struct_convention (0, fld_type))
return 0;
}
}
return 1;
}
struct reg_list
{
long mask;
int regno;
};
static void
handle_prepare (int insn, int insn2, CORE_ADDR * current_pc_ptr,
struct prologue_info *pi, struct pifsr **pifsr_ptr)
{
CORE_ADDR current_pc = *current_pc_ptr;
struct pifsr *pifsr = *pifsr_ptr;
long next = insn2 & 0xffff;
long list12 = ((insn & 1) << 16) + (next & 0xffe0);
long offset = (insn & 0x3e) << 1;
static struct reg_list reg_table[] =
{
{0x00800, 20},
{0x00400, 21},
{0x00200, 22},
{0x00100, 23},
{0x08000, 24},
{0x04000, 25},
{0x02000, 26},
{0x01000, 27},
{0x00080, 28},
{0x00040, 29},
{0x10000, 30},
{0x00020, 31},
{0, 0}
};
int i;
if ((next & 0x1f) == 0x0b)
current_pc += 2;
else if ((next & 0x1f) == 0x13)
current_pc += 2;
else if ((next & 0x1f) == 0x1b)
current_pc += 4;
for (i = 0; reg_table[i].mask != 0; i++)
if (list12 & reg_table[i].mask)
offset += v850_register_raw_size (reg_table[i].regno);
pi->frameoffset -= offset;
if (pifsr)
{
for (i = 0; reg_table[i].mask != 0; i++)
{
if (list12 & reg_table[i].mask)
{
int reg = reg_table[i].regno;
offset -= v850_register_raw_size (reg);
pifsr->reg = reg;
pifsr->offset = offset;
pifsr->cur_frameoffset = pi->frameoffset;
#ifdef DEBUG
printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset);
#endif
pifsr++;
}
}
}
#ifdef DEBUG
printf_filtered ("\tfound ctret after regsave func");
#endif
*current_pc_ptr = current_pc;
*pifsr_ptr = pifsr;
}
static void
handle_pushm (int insn, int insn2, struct prologue_info *pi,
struct pifsr **pifsr_ptr)
{
struct pifsr *pifsr = *pifsr_ptr;
long list12 = ((insn & 0x0f) << 16) + (insn2 & 0xfff0);
long offset = 0;
static struct reg_list pushml_reg_table[] =
{
{0x80000, E_PS_REGNUM},
{0x40000, 1},
{0x20000, 2},
{0x10000, 3},
{0x00800, 4},
{0x00400, 5},
{0x00200, 6},
{0x00100, 7},
{0x08000, 8},
{0x04000, 9},
{0x02000, 10},
{0x01000, 11},
{0x00080, 12},
{0x00040, 13},
{0x00020, 14},
{0x00010, 15},
{0, 0}
};
static struct reg_list pushmh_reg_table[] =
{
{0x80000, 16},
{0x40000, 17},
{0x20000, 18},
{0x10000, 19},
{0x00800, 20},
{0x00400, 21},
{0x00200, 22},
{0x00100, 23},
{0x08000, 24},
{0x04000, 25},
{0x02000, 26},
{0x01000, 27},
{0x00080, 28},
{0x00040, 29},
{0x00010, 30},
{0x00020, 31},
{0, 0}
};
struct reg_list *reg_table;
int i;
if ((insn2 & 7) == 1)
reg_table = pushml_reg_table;
else
reg_table = pushmh_reg_table;
for (i = 0; reg_table[i].mask != 0; i++)
if (list12 & reg_table[i].mask)
offset += v850_register_raw_size (reg_table[i].regno);
pi->frameoffset -= offset;
if (pifsr)
{
for (i = 0; reg_table[i].mask != 0; i++)
{
if (list12 & reg_table[i].mask)
{
int reg = reg_table[i].regno;
offset -= v850_register_raw_size (reg);
pifsr->reg = reg;
pifsr->offset = offset;
pifsr->cur_frameoffset = pi->frameoffset;
#ifdef DEBUG
printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset);
#endif
pifsr++;
}
}
}
#ifdef DEBUG
printf_filtered ("\tfound ctret after regsave func");
#endif
*pifsr_ptr = pifsr;
}
static CORE_ADDR
v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi)
{
CORE_ADDR func_addr, prologue_end, current_pc;
struct pifsr *pifsr, *pifsr_tmp;
int fp_used;
int ep_used;
int reg;
CORE_ADDR save_pc, save_end;
int regsave_func_p;
int r12_tmp;
if (find_pc_partial_function (pc, NULL, &func_addr, NULL))
{
struct symtab_and_line sal;
sal = find_pc_line (func_addr, 0);
if (func_addr == entry_point_address ())
pi->start_function = 1;
else
pi->start_function = 0;
#if 0
if (sal.line == 0)
prologue_end = pc;
else
prologue_end = sal.end;
#else
prologue_end = pc;
#endif
}
else
{
func_addr = pc - 100;
prologue_end = pc;
}
prologue_end = min (prologue_end, pc);
pi->frameoffset = 0;
pi->framereg = E_SP_REGNUM;
fp_used = 0;
ep_used = 0;
pifsr = pi->pifsrs;
regsave_func_p = 0;
save_pc = 0;
save_end = 0;
r12_tmp = 0;
#ifdef DEBUG
printf_filtered ("Current_pc = 0x%.8lx, prologue_end = 0x%.8lx\n",
(long) func_addr, (long) prologue_end);
#endif
for (current_pc = func_addr; current_pc < prologue_end;)
{
int insn;
int insn2 = -1;
#ifdef DEBUG
fprintf_filtered (gdb_stdlog, "0x%.8lx ", (long) current_pc);
gdb_print_insn (current_pc, gdb_stdlog);
#endif
insn = read_memory_unsigned_integer (current_pc, 2);
current_pc += 2;
if ((insn & 0x0780) >= 0x0600)
{
insn2 = read_memory_unsigned_integer (current_pc, 2);
current_pc += 2;
}
if ((insn & 0xffc0) == ((10 << 11) | 0x0780) && !regsave_func_p)
{
long low_disp = insn2 & ~(long) 1;
long disp = (((((insn & 0x3f) << 16) + low_disp)
& ~(long) 1) ^ 0x00200000) - 0x00200000;
save_pc = current_pc;
save_end = prologue_end;
regsave_func_p = 1;
current_pc += disp - 4;
prologue_end = (current_pc
+ (2 * 3)
+ 4
+ 2
+ (2 * 12)
+ 20);
#ifdef DEBUG
printf_filtered ("\tfound jarl <func>,r10, disp = %ld, low_disp = %ld, new pc = 0x%.8lx\n",
disp, low_disp, (long) current_pc + 2);
#endif
continue;
}
else if ((insn & 0xffc0) == 0x0200 && !regsave_func_p)
{
long ctbp = read_register (E_CTBP_REGNUM);
long adr = ctbp + ((insn & 0x3f) << 1);
save_pc = current_pc;
save_end = prologue_end;
regsave_func_p = 1;
current_pc = ctbp + (read_memory_unsigned_integer (adr, 2) & 0xffff);
prologue_end = (current_pc
+ (2 * 3)
+ 4
+ 20);
#ifdef DEBUG
printf_filtered ("\tfound callt, ctbp = 0x%.8lx, adr = %.8lx, new pc = 0x%.8lx\n",
ctbp, adr, (long) current_pc);
#endif
continue;
}
else if ((insn & 0xffc0) == 0x0780)
{
handle_prepare (insn, insn2, ¤t_pc, pi, &pifsr);
continue;
}
else if (insn == 0x07e0 && regsave_func_p && insn2 == 0x0144)
{
current_pc = save_pc;
prologue_end = save_end;
regsave_func_p = 0;
#ifdef DEBUG
printf_filtered ("\tfound ctret after regsave func");
#endif
continue;
}
else if ((insn & 0xfff0) == 0x07e0 && (insn2 & 5) == 1)
{
handle_pushm (insn, insn2, pi, &pifsr);
continue;
}
else if ((insn & 0xffe0) == 0x0060 && regsave_func_p)
{
current_pc = save_pc;
prologue_end = save_end;
regsave_func_p = 0;
#ifdef DEBUG
printf_filtered ("\tfound jmp after regsave func");
#endif
continue;
}
else if ((insn & 0x07c0) == 0x0780
|| (insn & 0xffe0) == 0x0060
|| (insn & 0x0780) == 0x0580)
{
#ifdef DEBUG
printf_filtered ("\n");
#endif
break;
}
else if ((insn & 0xffe0) == ((E_SP_REGNUM << 11) | 0x0240))
pi->frameoffset += ((insn & 0x1f) ^ 0x10) - 0x10;
else if (insn == ((E_SP_REGNUM << 11) | 0x0600 | E_SP_REGNUM))
pi->frameoffset += insn2;
else if (insn == ((E_FP_RAW_REGNUM << 11) | 0x0000 | E_SP_REGNUM))
{
fp_used = 1;
pi->framereg = E_FP_RAW_REGNUM;
}
else if (insn == ((E_R12_REGNUM << 11) | 0x0640 | E_R0_REGNUM))
r12_tmp = insn2 << 16;
else if (insn == ((E_R12_REGNUM << 11) | 0x0620 | E_R12_REGNUM))
r12_tmp += insn2;
else if (insn == ((E_SP_REGNUM << 11) | 0x01c0 | E_R12_REGNUM) && r12_tmp)
pi->frameoffset = r12_tmp;
else if (insn == ((E_EP_REGNUM << 11) | 0x0000 | E_SP_REGNUM))
ep_used = 1;
else if (insn == ((E_EP_REGNUM << 11) | 0x0000 | E_R1_REGNUM))
ep_used = 0;
else if (((insn & 0x07ff) == (0x0760 | E_SP_REGNUM)
|| (fp_used
&& (insn & 0x07ff) == (0x0760 | E_FP_RAW_REGNUM)))
&& pifsr
&& (((reg = (insn >> 11) & 0x1f) >= E_SAVE1_START_REGNUM && reg <= E_SAVE1_END_REGNUM)
|| (reg >= E_SAVE2_START_REGNUM && reg <= E_SAVE2_END_REGNUM)
|| (reg >= E_SAVE3_START_REGNUM && reg <= E_SAVE3_END_REGNUM)))
{
pifsr->reg = reg;
pifsr->offset = insn2 & ~1;
pifsr->cur_frameoffset = pi->frameoffset;
#ifdef DEBUG
printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset);
#endif
pifsr++;
}
else if (ep_used
&& ((insn & 0x0781) == 0x0501)
&& pifsr
&& (((reg = (insn >> 11) & 0x1f) >= E_SAVE1_START_REGNUM && reg <= E_SAVE1_END_REGNUM)
|| (reg >= E_SAVE2_START_REGNUM && reg <= E_SAVE2_END_REGNUM)
|| (reg >= E_SAVE3_START_REGNUM && reg <= E_SAVE3_END_REGNUM)))
{
pifsr->reg = reg;
pifsr->offset = (insn & 0x007e) << 1;
pifsr->cur_frameoffset = pi->frameoffset;
#ifdef DEBUG
printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset);
#endif
pifsr++;
}
#ifdef DEBUG
printf_filtered ("\n");
#endif
}
if (pifsr)
pifsr->framereg = 0;
for (pifsr_tmp = pi->pifsrs; pifsr_tmp && pifsr_tmp != pifsr; pifsr_tmp++)
{
pifsr_tmp->offset -= pi->frameoffset - pifsr_tmp->cur_frameoffset;
pifsr_tmp->framereg = pi->framereg;
#ifdef DEBUG
printf_filtered ("Saved register r%d, offset = %d, framereg = r%d\n",
pifsr_tmp->reg, pifsr_tmp->offset, pifsr_tmp->framereg);
#endif
}
#ifdef DEBUG
printf_filtered ("Framereg = r%d, frameoffset = %d\n", pi->framereg, pi->frameoffset);
#endif
return current_pc;
}
static CORE_ADDR
v850_find_callers_reg (struct frame_info *fi, int regnum)
{
for (; fi; fi = get_next_frame (fi))
if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
get_frame_base (fi)))
return deprecated_read_register_dummy (get_frame_pc (fi),
get_frame_base (fi), regnum);
else if (deprecated_get_frame_saved_regs (fi)[regnum] != 0)
return read_memory_unsigned_integer (deprecated_get_frame_saved_regs (fi)[regnum],
v850_register_raw_size (regnum));
return read_register (regnum);
}
static CORE_ADDR
v850_frame_chain (struct frame_info *fi)
{
struct prologue_info pi;
CORE_ADDR callers_pc, fp;
callers_pc = DEPRECATED_FRAME_SAVED_PC (fi);
fp = v850_find_callers_reg (fi, E_FP_RAW_REGNUM);
if (DEPRECATED_PC_IN_CALL_DUMMY (callers_pc, fp, fp))
return fp;
pi.pifsrs = NULL;
v850_scan_prologue (callers_pc, &pi);
if (pi.start_function)
return 0;
if (pi.framereg == E_FP_RAW_REGNUM)
return v850_find_callers_reg (fi, pi.framereg);
return get_frame_base (fi) - pi.frameoffset;
}
static CORE_ADDR
v850_skip_prologue (CORE_ADDR pc)
{
CORE_ADDR func_addr, func_end;
if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
{
struct symtab_and_line sal;
sal = find_pc_line (func_addr, 0);
if (sal.line != 0 && sal.end < func_end)
return sal.end;
else
return pc;
}
return pc;
}
static void
v850_pop_frame (void)
{
struct frame_info *frame = get_current_frame ();
int regnum;
if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
get_frame_base (frame),
get_frame_base (frame)))
generic_pop_dummy_frame ();
else
{
write_register (E_PC_REGNUM, DEPRECATED_FRAME_SAVED_PC (frame));
for (regnum = 0; regnum < E_NUM_REGS; regnum++)
if (deprecated_get_frame_saved_regs (frame)[regnum] != 0)
write_register (regnum,
read_memory_unsigned_integer (deprecated_get_frame_saved_regs (frame)[regnum],
v850_register_raw_size (regnum)));
write_register (E_SP_REGNUM, get_frame_base (frame));
}
flush_cached_frames ();
}
static CORE_ADDR
v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
int struct_return, CORE_ADDR struct_addr)
{
int argreg;
int argnum;
int len = 0;
int stack_offset;
sp &= ~3;
stack_offset = 16;
for (argnum = 0; argnum < nargs; argnum++)
len += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3);
sp -= len + stack_offset;
argreg = E_ARG0_REGNUM;
if (struct_return)
argreg++;
for (argnum = 0; argnum < nargs; argnum++)
{
int len;
char *val;
char valbuf[v850_register_raw_size (E_ARG0_REGNUM)];
if (!v850_type_is_scalar (VALUE_TYPE (*args))
&& TYPE_LENGTH (VALUE_TYPE (*args)) > E_MAX_RETTYPE_SIZE_IN_REGS)
{
store_unsigned_integer (valbuf, 4, VALUE_ADDRESS (*args));
len = 4;
val = valbuf;
}
else
{
len = TYPE_LENGTH (VALUE_TYPE (*args));
val = (char *) VALUE_CONTENTS (*args);
}
while (len > 0)
if (argreg <= E_ARGLAST_REGNUM)
{
CORE_ADDR regval;
regval = extract_unsigned_integer (val, v850_register_raw_size (argreg));
write_register (argreg, regval);
len -= v850_register_raw_size (argreg);
val += v850_register_raw_size (argreg);
argreg++;
}
else
{
write_memory (sp + stack_offset, val, 4);
len -= 4;
val += 4;
stack_offset += 4;
}
args++;
}
return sp;
}
static CORE_ADDR
v850_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
{
write_register (E_RP_REGNUM, entry_point_address ());
return sp;
}
static CORE_ADDR
v850_frame_saved_pc (struct frame_info *fi)
{
if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
get_frame_base (fi)))
return deprecated_read_register_dummy (get_frame_pc (fi),
get_frame_base (fi), E_PC_REGNUM);
else
return v850_find_callers_reg (fi, E_RP_REGNUM);
}
static void
v850_fix_call_dummy (char *dummy, CORE_ADDR sp, CORE_ADDR fun, int nargs,
struct value **args, struct type *type, int gcc_p)
{
long offset24;
offset24 = (long) fun - (long) entry_point_address ();
offset24 &= 0x3fffff;
offset24 |= 0xff800000;
store_unsigned_integer ((unsigned int *) &dummy[2], 2, offset24 & 0xffff);
store_unsigned_integer ((unsigned int *) &dummy[0], 2, offset24 >> 16);
}
static CORE_ADDR
v850_saved_pc_after_call (struct frame_info *ignore)
{
return read_register (E_RP_REGNUM);
}
static void
v850_extract_return_value (struct type *type, char *regbuf, char *valbuf)
{
CORE_ADDR return_buffer;
if (!v850_use_struct_convention (0, type))
{
memcpy (valbuf,
®buf[DEPRECATED_REGISTER_BYTE (E_V0_REGNUM)],
TYPE_LENGTH (type));
}
else
{
return_buffer =
extract_unsigned_integer (regbuf + DEPRECATED_REGISTER_BYTE (E_V0_REGNUM),
DEPRECATED_REGISTER_RAW_SIZE (E_V0_REGNUM));
read_memory (return_buffer, valbuf, TYPE_LENGTH (type));
}
}
const static unsigned char *
v850_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
{
static unsigned char breakpoint[] = { 0x85, 0x05 };
*lenptr = sizeof (breakpoint);
return breakpoint;
}
static void
v850_store_return_value (struct type *type, char *valbuf)
{
CORE_ADDR return_buffer;
if (!v850_use_struct_convention (0, type))
deprecated_write_register_bytes (DEPRECATED_REGISTER_BYTE (E_V0_REGNUM), valbuf,
TYPE_LENGTH (type));
else
{
return_buffer = read_register (E_V0_REGNUM);
write_memory (return_buffer, valbuf, TYPE_LENGTH (type));
}
}
static void
v850_frame_init_saved_regs (struct frame_info *fi)
{
struct prologue_info pi;
struct pifsr pifsrs[E_NUM_REGS + 1], *pifsr;
CORE_ADDR func_addr, func_end;
if (!deprecated_get_frame_saved_regs (fi))
{
frame_saved_regs_zalloc (fi);
if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
get_frame_base (fi)))
return;
if (find_pc_partial_function (get_frame_pc (fi), NULL, &func_addr, &func_end))
{
pi.pifsrs = pifsrs;
v850_scan_prologue (get_frame_pc (fi), &pi);
if (!get_next_frame (fi) && pi.framereg == E_SP_REGNUM)
deprecated_update_frame_base_hack (fi, read_register (pi.framereg) - pi.frameoffset);
for (pifsr = pifsrs; pifsr->framereg; pifsr++)
{
deprecated_get_frame_saved_regs (fi)[pifsr->reg] = pifsr->offset + get_frame_base (fi);
if (pifsr->framereg == E_SP_REGNUM)
deprecated_get_frame_saved_regs (fi)[pifsr->reg] += pi.frameoffset;
}
}
}
}
static void
v850_init_extra_frame_info (int fromleaf, struct frame_info *fi)
{
struct prologue_info pi;
if (get_next_frame (fi))
deprecated_update_frame_pc_hack (fi, DEPRECATED_FRAME_SAVED_PC (get_next_frame (fi)));
v850_frame_init_saved_regs (fi);
}
static void
v850_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
{
write_register (E_ARG0_REGNUM, addr);
}
static CORE_ADDR
v850_target_read_fp (void)
{
return read_register (E_FP_RAW_REGNUM);
}
static struct gdbarch *
v850_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
static LONGEST call_dummy_words[1] = { 0 };
struct gdbarch_tdep *tdep = NULL;
struct gdbarch *gdbarch;
int i;
arches = gdbarch_list_lookup_by_info (arches, &info);
if (arches != NULL)
return (arches->gdbarch);
#if 0
tdep = (struct gdbarch_tdep *) xmalloc (sizeof (struct gdbarch_tdep));
#endif
if (info.bfd_arch_info->arch != bfd_arch_v850)
return 0;
gdbarch = gdbarch_alloc (&info, 0);
set_gdbarch_deprecated_init_frame_pc (gdbarch, deprecated_init_frame_pc_default);
for (i = 0; v850_processor_type_table[i].regnames != NULL; i++)
{
if (v850_processor_type_table[i].mach == info.bfd_arch_info->mach)
{
v850_register_names = v850_processor_type_table[i].regnames;
break;
}
}
set_gdbarch_num_regs (gdbarch, E_NUM_REGS);
set_gdbarch_num_pseudo_regs (gdbarch, 0);
set_gdbarch_sp_regnum (gdbarch, E_SP_REGNUM);
set_gdbarch_deprecated_fp_regnum (gdbarch, E_FP_REGNUM);
set_gdbarch_pc_regnum (gdbarch, E_PC_REGNUM);
set_gdbarch_register_name (gdbarch, v850_register_name);
set_gdbarch_deprecated_register_size (gdbarch, v850_reg_size);
set_gdbarch_deprecated_register_bytes (gdbarch, E_ALL_REGS_SIZE);
set_gdbarch_deprecated_register_byte (gdbarch, v850_register_byte);
set_gdbarch_deprecated_register_raw_size (gdbarch, v850_register_raw_size);
set_gdbarch_deprecated_max_register_raw_size (gdbarch, v850_reg_size);
set_gdbarch_deprecated_register_virtual_size (gdbarch, v850_register_raw_size);
set_gdbarch_deprecated_max_register_virtual_size (gdbarch, v850_reg_size);
set_gdbarch_deprecated_register_virtual_type (gdbarch, v850_reg_virtual_type);
set_gdbarch_deprecated_target_read_fp (gdbarch, v850_target_read_fp);
set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, v850_frame_init_saved_regs);
set_gdbarch_deprecated_init_extra_frame_info (gdbarch, v850_init_extra_frame_info);
set_gdbarch_deprecated_frame_chain (gdbarch, v850_frame_chain);
set_gdbarch_deprecated_saved_pc_after_call (gdbarch, v850_saved_pc_after_call);
set_gdbarch_deprecated_frame_saved_pc (gdbarch, v850_frame_saved_pc);
set_gdbarch_skip_prologue (gdbarch, v850_skip_prologue);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
set_gdbarch_deprecated_push_return_address (gdbarch, v850_push_return_address);
set_gdbarch_deprecated_extract_return_value (gdbarch, v850_extract_return_value);
set_gdbarch_deprecated_push_arguments (gdbarch, v850_push_arguments);
set_gdbarch_deprecated_pop_frame (gdbarch, v850_pop_frame);
set_gdbarch_deprecated_store_struct_return (gdbarch, v850_store_struct_return);
set_gdbarch_deprecated_store_return_value (gdbarch, v850_store_return_value);
set_gdbarch_use_struct_convention (gdbarch, v850_use_struct_convention);
set_gdbarch_deprecated_call_dummy_words (gdbarch, call_dummy_nil);
set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, 0);
set_gdbarch_deprecated_fix_call_dummy (gdbarch, v850_fix_call_dummy);
set_gdbarch_breakpoint_from_pc (gdbarch, v850_breakpoint_from_pc);
set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
set_gdbarch_deprecated_dummy_write_sp (gdbarch, deprecated_write_sp);
set_gdbarch_print_insn (gdbarch, print_insn_v850);
return gdbarch;
}
extern initialize_file_ftype _initialize_v850_tdep;
void
_initialize_v850_tdep (void)
{
register_gdbarch_init (bfd_arch_v850, v850_gdbarch_init);
}