/* Target-dependent code for the S+core architecture, for GDB,
the GNU Debugger.
- Copyright (C) 2006, 2007 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)
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
struct trad_frame_saved_reg *saved_regs;
};
-#if 0
-/* If S+core GCC will generate these instructions in the prologue:
+static int target_mach = bfd_mach_score7;
- 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
+static struct type *
+score_register_type (struct gdbarch *gdbarch, int regnum)
{
- CORE_ADDR p_frame;
- unsigned int pdr[P_SIZE];
-} extra_info_t;
+ gdb_assert (regnum >= 0
+ && regnum < ((target_mach == bfd_mach_score7)
+ ? SCORE7_NUM_REGS : SCORE3_NUM_REGS));
+ return builtin_type (gdbarch)->builtin_uint32;
+}
-struct obj_priv
+static const char *
+score7_register_name (struct gdbarch *gdbarch, int regnum)
{
- bfd_size_type size;
- char *contents;
-};
+ 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 bfd *the_bfd;
+ "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 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;
+ gdb_assert (regnum >= 0 && regnum < SCORE7_NUM_REGS);
+ return score_register_names[regnum];
}
-static void
-score_analyze_pdr_section (CORE_ADDR startaddr, CORE_ADDR pc,
- struct frame_info *next_frame,
- struct score_frame_cache *this_cache)
+static const char *
+score3_register_name (struct gdbarch *gdbarch, int regnum)
{
- struct symbol *sym;
- struct obj_section *sec;
- extra_info_t *fci_ext;
- CORE_ADDR leaf_ra_stack_addr = -1;
+ 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",
- gdb_assert (startaddr <= pc);
- gdb_assert (this_cache != NULL);
+ "PSR", "COND", "ECR", "EXCPVEC", "CCR",
+ "EPC", "EMA", "PREV", "DREG", "DSAVE",
+ "COUNTER", "LDCR", "STCR", "CEH", "CEL",
+ "", "", "PC",
+ };
- fci_ext = frame_obstack_zalloc (sizeof (extra_info_t));
- if ((sec = find_pc_section (pc)) == NULL)
- {
- error ("Error: Can't find section in file:%s, line:%d!",
- __FILE__, __LINE__);
- return;
- }
+ gdb_assert (regnum >= 0 && regnum < SCORE3_NUM_REGS);
+ return score_register_names[regnum];
+}
- /* 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
- }
- }
- }
+#if WITH_SIM
+static int
+score_register_sim_regno (struct gdbarch *gdbarch, int regnum)
+{
+ gdb_assert (regnum >= 0
+ && regnum < ((target_mach == bfd_mach_score7)
+ ? SCORE7_NUM_REGS : SCORE3_NUM_REGS));
+ return regnum;
}
#endif
-#if 0
-/* Open these functions if build with simulator. */
-
-int
-score_target_can_use_watch (int type, int cnt, int othertype)
+static inst_t *
+score7_fetch_inst (struct gdbarch *gdbarch, CORE_ADDR addr, gdb_byte *memblock)
{
- if (strcmp (current_target.to_shortname, "sim") == 0)
- {
- return soc_gh_can_use_watch (type, cnt);
+ 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 (*current_target.to_can_use_hw_breakpoint) (type, cnt, othertype);
+ /* 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;
+ }
}
-}
-int
-score_stopped_by_watch (void)
-{
- if (strcmp (current_target.to_shortname, "sim") == 0)
- {
- return soc_gh_stopped_by_watch ();
- }
- else
+ 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)
{
- return (*current_target.to_stopped_by_watchpoint) ();
+ if (big ^ ((addr & 0x2) == 2))
+ inst.v = G_FLD (inst.v, 29, 15);
+ else
+ inst.v = G_FLD (inst.v, 14, 0);
}
+ return &inst;
}
-int
-score_target_insert_watchpoint (CORE_ADDR addr, int len, int type)
+static inst_t *
+score3_adjust_pc_and_fetch_inst (CORE_ADDR *pcptr, int *lenptr,
+ enum bfd_endian byte_order)
{
- if (strcmp (current_target.to_shortname, "sim") == 0)
- {
- return soc_gh_add_watch (addr, len, type);
- }
- else
+ 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] =
{
- return (*current_target.to_insert_watchpoint) (addr, len, type);
+ /* 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;
-int
-score_target_remove_watchpoint (CORE_ADDR addr, int len, int type)
-{
- if (strcmp (current_target.to_shortname, "sim") == 0)
- {
- return soc_gh_del_watch (addr, len, type);
+ if (cbits & 0x4)
+ {
+ /* table 1 */
+ cbits = (cbits >> 1) & 0x7;
+ bk_index = cbits;
}
else
{
- return (*current_target.to_remove_watchpoint) (addr, len, type);
+ /* table 2 */
+ cbits = (cbits >> 2) & 0x7;
+ bk_index = cbits + 8;
}
-}
-int
-score_target_insert_hw_breakpoint (struct bp_target_info * bp_tgt)
-{
- if (strcmp (current_target.to_shortname, "sim") == 0)
- {
- return soc_gh_add_hardbp (bp_tgt->placed_address);
+ 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);
}
- else
+
+ switch (inst.len)
{
- return (*current_target.to_insert_hw_breakpoint) (bp_tgt);
+ 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;
}
-int
-score_target_remove_hw_breakpoint (struct bp_target_info * bp_tgt)
+/* Implement the breakpoint_kind_from_pc gdbarch method. */
+
+static int
+score7_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr)
{
- if (strcmp (current_target.to_shortname, "sim") == 0)
- {
- return soc_gh_del_hardbp (bp_tgt->placed_address);
+ 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)
+ {
+ error (_("Error: target_read_memory in file:%s, line:%d!"),
+ __FILE__, __LINE__);
+ }
+ raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order);
+
+ if (!(raw & 0x80008000))
+ {
+ /* 16bits instruction. */
+ *pcptr &= ~0x1;
+ return 2;
}
else
{
- return (*current_target.to_remove_hw_breakpoint) (bp_tgt);
+ /* 32bits instruction. */
+ *pcptr &= ~0x3;
+ return 4;
}
}
-#endif
-static struct type *
-score_register_type (struct gdbarch *gdbarch, int regnum)
-{
- gdb_assert (regnum >= 0 && regnum < SCORE_NUM_REGS);
- return builtin_type_uint32;
-}
+/* Implement the sw_breakpoint_from_kind gdbarch method. */
-static CORE_ADDR
-score_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
+static const gdb_byte *
+score7_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size)
{
- return frame_unwind_register_unsigned (next_frame, SCORE_PC_REGNUM);
-}
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
-static CORE_ADDR
-score_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
-{
- return frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM);
-}
+ *size = kind;
-static const char *
-score_register_name (int regnum)
-{
- 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",
+ if (kind == 4)
+ {
+ static gdb_byte big_breakpoint32[] = { 0x80, 0x00, 0x80, 0x06 };
+ static gdb_byte little_breakpoint32[] = { 0x06, 0x80, 0x00, 0x80 };
- "PSR", "COND", "ECR", "EXCPVEC",
- "CCR", "EPC", "EMA", "TLBLOCK",
- "TLBPT", "PEADDR", "TLBRPT", "PEVN",
- "PECTX", "LIMPFN", "LDMPFN", "PREV",
- "DREG", "PC", "DSAVE", "COUNTER",
- "LDCR", "STCR", "CEH", "CEL",
- };
+ if (byte_order == BFD_ENDIAN_BIG)
+ return big_breakpoint32;
+ else
+ return little_breakpoint32;
+ }
+ else
+ {
+ static gdb_byte big_breakpoint16[] = { 0x60, 0x02 };
+ static gdb_byte little_breakpoint16[] = { 0x02, 0x60 };
- gdb_assert (regnum >= 0 && regnum < SCORE_NUM_REGS);
- return score_register_names[regnum];
+ if (byte_order == BFD_ENDIAN_BIG)
+ return big_breakpoint16;
+ else
+ return little_breakpoint16;
+ }
}
-static int
-score_register_sim_regno (int regnum)
-{
- gdb_assert (regnum >= 0 && regnum < SCORE_NUM_REGS);
- return regnum;
-}
+/* Implement the breakpoint_kind_from_pc gdbarch method. */
static int
-score_print_insn (bfd_vma memaddr, struct disassemble_info *info)
+score3_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr)
{
- if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG)
- return print_insn_big_score (memaddr, info);
- else
- return print_insn_little_score (memaddr, info);
+ 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 *
-score_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
+score3_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size)
{
- gdb_byte buf[SCORE_INSTLEN] = { 0 };
- int ret;
- unsigned int raw;
+ 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];
+}
- if ((ret = target_read_memory (*pcptr & ~0x3, buf, SCORE_INSTLEN)) != 0)
- {
- error ("Error: target_read_memory in file:%s, line:%d!",
- __FILE__, __LINE__);
- }
- raw = extract_unsigned_integer (buf, SCORE_INSTLEN);
+static CORE_ADDR
+score_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr)
+{
+ CORE_ADDR adjust_pc = bpaddr;
- if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG)
- {
- if (!(raw & 0x80008000))
- {
- /* 16bits instruction. */
- static gdb_byte big_breakpoint16[] = { 0x60, 0x02 };
- *pcptr &= ~0x1;
- *lenptr = sizeof (big_breakpoint16);
- return big_breakpoint16;
- }
- else
- {
- /* 32bits instruction. */
- static gdb_byte big_breakpoint32[] = { 0x80, 0x00, 0x80, 0x06 };
- *pcptr &= ~0x3;
- *lenptr = sizeof (big_breakpoint32);
- return big_breakpoint32;
- }
- }
+ if (target_mach == bfd_mach_score3)
+ score3_adjust_pc_and_fetch_inst (&adjust_pc, NULL,
+ gdbarch_byte_order (gdbarch));
else
- {
- if (!(raw & 0x80008000))
- {
- /* 16bits instruction. */
- static gdb_byte little_breakpoint16[] = { 0x02, 0x60 };
- *pcptr &= ~0x1;
- *lenptr = sizeof (little_breakpoint16);
- return little_breakpoint16;
- }
- else
- {
- /* 32bits instruction. */
- static gdb_byte little_breakpoint32[] = { 0x06, 0x80, 0x00, 0x80 };
- *pcptr &= ~0x3;
- *lenptr = sizeof (little_breakpoint32);
- return little_breakpoint32;
- }
- }
+ adjust_pc = align_down (adjust_pc, 2);
+
+ return adjust_pc;
}
static CORE_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:
- error ("Error: score_xfer_register in file:%s, line:%d!",
+ 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,
- gdbarch_byte_order (current_gdbarch),
+ 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)
|| (typecode == TYPE_CODE_FLT && TYPE_LENGTH (type) == 8))
{
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;
/* Step 3, Check if struct return then save the struct address to
r4 and increase the stack_offset by 4. */
- if (struct_return)
+ if (return_method == return_method_struct)
{
regcache_cooked_write_unsigned (regcache, argreg++, struct_addr);
stack_offset += SCORE_REGSIZE;
{
struct value *arg = args[argnum];
struct type *arg_type = check_typedef (value_type (arg));
- 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;
int arg_last_part_p = 0;
arglen = TYPE_LENGTH (arg_type);
- odd_sized_struct_p = (arglen > SCORE_REGSIZE
- && arglen % SCORE_REGSIZE != 0);
/* If a arg should be aligned to 8 bytes (long long or double),
the value should be put to even register numbers. */
Where X is a hole. */
- if (gdbarch_byte_order (current_gdbarch) == 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
gdbarch_byte_order is BFD_ENDIAN_BIG. */
- if (gdbarch_byte_order (current_gdbarch) == 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 char *
-score_malloc_and_get_memblock (CORE_ADDR addr, CORE_ADDR size)
-{
- int ret;
- char *memblock = NULL;
-
- if (size < 0)
- {
- error ("Error: malloc size < 0 in file:%s, line:%d!",
- __FILE__, __LINE__);
- return NULL;
- }
- else if (size == 0)
- return NULL;
-
- memblock = (char *) 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
-score_free_memblock (char *memblock)
-{
- xfree (memblock);
-}
-
-static void
-score_adjust_memblock_ptr (char **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 inst_t *
-score_fetch_inst (CORE_ADDR addr, char *memblock)
-{
- static inst_t inst = { 0, 0 };
- char 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
- {
- /* 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);
- inst.is15 = !(inst.raw & 0x80008000);
- inst.v = RM_PBITS (inst.raw);
- big = (gdbarch_byte_order (current_gdbarch) == 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_inst (cpc, NULL);
+ 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_inst (cur_pc, NULL);
+ 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 fp_offset_p = 0;
int inst_len = 0;
- char *memblock = NULL;
- char *memblock_ptr = NULL;
+ gdb_byte *memblock = NULL;
+ gdb_byte *memblock_ptr = NULL;
CORE_ADDR prev_pc = -1;
/* Allocate MEMBLOCK if PC - STARTADDR > 0. */
memblock_ptr = memblock =
- score_malloc_and_get_memblock (startaddr, pc - startaddr);
+ score7_malloc_and_get_memblock (startaddr, pc - startaddr);
- sp = frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM);
- fp = frame_unwind_register_unsigned (next_frame, SCORE_FP_REGNUM);
+ 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 = NULL;
if (memblock != NULL)
{
- /* Reading memory block from target succefully and got all
+ /* Reading memory block from target successfully and got all
the instructions(from STARTADDR to PC) needed. */
- score_adjust_memblock_ptr (&memblock, prev_pc, cur_pc);
- inst = score_fetch_inst (cur_pc, memblock);
+ 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 = score_fetch_inst (cur_pc, NULL);
+ inst = score7_fetch_inst (gdbarch, cur_pc, NULL);
}
- if (inst->is15 == 1)
+ /* 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_inst (cur_pc + SCORE_INSTLEN, NULL);
+ score7_fetch_inst (gdbarch, cur_pc + SCORE_INSTLEN, NULL);
if (inst2->v == 0x23)
{
/* mv! r0, r2 */
/* Don't forget to free MEMBLOCK if we allocated it. */
if (memblock_ptr != NULL)
- score_free_memblock (memblock_ptr);
+ 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, NORMAL_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);
+ score_make_prologue_cache (this_frame, this_cache);
return info->fp;
}
};
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_unwind_pc (gdbarch, score_unwind_pc);
- set_gdbarch_unwind_sp (gdbarch, score_unwind_sp);
- 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);
+
+ 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_call_dummy_location (gdbarch, AT_ENTRY_POINT);
- set_gdbarch_unwind_dummy_id (gdbarch, score_unwind_dummy_id);
set_gdbarch_push_dummy_call (gdbarch, score_push_dummy_call);
/* Normal frame hooks. */
- frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
+ 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