/* Target-dependent code for the S+core architecture, for GDB,
the GNU Debugger.
- Copyright (C) 2006
- Free Software Foundation, Inc.
+ Copyright (C) 2006-2020 Free Software Foundation, Inc.
Contributed by Qinwei (qinwei@sunnorth.com.cn)
Contributed by Ching-Peng Lin (cplin@sunplus.com)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "gdb_assert.h"
#include "inferior.h"
#include "symtab.h"
#include "objfiles.h"
#include "target.h"
#include "arch-utils.h"
#include "regcache.h"
+#include "regset.h"
#include "dis-asm.h"
#include "frame-unwind.h"
#include "frame-base.h"
#include "trad-frame.h"
-#include "dwarf2-frame.h"
+#include "dwarf2/frame.h"
#include "score-tdep.h"
-#define G_FLD(_i,_ms,_ls) (((_i) << (31 - (_ms))) >> (31 - (_ms) + (_ls)))
-#define RM_PBITS(_raw) ((G_FLD(_raw, 31, 16) << 15) | G_FLD(_raw, 14, 0))
+#define G_FLD(_i,_ms,_ls) \
+ ((unsigned)((_i) << (31 - (_ms))) >> (31 - (_ms) + (_ls)))
typedef struct{
- unsigned int v;
- unsigned int raw;
- char is15;
+ unsigned long long v;
+ unsigned long long raw;
+ unsigned int len;
}inst_t;
struct score_frame_cache
{
CORE_ADDR base;
+ CORE_ADDR fp;
struct trad_frame_saved_reg *saved_regs;
};
-#if 0
-/* If S+core GCC will generate these instructions in the prologue:
-
- lw rx, imm1
- addi rx, -imm2
- mv! r2, rx
-
- then .pdr section is used. */
-
-#define P_SIZE 8
-#define PI_SYM 0
-#define PI_R_MSK 1
-#define PI_R_OFF 2
-#define PI_R_LEF 4
-#define PI_F_OFF 5
-#define PI_F_REG 6
-#define PI_RAREG 7
-
-typedef struct frame_extra_info
-{
- CORE_ADDR p_frame;
- unsigned int pdr[P_SIZE];
-} extra_info_t;
-
-struct obj_priv
-{
- bfd_size_type size;
- char *contents;
-};
-
-static bfd *the_bfd;
-
-static int
-score_compare_pdr_entries (const void *a, const void *b)
-{
- CORE_ADDR lhs = bfd_get_32 (the_bfd, (bfd_byte *) a);
- CORE_ADDR rhs = bfd_get_32 (the_bfd, (bfd_byte *) b);
- if (lhs < rhs)
- return -1;
- else if (lhs == rhs)
- return 0;
- else
- return 1;
-}
-
-static void
-score_analyze_pdr_section (CORE_ADDR startaddr, CORE_ADDR pc,
- struct frame_info *next_frame,
- struct score_frame_cache *this_cache)
-{
- struct symbol *sym;
- struct obj_section *sec;
- extra_info_t *fci_ext;
- CORE_ADDR leaf_ra_stack_addr = -1;
-
- gdb_assert (startaddr <= pc);
- gdb_assert (this_cache != NULL);
-
- fci_ext = frame_obstack_zalloc (sizeof (extra_info_t));
- if ((sec = find_pc_section (pc)) == NULL)
- {
- error ("Can't find section in file:%s, line:%d!", __FILE__, __LINE__);
- return;
- }
-
- /* Anylyze .pdr section and get coresponding fields. */
- {
- static struct obj_priv *priv = NULL;
-
- if (priv == NULL)
- {
- asection *bfdsec;
- priv = obstack_alloc (&sec->objfile->objfile_obstack,
- sizeof (struct obj_priv));
- if ((bfdsec = bfd_get_section_by_name (sec->objfile->obfd, ".pdr")))
- {
- priv->size = bfd_section_size (sec->objfile->obfd, bfdsec);
- priv->contents = obstack_alloc (&sec->objfile->objfile_obstack,
- priv->size);
- bfd_get_section_contents (sec->objfile->obfd, bfdsec,
- priv->contents, 0, priv->size);
- the_bfd = sec->objfile->obfd;
- qsort (priv->contents, priv->size / 32, 32,
- score_compare_pdr_entries);
- the_bfd = NULL;
- }
- else
- priv->size = 0;
- }
- if (priv->size != 0)
- {
- int low = 0, mid, high = priv->size / 32;
- char *ptr;
- do
-
- {
- CORE_ADDR pdr_pc;
- mid = (low + high) / 2;
- ptr = priv->contents + mid * 32;
- pdr_pc = bfd_get_signed_32 (sec->objfile->obfd, ptr);
- pdr_pc += ANOFFSET (sec->objfile->section_offsets,
- SECT_OFF_TEXT (sec->objfile));
- if (pdr_pc == startaddr)
- break;
- if (pdr_pc > startaddr)
- high = mid;
- else
- low = mid + 1;
- }
- while (low != high);
-
- if (low != high)
- {
- gdb_assert (bfd_get_32 (sec->objfile->obfd, ptr) == startaddr);
-#define EXT_PDR(_pi) bfd_get_32(sec->objfile->obfd, ptr+((_pi)<<2))
- fci_ext->pdr[PI_SYM] = EXT_PDR (PI_SYM);
- fci_ext->pdr[PI_R_MSK] = EXT_PDR (PI_R_MSK);
- fci_ext->pdr[PI_R_OFF] = EXT_PDR (PI_R_OFF);
- fci_ext->pdr[PI_R_LEF] = EXT_PDR (PI_R_LEF);
- fci_ext->pdr[PI_F_OFF] = EXT_PDR (PI_F_OFF);
- fci_ext->pdr[PI_F_REG] = EXT_PDR (PI_F_REG);
- fci_ext->pdr[PI_RAREG] = EXT_PDR (PI_RAREG);
-#undef EXT_PDR
- }
- }
- }
-}
-#endif
+static int target_mach = bfd_mach_score7;
static struct type *
score_register_type (struct gdbarch *gdbarch, int regnum)
{
- gdb_assert (regnum >= 0 && regnum < SCORE_NUM_REGS);
- return builtin_type_uint32;
+ gdb_assert (regnum >= 0
+ && regnum < ((target_mach == bfd_mach_score7)
+ ? SCORE7_NUM_REGS : SCORE3_NUM_REGS));
+ return builtin_type (gdbarch)->builtin_uint32;
}
-static LONGEST
-score_read_unsigned_register (int regnum)
+static const char *
+score7_register_name (struct gdbarch *gdbarch, int regnum)
{
- LONGEST val;
- regcache_cooked_read_unsigned (current_regcache, regnum, &val);
- return val;
-}
+ const char *score_register_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",
-static CORE_ADDR
-score_read_sp (void)
-{
- return score_read_unsigned_register (SCORE_SP_REGNUM);
-}
+ "PSR", "COND", "ECR", "EXCPVEC", "CCR",
+ "EPC", "EMA", "TLBLOCK", "TLBPT", "PEADDR",
+ "TLBRPT", "PEVN", "PECTX", "LIMPFN", "LDMPFN",
+ "PREV", "DREG", "PC", "DSAVE", "COUNTER",
+ "LDCR", "STCR", "CEH", "CEL",
+ };
-static CORE_ADDR
-score_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
-{
- return frame_unwind_register_unsigned (next_frame, SCORE_PC_REGNUM);
+ gdb_assert (regnum >= 0 && regnum < SCORE7_NUM_REGS);
+ return score_register_names[regnum];
}
static const char *
-score_register_name (int regnum)
+score3_register_name (struct gdbarch *gdbarch, int regnum)
{
const char *score_register_names[] = {
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
- "PSR", "COND", "ECR", "EXCPVEC",
- "CCR", "EPC", "EMA", "TLBLOCK",
- "TLBPT", "PEADDR", "TLBRPT", "PEVN",
- "PECTX", "LIMPFN", "LDMPFN", "PREV",
- "DREG", "PC", "DSAVE", "COUNTER",
- "LDCR", "STCR", "CEH", "CEL",
+ "PSR", "COND", "ECR", "EXCPVEC", "CCR",
+ "EPC", "EMA", "PREV", "DREG", "DSAVE",
+ "COUNTER", "LDCR", "STCR", "CEH", "CEL",
+ "", "", "PC",
};
- gdb_assert (regnum >= 0 && regnum < SCORE_NUM_REGS);
+ gdb_assert (regnum >= 0 && regnum < SCORE3_NUM_REGS);
return score_register_names[regnum];
}
+#if WITH_SIM
static int
-score_register_sim_regno (int regnum)
+score_register_sim_regno (struct gdbarch *gdbarch, int regnum)
{
- gdb_assert (regnum >= 0 && regnum < SCORE_NUM_REGS);
+ gdb_assert (regnum >= 0
+ && regnum < ((target_mach == bfd_mach_score7)
+ ? SCORE7_NUM_REGS : SCORE3_NUM_REGS));
return regnum;
}
+#endif
-static int
-score_print_insn (bfd_vma memaddr, struct disassemble_info *info)
+static inst_t *
+score7_fetch_inst (struct gdbarch *gdbarch, CORE_ADDR addr, gdb_byte *memblock)
{
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- return print_insn_big_score (memaddr, info);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ static inst_t inst = { 0, 0, 0 };
+ gdb_byte buf[SCORE_INSTLEN] = { 0 };
+ int big;
+ int ret;
+
+ if (target_has_execution && memblock != NULL)
+ {
+ /* Fetch instruction from local MEMBLOCK. */
+ memcpy (buf, memblock, SCORE_INSTLEN);
+ }
else
- return print_insn_little_score (memaddr, info);
+ {
+ /* Fetch instruction from target. */
+ ret = target_read_memory (addr & ~0x3, buf, SCORE_INSTLEN);
+ if (ret)
+ {
+ error (_("Error: target_read_memory in file:%s, line:%d!"),
+ __FILE__, __LINE__);
+ return 0;
+ }
+ }
+
+ inst.raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order);
+ inst.len = (inst.raw & 0x80008000) ? 4 : 2;
+ inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF);
+ big = (byte_order == BFD_ENDIAN_BIG);
+ if (inst.len == 2)
+ {
+ if (big ^ ((addr & 0x2) == 2))
+ inst.v = G_FLD (inst.v, 29, 15);
+ else
+ inst.v = G_FLD (inst.v, 14, 0);
+ }
+ return &inst;
}
-static const gdb_byte *
-score_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
+static inst_t *
+score3_adjust_pc_and_fetch_inst (CORE_ADDR *pcptr, int *lenptr,
+ enum bfd_endian byte_order)
{
- gdb_byte buf[SCORE_INSTLEN] = { 0 };
+ static inst_t inst = { 0, 0, 0 };
+
+ struct breakplace
+ {
+ int break_offset;
+ int inst_len;
+ };
+ /* raw table 1 (column 2, 3, 4)
+ * 0 1 0 * # 2
+ * 0 1 1 0 # 3
+ 0 1 1 0 * # 6
+ table 2 (column 1, 2, 3)
+ * 0 0 * * # 0, 4
+ 0 1 0 * * # 2
+ 1 1 0 * * # 6
+ */
+
+ static const struct breakplace bk_table[16] =
+ {
+ /* table 1 */
+ {0, 0},
+ {0, 0},
+ {0, 4},
+ {0, 6},
+ {0, 0},
+ {0, 0},
+ {-2, 6},
+ {0, 0},
+ /* table 2 */
+ {0, 2},
+ {0, 0},
+ {-2, 4},
+ {0, 0},
+ {0, 2},
+ {0, 0},
+ {-4, 6},
+ {0, 0}
+ };
+
+#define EXTRACT_LEN 2
+ CORE_ADDR adjust_pc = *pcptr & ~0x1;
+ gdb_byte buf[5][EXTRACT_LEN] =
+ {
+ {'\0', '\0'},
+ {'\0', '\0'},
+ {'\0', '\0'},
+ {'\0', '\0'},
+ {'\0', '\0'}
+ };
int ret;
unsigned int raw;
+ unsigned int cbits = 0;
+ int bk_index;
+ int i, count;
+
+ inst.v = 0;
+ inst.raw = 0;
+ inst.len = 0;
+
+ adjust_pc -= 4;
+ for (i = 0; i < 5; i++)
+ {
+ ret = target_read_memory (adjust_pc + 2 * i, buf[i], EXTRACT_LEN);
+ if (ret != 0)
+ {
+ buf[i][0] = '\0';
+ buf[i][1] = '\0';
+ if (i == 2)
+ error (_("Error: target_read_memory in file:%s, line:%d!"),
+ __FILE__, __LINE__);
+ }
+
+ raw = extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order);
+ cbits = (cbits << 1) | (raw >> 15);
+ }
+ adjust_pc += 4;
+
+ if (cbits & 0x4)
+ {
+ /* table 1 */
+ cbits = (cbits >> 1) & 0x7;
+ bk_index = cbits;
+ }
+ else
+ {
+ /* table 2 */
+ cbits = (cbits >> 2) & 0x7;
+ bk_index = cbits + 8;
+ }
+
+ gdb_assert (!((bk_table[bk_index].break_offset == 0)
+ && (bk_table[bk_index].inst_len == 0)));
+
+ inst.len = bk_table[bk_index].inst_len;
+
+ i = (bk_table[bk_index].break_offset + 4) / 2;
+ count = inst.len / 2;
+ for (; count > 0; i++, count--)
+ {
+ inst.raw = (inst.raw << 16)
+ | extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order);
+ }
+
+ switch (inst.len)
+ {
+ case 2:
+ inst.v = inst.raw & 0x7FFF;
+ break;
+ case 4:
+ inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF);
+ break;
+ case 6:
+ inst.v = ((inst.raw >> 32 & 0x7FFF) << 30)
+ | ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF);
+ break;
+ }
+
+ if (pcptr)
+ *pcptr = adjust_pc + bk_table[bk_index].break_offset;
+ if (lenptr)
+ *lenptr = bk_table[bk_index].inst_len;
+
+#undef EXTRACT_LEN
+
+ return &inst;
+}
+
+/* Implement the breakpoint_kind_from_pc gdbarch method. */
+
+static int
+score7_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr)
+{
+ int ret;
+ unsigned int raw;
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ gdb_byte buf[SCORE_INSTLEN] = { 0 };
if ((ret = target_read_memory (*pcptr & ~0x3, buf, SCORE_INSTLEN)) != 0)
{
- memory_error (ret, *pcptr);
+ error (_("Error: target_read_memory in file:%s, line:%d!"),
+ __FILE__, __LINE__);
}
- raw = extract_unsigned_integer (buf, SCORE_INSTLEN);
+ raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order);
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
+ if (!(raw & 0x80008000))
{
- if (!(raw & 0x80008000))
- {
- /* 16bits instruction. */
- static gdb_byte big_breakpoint16[] = { 0x60, 0x02 };
- *pcptr &= ~0x1;
- *lenptr = sizeof (big_breakpoint16);
- return big_breakpoint16;
- }
+ /* 16bits instruction. */
+ *pcptr &= ~0x1;
+ return 2;
+ }
+ else
+ {
+ /* 32bits instruction. */
+ *pcptr &= ~0x3;
+ return 4;
+ }
+}
+
+/* Implement the sw_breakpoint_from_kind gdbarch method. */
+
+static const gdb_byte *
+score7_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size)
+{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+
+ *size = kind;
+
+ if (kind == 4)
+ {
+ static gdb_byte big_breakpoint32[] = { 0x80, 0x00, 0x80, 0x06 };
+ static gdb_byte little_breakpoint32[] = { 0x06, 0x80, 0x00, 0x80 };
+
+ if (byte_order == BFD_ENDIAN_BIG)
+ return big_breakpoint32;
else
- {
- /* 32bits instruction. */
- static gdb_byte big_breakpoint32[] = { 0x80, 0x00, 0x80, 0x06 };
- *pcptr &= ~0x3;
- *lenptr = sizeof (big_breakpoint32);
- return big_breakpoint32;
- }
+ return little_breakpoint32;
}
else
{
- if (!(raw & 0x80008000))
- {
- /* 16bits instruction. */
- static gdb_byte little_breakpoint16[] = { 0x02, 0x60 };
- *pcptr &= ~0x1;
- *lenptr = sizeof (little_breakpoint16);
- return little_breakpoint16;
- }
+ static gdb_byte big_breakpoint16[] = { 0x60, 0x02 };
+ static gdb_byte little_breakpoint16[] = { 0x02, 0x60 };
+
+ if (byte_order == BFD_ENDIAN_BIG)
+ return big_breakpoint16;
else
- {
- /* 32bits instruction. */
- static gdb_byte little_breakpoint32[] = { 0x06, 0x80, 0x00, 0x80 };
- *pcptr &= ~0x3;
- *lenptr = sizeof (little_breakpoint32);
- return little_breakpoint32;
- }
+ return little_breakpoint16;
}
}
+/* Implement the breakpoint_kind_from_pc gdbarch method. */
+
+static int
+score3_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr)
+{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int len;
+
+ score3_adjust_pc_and_fetch_inst (pcptr, &len, byte_order);
+
+ return len;
+}
+
+/* Implement the sw_breakpoint_from_kind gdbarch method. */
+
+static const gdb_byte *
+score3_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size)
+{
+ int index = 0;
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ static gdb_byte score_break_insns[6][6] = {
+ /* The following three instructions are big endian. */
+ { 0x00, 0x20 },
+ { 0x80, 0x00, 0x00, 0x06 },
+ { 0x80, 0x00, 0x80, 0x00, 0x00, 0x00 },
+ /* The following three instructions are little endian. */
+ { 0x20, 0x00 },
+ { 0x00, 0x80, 0x06, 0x00 },
+ { 0x00, 0x80, 0x00, 0x80, 0x00, 0x00 }};
+
+ *size = kind;
+
+ index = ((byte_order == BFD_ENDIAN_BIG) ? 0 : 3) + (kind / 2 - 1);
+ return score_break_insns[index];
+}
+
+static CORE_ADDR
+score_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr)
+{
+ CORE_ADDR adjust_pc = bpaddr;
+
+ if (target_mach == bfd_mach_score3)
+ score3_adjust_pc_and_fetch_inst (&adjust_pc, NULL,
+ gdbarch_byte_order (gdbarch));
+ else
+ adjust_pc = align_down (adjust_pc, 2);
+
+ return adjust_pc;
+}
+
static CORE_ADDR
score_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr)
{
const gdb_byte *writebuf, int buf_offset)
{
int reg_offset = 0;
- gdb_assert (regnum >= 0 && regnum < SCORE_NUM_REGS);
+ gdb_assert (regnum >= 0
+ && regnum < ((target_mach == bfd_mach_score7)
+ ? SCORE7_NUM_REGS : SCORE3_NUM_REGS));
switch (endian)
{
reg_offset = 0;
break;
default:
- internal_error (__FILE__, __LINE__, _("score_xfer_register error!"));
+ error (_("Error: score_xfer_register in file:%s, line:%d!"),
+ __FILE__, __LINE__);
}
if (readbuf != NULL)
- regcache_cooked_read_part (regcache, regnum, reg_offset, length,
- readbuf + buf_offset);
+ regcache->cooked_read_part (regnum, reg_offset, length,
+ readbuf + buf_offset);
if (writebuf != NULL)
- regcache_cooked_write_part (regcache, regnum, reg_offset, length,
- writebuf + buf_offset);
+ regcache->cooked_write_part (regnum, reg_offset, length,
+ writebuf + buf_offset);
}
static enum return_value_convention
-score_return_value (struct gdbarch *gdbarch, struct type *type,
- struct regcache *regcache,
+score_return_value (struct gdbarch *gdbarch, struct value *function,
+ struct type *type, struct regcache *regcache,
gdb_byte * readbuf, const gdb_byte * writebuf)
{
- if (TYPE_CODE (type) == TYPE_CODE_STRUCT
- || TYPE_CODE (type) == TYPE_CODE_UNION
- || TYPE_CODE (type) == TYPE_CODE_ARRAY)
+ if (type->code () == TYPE_CODE_STRUCT
+ || type->code () == TYPE_CODE_UNION
+ || type->code () == TYPE_CODE_ARRAY)
return RETURN_VALUE_STRUCT_CONVENTION;
else
{
offset += SCORE_REGSIZE, regnum++)
{
int xfer = SCORE_REGSIZE;
+
if (offset + xfer > TYPE_LENGTH (type))
xfer = TYPE_LENGTH (type) - offset;
- score_xfer_register (regcache, regnum, xfer, TARGET_BYTE_ORDER,
+ score_xfer_register (regcache, regnum, xfer,
+ gdbarch_byte_order(gdbarch),
readbuf, writebuf, offset);
}
return RETURN_VALUE_REGISTER_CONVENTION;
}
}
-static struct frame_id
-score_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
-{
- return frame_id_build (
- frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM),
- frame_pc_unwind (next_frame));
-}
-
static int
score_type_needs_double_align (struct type *type)
{
- enum type_code typecode = TYPE_CODE (type);
+ enum type_code typecode = type->code ();
- if (typecode == TYPE_CODE_INT && TYPE_LENGTH (type) == 8)
- return 1;
- if (typecode == TYPE_CODE_FLT && TYPE_LENGTH (type) == 8)
+ if ((typecode == TYPE_CODE_INT && TYPE_LENGTH (type) == 8)
+ || (typecode == TYPE_CODE_FLT && TYPE_LENGTH (type) == 8))
return 1;
else if (typecode == TYPE_CODE_STRUCT || typecode == TYPE_CODE_UNION)
{
int i, n;
- n = TYPE_NFIELDS (type);
+ n = type->num_fields ();
for (i = 0; i < n; i++)
if (score_type_needs_double_align (TYPE_FIELD_TYPE (type, i)))
return 1;
score_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)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int argnum;
int argreg;
int arglen = 0;
argreg = SCORE_BEGIN_ARG_REGNUM;
- /* Step 3, Check if struct return then save the struct address to r4 and
- increase the stack_offset by 4. */
- if (struct_return)
+ /* Step 3, Check if struct return then save the struct address to
+ r4 and increase the stack_offset by 4. */
+ if (return_method == return_method_struct)
{
regcache_cooked_write_unsigned (regcache, argreg++, struct_addr);
stack_offset += SCORE_REGSIZE;
}
/* Step 4, Load arguments:
- If arg length is too long (> 4 bytes),
- then split the arg and save every parts. */
+ If arg length is too long (> 4 bytes), then split the arg and
+ save every parts. */
for (argnum = 0; argnum < nargs; argnum++)
{
struct value *arg = args[argnum];
struct type *arg_type = check_typedef (value_type (arg));
- arglen = TYPE_LENGTH (arg_type);
- enum type_code typecode = TYPE_CODE (arg_type);
+ enum type_code typecode = arg_type->code ();
const gdb_byte *val = value_contents (arg);
int downward_offset = 0;
-
- int odd_sized_struct_p = (arglen > SCORE_REGSIZE
- && arglen % SCORE_REGSIZE != 0);
int arg_last_part_p = 0;
+ arglen = TYPE_LENGTH (arg_type);
+
/* If a arg should be aligned to 8 bytes (long long or double),
the value should be put to even register numbers. */
if (score_type_needs_double_align (arg_type))
Where X is a hole. */
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
+ if (gdbarch_byte_order(gdbarch) == BFD_ENDIAN_BIG
&& (typecode == TYPE_CODE_STRUCT
|| typecode == TYPE_CODE_UNION)
&& argreg > SCORE_LAST_ARG_REGNUM
while (arglen > 0)
{
int partial_len = arglen < SCORE_REGSIZE ? arglen : SCORE_REGSIZE;
- ULONGEST regval = extract_unsigned_integer (val, partial_len);
+ ULONGEST regval = extract_unsigned_integer (val, partial_len,
+ byte_order);
/* The last part of a arg should shift left when
- TARGET_BYTE_ORDER is BFD_ENDIAN_BIG. */
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
+ gdbarch_byte_order is BFD_ENDIAN_BIG. */
+ if (byte_order == BFD_ENDIAN_BIG
&& arg_last_part_p == 1
&& (typecode == TYPE_CODE_STRUCT
|| typecode == TYPE_CODE_UNION))
return sp;
}
-static inst_t *
-score_fetch_instruction (CORE_ADDR addr)
-{
- static inst_t inst = { 0, 0 };
- char buf[SCORE_INSTLEN];
- int big;
- int ret = target_read_memory (addr & ~0x3, buf, SCORE_INSTLEN);
- unsigned int raw;
-
- if (ret)
- {
- memory_error (ret, addr);
- return 0;
- }
- inst.raw = extract_unsigned_integer (buf, SCORE_INSTLEN);
- inst.is15 = !(inst.raw & 0x80008000);
- inst.v = RM_PBITS (inst.raw);
- big = (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG);
-
- if (inst.is15)
- {
- if (big ^ ((addr & 0x2) == 2))
- inst.v = G_FLD (inst.v, 29, 15);
- else
- inst.v = G_FLD (inst.v, 14, 0);
- }
- return &inst;
-}
-
static CORE_ADDR
-score_skip_prologue (CORE_ADDR pc)
+score7_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
{
CORE_ADDR cpc = pc;
int iscan = 32, stack_sub = 0;
while (iscan-- > 0)
{
- inst_t *inst = score_fetch_instruction (cpc);
+ inst_t *inst = score7_fetch_inst (gdbarch, cpc, NULL);
if (!inst)
break;
- if (!inst->is15 && !stack_sub
+ if ((inst->len == 4) && !stack_sub
&& (G_FLD (inst->v, 29, 25) == 0x1
&& G_FLD (inst->v, 24, 20) == 0x0))
{
/* addi r0, offset */
- pc = stack_sub = cpc + SCORE_INSTLEN;
+ stack_sub = cpc + SCORE_INSTLEN;
+ pc = cpc + SCORE_INSTLEN;
}
- else if (!inst->is15
- && inst->v == RM_PBITS (0x8040bc56))
+ else if ((inst->len == 4)
+ && (G_FLD (inst->v, 29, 25) == 0x0)
+ && (G_FLD (inst->v, 24, 20) == 0x2)
+ && (G_FLD (inst->v, 19, 15) == 0x0)
+ && (G_FLD (inst->v, 14, 10) == 0xF)
+ && (G_FLD (inst->v, 9, 0) == 0x56))
{
/* mv r2, r0 */
pc = cpc + SCORE_INSTLEN;
break;
}
- else if (inst->is15
- && inst->v == RM_PBITS (0x0203))
+ else if ((inst->len == 2)
+ && (G_FLD (inst->v, 14, 12) == 0x0)
+ && (G_FLD (inst->v, 11, 8) == 0x2)
+ && (G_FLD (inst->v, 7, 4) == 0x0)
+ && (G_FLD (inst->v, 3, 0) == 0x3))
{
/* mv! r2, r0 */
pc = cpc + SCORE16_INSTLEN;
break;
}
- else if (inst->is15
+ else if ((inst->len == 2)
&& ((G_FLD (inst->v, 14, 12) == 3) /* j15 form */
|| (G_FLD (inst->v, 14, 12) == 4) /* b15 form */
|| (G_FLD (inst->v, 14, 12) == 0x0
&& G_FLD (inst->v, 3, 0) == 0x4))) /* br! */
break;
- else if (!inst->is15
+ else if ((inst->len == 4)
&& ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */
|| (G_FLD (inst->v, 29, 25) == 4) /* b32 form */
|| (G_FLD (inst->v, 29, 25) == 0x0
&& G_FLD (inst->v, 6, 1) == 0x4))) /* br */
break;
- cpc += inst->is15 ? SCORE16_INSTLEN : SCORE_INSTLEN;
+ cpc += (inst->len == 2) ? SCORE16_INSTLEN : SCORE_INSTLEN;
+ }
+ return pc;
+}
+
+static CORE_ADDR
+score3_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
+{
+ CORE_ADDR cpc = pc;
+ int iscan = 32, stack_sub = 0;
+ while (iscan-- > 0)
+ {
+ inst_t *inst
+ = score3_adjust_pc_and_fetch_inst (&cpc, NULL,
+ gdbarch_byte_order (gdbarch));
+
+ if (!inst)
+ break;
+ if (inst->len == 4 && !stack_sub
+ && (G_FLD (inst->v, 29, 25) == 0x1)
+ && (G_FLD (inst->v, 19, 17) == 0x0)
+ && (G_FLD (inst->v, 24, 20) == 0x0))
+ {
+ /* addi r0, offset */
+ stack_sub = cpc + inst->len;
+ pc = cpc + inst->len;
+ }
+ else if (inst->len == 4
+ && (G_FLD (inst->v, 29, 25) == 0x0)
+ && (G_FLD (inst->v, 24, 20) == 0x2)
+ && (G_FLD (inst->v, 19, 15) == 0x0)
+ && (G_FLD (inst->v, 14, 10) == 0xF)
+ && (G_FLD (inst->v, 9, 0) == 0x56))
+ {
+ /* mv r2, r0 */
+ pc = cpc + inst->len;
+ break;
+ }
+ else if ((inst->len == 2)
+ && (G_FLD (inst->v, 14, 10) == 0x10)
+ && (G_FLD (inst->v, 9, 5) == 0x2)
+ && (G_FLD (inst->v, 4, 0) == 0x0))
+ {
+ /* mv! r2, r0 */
+ pc = cpc + inst->len;
+ break;
+ }
+ else if (inst->len == 2
+ && ((G_FLD (inst->v, 14, 12) == 3) /* b15 form */
+ || (G_FLD (inst->v, 14, 12) == 0x0
+ && G_FLD (inst->v, 11, 5) == 0x4))) /* br! */
+ break;
+ else if (inst->len == 4
+ && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */
+ || (G_FLD (inst->v, 29, 25) == 4))) /* b32 form */
+ break;
+
+ cpc += inst->len;
}
return pc;
}
+/* Implement the stack_frame_destroyed_p gdbarch method. */
+
static int
-score_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc)
+score7_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc)
{
- inst_t *inst = score_fetch_instruction (cur_pc);
+ inst_t *inst = score7_fetch_inst (gdbarch, cur_pc, NULL);
if (inst->v == 0x23)
return 1; /* mv! r0, r2 */
return 0;
}
+/* Implement the stack_frame_destroyed_p gdbarch method. */
+
+static int
+score3_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc)
+{
+ CORE_ADDR pc = cur_pc;
+ inst_t *inst
+ = score3_adjust_pc_and_fetch_inst (&pc, NULL,
+ gdbarch_byte_order (gdbarch));
+
+ if (inst->len == 2
+ && (G_FLD (inst->v, 14, 10) == 0x10)
+ && (G_FLD (inst->v, 9, 5) == 0x0)
+ && (G_FLD (inst->v, 4, 0) == 0x2))
+ return 1; /* mv! r0, r2 */
+ else if (inst->len == 4
+ && (G_FLD (inst->v, 29, 25) == 0x0)
+ && (G_FLD (inst->v, 24, 20) == 0x2)
+ && (G_FLD (inst->v, 19, 15) == 0x0)
+ && (G_FLD (inst->v, 14, 10) == 0xF)
+ && (G_FLD (inst->v, 9, 0) == 0x56))
+ return 1; /* mv r0, r2 */
+ else if (inst->len == 2
+ && (G_FLD (inst->v, 14, 12) == 0x0)
+ && (G_FLD (inst->v, 11, 5) == 0x2))
+ return 1; /* pop! */
+ else if (inst->len == 2
+ && (G_FLD (inst->v, 14, 12) == 0x0)
+ && (G_FLD (inst->v, 11, 7) == 0x0)
+ && (G_FLD (inst->v, 6, 5) == 0x2))
+ return 1; /* rpop! */
+ else if (inst->len == 2
+ && (G_FLD (inst->v, 14, 12) == 0x0)
+ && (G_FLD (inst->v, 11, 5) == 0x4)
+ && (G_FLD (inst->v, 4, 0) == 0x3))
+ return 1; /* br! r3 */
+ else if (inst->len == 4
+ && (G_FLD (inst->v, 29, 25) == 0x0)
+ && (G_FLD (inst->v, 24, 20) == 0x0)
+ && (G_FLD (inst->v, 19, 15) == 0x3)
+ && (G_FLD (inst->v, 14, 10) == 0xF)
+ && (G_FLD (inst->v, 9, 0) == 0x8))
+ return 1; /* br r3 */
+ else
+ return 0;
+}
+
+static gdb_byte *
+score7_malloc_and_get_memblock (CORE_ADDR addr, CORE_ADDR size)
+{
+ int ret;
+ gdb_byte *memblock = NULL;
+
+ if (size == 0)
+ return NULL;
+
+ memblock = (gdb_byte *) xmalloc (size);
+ memset (memblock, 0, size);
+ ret = target_read_memory (addr & ~0x3, memblock, size);
+ if (ret)
+ {
+ error (_("Error: target_read_memory in file:%s, line:%d!"),
+ __FILE__, __LINE__);
+ return NULL;
+ }
+ return memblock;
+}
+
+static void
+score7_free_memblock (gdb_byte *memblock)
+{
+ xfree (memblock);
+}
+
+static void
+score7_adjust_memblock_ptr (gdb_byte **memblock, CORE_ADDR prev_pc,
+ CORE_ADDR cur_pc)
+{
+ if (prev_pc == -1)
+ {
+ /* First time call this function, do nothing. */
+ }
+ else if (cur_pc - prev_pc == 2 && (cur_pc & 0x3) == 0)
+ {
+ /* First 16-bit instruction, then 32-bit instruction. */
+ *memblock += SCORE_INSTLEN;
+ }
+ else if (cur_pc - prev_pc == 4)
+ {
+ /* Is 32-bit instruction, increase MEMBLOCK by 4. */
+ *memblock += SCORE_INSTLEN;
+ }
+}
+
static void
-score_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc,
- struct frame_info *next_frame,
+score7_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc,
+ struct frame_info *this_frame,
struct score_frame_cache *this_cache)
{
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
CORE_ADDR sp;
+ CORE_ADDR fp;
CORE_ADDR cur_pc = startaddr;
int sp_offset = 0;
int fp_offset_p = 0;
int inst_len = 0;
- sp = frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM);
+ gdb_byte *memblock = NULL;
+ gdb_byte *memblock_ptr = NULL;
+ CORE_ADDR prev_pc = -1;
- for (; cur_pc < pc; cur_pc += inst_len)
+ /* Allocate MEMBLOCK if PC - STARTADDR > 0. */
+ memblock_ptr = memblock =
+ score7_malloc_and_get_memblock (startaddr, pc - startaddr);
+
+ sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM);
+ fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM);
+
+ for (; cur_pc < pc; prev_pc = cur_pc, cur_pc += inst_len)
{
- inst_t *inst = score_fetch_instruction (cur_pc);
- if (inst->is15 == 1)
+ inst_t *inst = NULL;
+ if (memblock != NULL)
+ {
+ /* Reading memory block from target successfully and got all
+ the instructions(from STARTADDR to PC) needed. */
+ score7_adjust_memblock_ptr (&memblock, prev_pc, cur_pc);
+ inst = score7_fetch_inst (gdbarch, cur_pc, memblock);
+ }
+ else
+ {
+ /* Otherwise, we fetch 4 bytes from target, and GDB also
+ work correctly. */
+ inst = score7_fetch_inst (gdbarch, cur_pc, NULL);
+ }
+
+ /* FIXME: make a full-power prologue analyzer. */
+ if (inst->len == 2)
{
inst_len = SCORE16_INSTLEN;
&& G_FLD (inst->v, 2, 0) == 0x0)
{
/* subei! r0, n */
- sp_offset += (int) pow (2, G_FLD (inst->v, 6, 3));
+ sp_offset += (int) pow (2.0, G_FLD (inst->v, 6, 3));
}
else if (G_FLD (inst->v, 14, 7) == 0xc0
&& G_FLD (inst->v, 2, 0) == 0x0)
{
/* addei! r0, n */
- sp_offset -= (int) pow (2, G_FLD (inst->v, 6, 3));
+ /* Solaris 11+gcc 5.5 has ambiguous overloads of pow, so we
+ pass 2.0 instead of 2 to get the right one. */
+ sp_offset -= (int) pow (2.0, G_FLD (inst->v, 6, 3));
}
}
else
{
inst_len = SCORE_INSTLEN;
- if (G_FLD (inst->v, 29, 15) == 0xc60
- && G_FLD (inst->v, 2, 0) == 0x4)
+ if (G_FLD(inst->v, 29, 25) == 0x3
+ && G_FLD(inst->v, 2, 0) == 0x4
+ && G_FLD(inst->v, 19, 15) == 0)
{
- /* sw r3, [r0, offset]+ */
- sp_offset += SCORE_INSTLEN;
- if (ra_offset_p == 0)
- {
- ra_offset = sp_offset;
- ra_offset_p = 1;
- }
+ /* sw rD, [r0, offset]+ */
+ sp_offset += SCORE_INSTLEN;
+
+ if (G_FLD(inst->v, 24, 20) == 0x3)
+ {
+ /* rD = r3 */
+ if (ra_offset_p == 0)
+ {
+ ra_offset = sp_offset;
+ ra_offset_p = 1;
+ }
+ }
+ else if (G_FLD(inst->v, 24, 20) == 0x2)
+ {
+ /* rD = r2 */
+ if (fp_offset_p == 0)
+ {
+ fp_offset = sp_offset;
+ fp_offset_p = 1;
+ }
+ }
}
- if (G_FLD (inst->v, 29, 15) == 0xc40
- && G_FLD (inst->v, 2, 0) == 0x4)
+ else if (G_FLD(inst->v, 29, 25) == 0x14
+ && G_FLD(inst->v, 19,15) == 0)
{
- /* sw r2, [r0, offset]+ */
- sp_offset += SCORE_INSTLEN;
- if (fp_offset_p == 0)
- {
- fp_offset = sp_offset;
- fp_offset_p = 1;
- }
+ /* sw rD, [r0, offset] */
+ if (G_FLD(inst->v, 24, 20) == 0x3)
+ {
+ /* rD = r3 */
+ ra_offset = sp_offset - G_FLD(inst->v, 14, 0);
+ ra_offset_p = 1;
+ }
+ else if (G_FLD(inst->v, 24, 20) == 0x2)
+ {
+ /* rD = r2 */
+ fp_offset = sp_offset - G_FLD(inst->v, 14, 0);
+ fp_offset_p = 1;
+ }
}
else if (G_FLD (inst->v, 29, 15) == 0x1c60
&& G_FLD (inst->v, 2, 0) == 0x0)
{
unsigned int save_v = inst->v;
inst_t *inst2 =
- score_fetch_instruction (cur_pc + SCORE_INSTLEN);
+ score7_fetch_inst (gdbarch, cur_pc + SCORE_INSTLEN, NULL);
if (inst2->v == 0x23)
- /* mv! r0, r2 */
- sp_offset -= G_FLD (save_v, 16, 1);
+ {
+ /* mv! r0, r2 */
+ sp_offset -= G_FLD (save_v, 16, 1);
+ }
}
}
}
sp + sp_offset - fp_offset;
}
- /* Save SP. */
- this_cache->base =
- frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM) + sp_offset;
+ /* Save SP and FP. */
+ this_cache->base = sp + sp_offset;
+ this_cache->fp = fp;
+
+ /* Don't forget to free MEMBLOCK if we allocated it. */
+ if (memblock_ptr != NULL)
+ score7_free_memblock (memblock_ptr);
+}
+
+static void
+score3_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc,
+ struct frame_info *this_frame,
+ struct score_frame_cache *this_cache)
+{
+ CORE_ADDR sp;
+ CORE_ADDR fp;
+ CORE_ADDR cur_pc = startaddr;
+ enum bfd_endian byte_order
+ = gdbarch_byte_order (get_frame_arch (this_frame));
+
+ int sp_offset = 0;
+ int ra_offset = 0;
+ int fp_offset = 0;
+ int ra_offset_p = 0;
+ int fp_offset_p = 0;
+ int inst_len = 0;
+
+ sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM);
+ fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM);
+
+ for (; cur_pc < pc; cur_pc += inst_len)
+ {
+ inst_t *inst = NULL;
+
+ inst = score3_adjust_pc_and_fetch_inst (&cur_pc, &inst_len, byte_order);
+
+ /* FIXME: make a full-power prologue analyzer. */
+ if (inst->len == 2)
+ {
+ if (G_FLD (inst->v, 14, 12) == 0x0
+ && G_FLD (inst->v, 11, 7) == 0x0
+ && G_FLD (inst->v, 6, 5) == 0x3)
+ {
+ /* push! */
+ sp_offset += 4;
+
+ if (G_FLD (inst->v, 4, 0) == 0x3
+ && ra_offset_p == 0)
+ {
+ /* push! r3, [r0] */
+ ra_offset = sp_offset;
+ ra_offset_p = 1;
+ }
+ else if (G_FLD (inst->v, 4, 0) == 0x2
+ && fp_offset_p == 0)
+ {
+ /* push! r2, [r0] */
+ fp_offset = sp_offset;
+ fp_offset_p = 1;
+ }
+ }
+ else if (G_FLD (inst->v, 14, 12) == 0x6
+ && G_FLD (inst->v, 11, 10) == 0x3)
+ {
+ /* rpush! */
+ int start_r = G_FLD (inst->v, 9, 5);
+ int cnt = G_FLD (inst->v, 4, 0);
+
+ if ((ra_offset_p == 0)
+ && (start_r <= SCORE_RA_REGNUM)
+ && (SCORE_RA_REGNUM < start_r + cnt))
+ {
+ /* rpush! contains r3 */
+ ra_offset_p = 1;
+ ra_offset = sp_offset + 4 * (SCORE_RA_REGNUM - start_r) + 4;
+ }
+
+ if ((fp_offset_p == 0)
+ && (start_r <= SCORE_FP_REGNUM)
+ && (SCORE_FP_REGNUM < start_r + cnt))
+ {
+ /* rpush! contains r2 */
+ fp_offset_p = 1;
+ fp_offset = sp_offset + 4 * (SCORE_FP_REGNUM - start_r) + 4;
+ }
+
+ sp_offset += 4 * cnt;
+ }
+ else if (G_FLD (inst->v, 14, 12) == 0x0
+ && G_FLD (inst->v, 11, 7) == 0x0
+ && G_FLD (inst->v, 6, 5) == 0x2)
+ {
+ /* pop! */
+ sp_offset -= 4;
+ }
+ else if (G_FLD (inst->v, 14, 12) == 0x6
+ && G_FLD (inst->v, 11, 10) == 0x2)
+ {
+ /* rpop! */
+ sp_offset -= 4 * G_FLD (inst->v, 4, 0);
+ }
+ else if (G_FLD (inst->v, 14, 12) == 0x5
+ && G_FLD (inst->v, 11, 10) == 0x3
+ && G_FLD (inst->v, 9, 6) == 0x0)
+ {
+ /* addi! r0, -offset */
+ int imm = G_FLD (inst->v, 5, 0);
+ if (imm >> 5)
+ imm = -(0x3F - imm + 1);
+ sp_offset -= imm;
+ }
+ else if (G_FLD (inst->v, 14, 12) == 0x5
+ && G_FLD (inst->v, 11, 10) == 0x3
+ && G_FLD (inst->v, 9, 6) == 0x2)
+ {
+ /* addi! r2, offset */
+ if (pc - cur_pc >= 2)
+ {
+ inst_t *inst2;
+
+ cur_pc += inst->len;
+ inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL,
+ byte_order);
+
+ if (inst2->len == 2
+ && G_FLD (inst2->v, 14, 10) == 0x10
+ && G_FLD (inst2->v, 9, 5) == 0x0
+ && G_FLD (inst2->v, 4, 0) == 0x2)
+ {
+ /* mv! r0, r2 */
+ int imm = G_FLD (inst->v, 5, 0);
+ if (imm >> 5)
+ imm = -(0x3F - imm + 1);
+ sp_offset -= imm;
+ }
+ }
+ }
+ }
+ else if (inst->len == 4)
+ {
+ if (G_FLD (inst->v, 29, 25) == 0x3
+ && G_FLD (inst->v, 2, 0) == 0x4
+ && G_FLD (inst->v, 24, 20) == 0x3
+ && G_FLD (inst->v, 19, 15) == 0x0)
+ {
+ /* sw r3, [r0, offset]+ */
+ sp_offset += inst->len;
+ if (ra_offset_p == 0)
+ {
+ ra_offset = sp_offset;
+ ra_offset_p = 1;
+ }
+ }
+ else if (G_FLD (inst->v, 29, 25) == 0x3
+ && G_FLD (inst->v, 2, 0) == 0x4
+ && G_FLD (inst->v, 24, 20) == 0x2
+ && G_FLD (inst->v, 19, 15) == 0x0)
+ {
+ /* sw r2, [r0, offset]+ */
+ sp_offset += inst->len;
+ if (fp_offset_p == 0)
+ {
+ fp_offset = sp_offset;
+ fp_offset_p = 1;
+ }
+ }
+ else if (G_FLD (inst->v, 29, 25) == 0x7
+ && G_FLD (inst->v, 2, 0) == 0x0
+ && G_FLD (inst->v, 24, 20) == 0x3
+ && G_FLD (inst->v, 19, 15) == 0x0)
+ {
+ /* lw r3, [r0]+, 4 */
+ sp_offset -= inst->len;
+ ra_offset_p = 1;
+ }
+ else if (G_FLD (inst->v, 29, 25) == 0x7
+ && G_FLD (inst->v, 2, 0) == 0x0
+ && G_FLD (inst->v, 24, 20) == 0x2
+ && G_FLD (inst->v, 19, 15) == 0x0)
+ {
+ /* lw r2, [r0]+, 4 */
+ sp_offset -= inst->len;
+ fp_offset_p = 1;
+ }
+ else if (G_FLD (inst->v, 29, 25) == 0x1
+ && G_FLD (inst->v, 19, 17) == 0x0
+ && G_FLD (inst->v, 24, 20) == 0x0
+ && G_FLD (inst->v, 0, 0) == 0x0)
+ {
+ /* addi r0, -offset */
+ int imm = G_FLD (inst->v, 16, 1);
+ if (imm >> 15)
+ imm = -(0xFFFF - imm + 1);
+ sp_offset -= imm;
+ }
+ else if (G_FLD (inst->v, 29, 25) == 0x1
+ && G_FLD (inst->v, 19, 17) == 0x0
+ && G_FLD (inst->v, 24, 20) == 0x2
+ && G_FLD (inst->v, 0, 0) == 0x0)
+ {
+ /* addi r2, offset */
+ if (pc - cur_pc >= 2)
+ {
+ inst_t *inst2;
+
+ cur_pc += inst->len;
+ inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL,
+ byte_order);
+
+ if (inst2->len == 2
+ && G_FLD (inst2->v, 14, 10) == 0x10
+ && G_FLD (inst2->v, 9, 5) == 0x0
+ && G_FLD (inst2->v, 4, 0) == 0x2)
+ {
+ /* mv! r0, r2 */
+ int imm = G_FLD (inst->v, 16, 1);
+ if (imm >> 15)
+ imm = -(0xFFFF - imm + 1);
+ sp_offset -= imm;
+ }
+ }
+ }
+ }
+ }
+
+ /* Save RA. */
+ if (ra_offset_p == 1)
+ {
+ if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1)
+ this_cache->saved_regs[SCORE_PC_REGNUM].addr =
+ sp + sp_offset - ra_offset;
+ }
+ else
+ {
+ this_cache->saved_regs[SCORE_PC_REGNUM] =
+ this_cache->saved_regs[SCORE_RA_REGNUM];
+ }
+
+ /* Save FP. */
+ if (fp_offset_p == 1)
+ {
+ if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1)
+ this_cache->saved_regs[SCORE_FP_REGNUM].addr =
+ sp + sp_offset - fp_offset;
+ }
+
+ /* Save SP and FP. */
+ this_cache->base = sp + sp_offset;
+ this_cache->fp = fp;
}
static struct score_frame_cache *
-score_make_prologue_cache (struct frame_info *next_frame, void **this_cache)
+score_make_prologue_cache (struct frame_info *this_frame, void **this_cache)
{
struct score_frame_cache *cache;
if ((*this_cache) != NULL)
- return (*this_cache);
+ return (struct score_frame_cache *) (*this_cache);
cache = FRAME_OBSTACK_ZALLOC (struct score_frame_cache);
(*this_cache) = cache;
- cache->saved_regs = trad_frame_alloc_saved_regs (next_frame);
+ cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
/* Analyze the prologue. */
{
- const CORE_ADDR pc = frame_pc_unwind (next_frame);
+ const CORE_ADDR pc = get_frame_pc (this_frame);
CORE_ADDR start_addr;
find_pc_partial_function (pc, NULL, &start_addr, NULL);
if (start_addr == 0)
return cache;
- score_analyze_prologue (start_addr, pc, next_frame, *this_cache);
+
+ if (target_mach == bfd_mach_score3)
+ score3_analyze_prologue (start_addr, pc, this_frame,
+ (struct score_frame_cache *) *this_cache);
+ else
+ score7_analyze_prologue (start_addr, pc, this_frame,
+ (struct score_frame_cache *) *this_cache);
}
/* Save SP. */
trad_frame_set_value (cache->saved_regs, SCORE_SP_REGNUM, cache->base);
- return (*this_cache);
+ return (struct score_frame_cache *) (*this_cache);
}
static void
-score_prologue_this_id (struct frame_info *next_frame, void **this_cache,
+score_prologue_this_id (struct frame_info *this_frame, void **this_cache,
struct frame_id *this_id)
{
- struct score_frame_cache *info = score_make_prologue_cache (next_frame,
+ struct score_frame_cache *info = score_make_prologue_cache (this_frame,
this_cache);
- (*this_id) = frame_id_build (info->base, frame_func_unwind (next_frame));
+ (*this_id) = frame_id_build (info->base, get_frame_func (this_frame));
}
-static void
-score_prologue_prev_register (struct frame_info *next_frame,
- void **this_cache,
- int regnum, int *optimizedp,
- enum lval_type *lvalp, CORE_ADDR * addrp,
- int *realnump, gdb_byte * valuep)
+static struct value *
+score_prologue_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
{
- struct score_frame_cache *info = score_make_prologue_cache (next_frame,
+ struct score_frame_cache *info = score_make_prologue_cache (this_frame,
this_cache);
- trad_frame_get_prev_register (next_frame, info->saved_regs, regnum,
- optimizedp, lvalp, addrp, realnump, valuep);
+ return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum);
}
static const struct frame_unwind score_prologue_unwind =
{
NORMAL_FRAME,
+ default_frame_unwind_stop_reason,
score_prologue_this_id,
- score_prologue_prev_register
+ score_prologue_prev_register,
+ NULL,
+ default_frame_sniffer,
+ NULL
};
-static const struct frame_unwind *
-score_prologue_sniffer (struct frame_info *next_frame)
-{
- return &score_prologue_unwind;
-}
-
static CORE_ADDR
-score_prologue_frame_base_address (struct frame_info *next_frame,
+score_prologue_frame_base_address (struct frame_info *this_frame,
void **this_cache)
{
struct score_frame_cache *info =
- score_make_prologue_cache (next_frame, this_cache);
- return info->base;
+ score_make_prologue_cache (this_frame, this_cache);
+ return info->fp;
}
static const struct frame_base score_prologue_frame_base =
};
static const struct frame_base *
-score_prologue_frame_base_sniffer (struct frame_info *next_frame)
+score_prologue_frame_base_sniffer (struct frame_info *this_frame)
{
return &score_prologue_frame_base;
}
+/* Core file support. */
+
+static const struct regcache_map_entry score7_linux_gregmap[] =
+ {
+ /* FIXME: According to the current Linux kernel, r0 is preceded by
+ 9 rather than 7 words. */
+ { 7, REGCACHE_MAP_SKIP, 4 },
+ { 32, 0, 4 }, /* r0 ... r31 */
+ { 1, 55, 4 }, /* CEL */
+ { 1, 54, 4 }, /* CEH */
+ { 1, 53, 4 }, /* sr0, i.e. cnt or COUNTER */
+ { 1, 52, 4 }, /* sr1, i.e. lcr or LDCR */
+ { 1, 51, 4 }, /* sr2, i.e. scr or STCR */
+ { 1, 49, 4 }, /* PC (same slot as EPC) */
+ { 1, 38, 4 }, /* EMA */
+ { 1, 32, 4 }, /* PSR */
+ { 1, 34, 4 }, /* ECR */
+ { 1, 33, 4 }, /* COND */
+ { 0 }
+ };
+
+#define SCORE7_LINUX_EPC_OFFSET (44 * 4)
+#define SCORE7_LINUX_SIZEOF_GREGSET (49 * 4)
+
+static void
+score7_linux_supply_gregset(const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *buf,
+ size_t size)
+{
+ regcache_supply_regset (regset, regcache, regnum, buf, size);
+
+ /* Supply the EPC from the same slot as the PC. Note that the
+ collect function will store the PC in that slot. */
+ if ((regnum == -1 || regnum == SCORE_EPC_REGNUM)
+ && size >= SCORE7_LINUX_EPC_OFFSET + 4)
+ regcache->raw_supply
+ (SCORE_EPC_REGNUM, (const gdb_byte *) buf + SCORE7_LINUX_EPC_OFFSET);
+}
+
+static const struct regset score7_linux_gregset =
+ {
+ score7_linux_gregmap,
+ score7_linux_supply_gregset,
+ regcache_collect_regset
+ };
+
+/* Iterate over core file register note sections. */
+
+static void
+score7_linux_iterate_over_regset_sections (struct gdbarch *gdbarch,
+ iterate_over_regset_sections_cb *cb,
+ void *cb_data,
+ const struct regcache *regcache)
+{
+ cb (".reg", SCORE7_LINUX_SIZEOF_GREGSET, SCORE7_LINUX_SIZEOF_GREGSET,
+ &score7_linux_gregset, NULL, cb_data);
+}
+
static struct gdbarch *
score_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
struct gdbarch *gdbarch;
+ target_mach = info.bfd_arch_info->mach;
arches = gdbarch_list_lookup_by_info (arches, &info);
if (arches != NULL)
{
return (arches->gdbarch);
}
- gdbarch = gdbarch_alloc (&info, 0);
+ gdbarch = gdbarch_alloc (&info, NULL);
set_gdbarch_short_bit (gdbarch, 16);
set_gdbarch_int_bit (gdbarch, 32);
set_gdbarch_float_bit (gdbarch, 32);
set_gdbarch_double_bit (gdbarch, 64);
set_gdbarch_long_double_bit (gdbarch, 64);
+#if WITH_SIM
set_gdbarch_register_sim_regno (gdbarch, score_register_sim_regno);
+#endif
set_gdbarch_pc_regnum (gdbarch, SCORE_PC_REGNUM);
set_gdbarch_sp_regnum (gdbarch, SCORE_SP_REGNUM);
- set_gdbarch_num_regs (gdbarch, SCORE_NUM_REGS);
- set_gdbarch_register_name (gdbarch, score_register_name);
- set_gdbarch_breakpoint_from_pc (gdbarch, score_breakpoint_from_pc);
+ set_gdbarch_adjust_breakpoint_address (gdbarch,
+ score_adjust_breakpoint_address);
set_gdbarch_register_type (gdbarch, score_register_type);
set_gdbarch_frame_align (gdbarch, score_frame_align);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
- set_gdbarch_read_sp (gdbarch, score_read_sp);
- set_gdbarch_unwind_pc (gdbarch, score_unwind_pc);
- set_gdbarch_print_insn (gdbarch, score_print_insn);
- set_gdbarch_skip_prologue (gdbarch, score_skip_prologue);
- set_gdbarch_in_function_epilogue_p (gdbarch, score_in_function_epilogue_p);
- set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
+
+ switch (target_mach)
+ {
+ case bfd_mach_score7:
+ set_gdbarch_breakpoint_kind_from_pc (gdbarch,
+ score7_breakpoint_kind_from_pc);
+ set_gdbarch_sw_breakpoint_from_kind (gdbarch,
+ score7_sw_breakpoint_from_kind);
+ set_gdbarch_skip_prologue (gdbarch, score7_skip_prologue);
+ set_gdbarch_stack_frame_destroyed_p (gdbarch,
+ score7_stack_frame_destroyed_p);
+ set_gdbarch_register_name (gdbarch, score7_register_name);
+ set_gdbarch_num_regs (gdbarch, SCORE7_NUM_REGS);
+ /* Core file support. */
+ set_gdbarch_iterate_over_regset_sections
+ (gdbarch, score7_linux_iterate_over_regset_sections);
+ break;
+
+ case bfd_mach_score3:
+ set_gdbarch_breakpoint_kind_from_pc (gdbarch,
+ score3_breakpoint_kind_from_pc);
+ set_gdbarch_sw_breakpoint_from_kind (gdbarch,
+ score3_sw_breakpoint_from_kind);
+ set_gdbarch_skip_prologue (gdbarch, score3_skip_prologue);
+ set_gdbarch_stack_frame_destroyed_p (gdbarch,
+ score3_stack_frame_destroyed_p);
+ set_gdbarch_register_name (gdbarch, score3_register_name);
+ set_gdbarch_num_regs (gdbarch, SCORE3_NUM_REGS);
+ break;
+ }
+
+ /* Watchpoint hooks. */
+ set_gdbarch_have_nonsteppable_watchpoint (gdbarch, 1);
+
+ /* Dummy frame hooks. */
set_gdbarch_return_value (gdbarch, score_return_value);
- set_gdbarch_unwind_dummy_id (gdbarch, score_unwind_dummy_id);
+ set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
set_gdbarch_push_dummy_call (gdbarch, score_push_dummy_call);
- frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
+ /* Normal frame hooks. */
+ dwarf2_append_unwinders (gdbarch);
frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer);
- frame_unwind_append_sniffer (gdbarch, score_prologue_sniffer);
+ frame_unwind_append_unwinder (gdbarch, &score_prologue_unwind);
frame_base_append_sniffer (gdbarch, score_prologue_frame_base_sniffer);
return gdbarch;
}
-extern initialize_file_ftype _initialize_score_tdep;
-
+void _initialize_score_tdep ();
void
-_initialize_score_tdep (void)
+_initialize_score_tdep ()
{
gdbarch_register (bfd_arch_score, score_gdbarch_init, NULL);
}
projects / deliverable / binutils-gdb.git / blobdiff