return gdb_print_insn_mips (memaddr, info);
}
-/* This function implements gdbarch_breakpoint_from_pc. It uses the
- program counter value to determine whether a 16- or 32-bit breakpoint
- should be used. It returns a pointer to a string of bytes that encode a
- breakpoint instruction, stores the length of the string to *lenptr, and
- adjusts pc (if necessary) to point to the actual memory location where
- the breakpoint should be inserted. */
-
-static const gdb_byte *
-mips_breakpoint_from_pc (struct gdbarch *gdbarch,
- CORE_ADDR *pcptr, int *lenptr)
+static int
+mips_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr)
{
CORE_ADDR pc = *pcptr;
- if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
+ if (mips_pc_is_mips16 (gdbarch, pc))
{
- if (mips_pc_is_mips16 (gdbarch, pc))
- {
- static gdb_byte mips16_big_breakpoint[] = { 0xe8, 0xa5 };
- *pcptr = unmake_compact_addr (pc);
- *lenptr = sizeof (mips16_big_breakpoint);
- return mips16_big_breakpoint;
- }
- else if (mips_pc_is_micromips (gdbarch, pc))
- {
- static gdb_byte micromips16_big_breakpoint[] = { 0x46, 0x85 };
- static gdb_byte micromips32_big_breakpoint[] = { 0, 0x5, 0, 0x7 };
- ULONGEST insn;
- int err;
- int size;
-
- insn = mips_fetch_instruction (gdbarch, ISA_MICROMIPS, pc, &err);
- size = err ? 2 : mips_insn_size (ISA_MICROMIPS, insn);
- *pcptr = unmake_compact_addr (pc);
- *lenptr = size;
- return (size == 2) ? micromips16_big_breakpoint
- : micromips32_big_breakpoint;
- }
- else
- {
- static gdb_byte big_breakpoint[] = { 0, 0x5, 0, 0xd };
+ *pcptr = unmake_compact_addr (pc);
+ return MIPS_BP_KIND_MIPS16;
+ }
+ else if (mips_pc_is_micromips (gdbarch, pc))
+ {
+ ULONGEST insn;
+ int status;
- *lenptr = sizeof (big_breakpoint);
- return big_breakpoint;
- }
+ *pcptr = unmake_compact_addr (pc);
+ insn = mips_fetch_instruction (gdbarch, ISA_MICROMIPS, pc, &status);
+ if (status || (mips_insn_size (ISA_MICROMIPS, insn) == 2))
+ return MIPS_BP_KIND_MICROMIPS16;
+ else
+ return MIPS_BP_KIND_MICROMIPS32;
}
else
+ return MIPS_BP_KIND_MIPS32;
+}
+
+static const gdb_byte *
+mips_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size)
+{
+ enum bfd_endian byte_order_for_code = gdbarch_byte_order_for_code (gdbarch);
+
+ switch (kind)
{
- if (mips_pc_is_mips16 (gdbarch, pc))
- {
- static gdb_byte mips16_little_breakpoint[] = { 0xa5, 0xe8 };
- *pcptr = unmake_compact_addr (pc);
- *lenptr = sizeof (mips16_little_breakpoint);
+ case MIPS_BP_KIND_MIPS16:
+ {
+ static gdb_byte mips16_big_breakpoint[] = { 0xe8, 0xa5 };
+ static gdb_byte mips16_little_breakpoint[] = { 0xa5, 0xe8 };
+
+ *size = 2;
+ if (byte_order_for_code == BFD_ENDIAN_BIG)
+ return mips16_big_breakpoint;
+ else
return mips16_little_breakpoint;
- }
- else if (mips_pc_is_micromips (gdbarch, pc))
- {
- static gdb_byte micromips16_little_breakpoint[] = { 0x85, 0x46 };
- static gdb_byte micromips32_little_breakpoint[] = { 0x5, 0, 0x7, 0 };
- ULONGEST insn;
- int err;
- int size;
-
- insn = mips_fetch_instruction (gdbarch, ISA_MICROMIPS, pc, &err);
- size = err ? 2 : mips_insn_size (ISA_MICROMIPS, insn);
- *pcptr = unmake_compact_addr (pc);
- *lenptr = size;
- return (size == 2) ? micromips16_little_breakpoint
- : micromips32_little_breakpoint;
- }
- else
- {
- static gdb_byte little_breakpoint[] = { 0xd, 0, 0x5, 0 };
+ }
+ case MIPS_BP_KIND_MICROMIPS16:
+ {
+ static gdb_byte micromips16_big_breakpoint[] = { 0x46, 0x85 };
+ static gdb_byte micromips16_little_breakpoint[] = { 0x85, 0x46 };
+
+ *size = 2;
+
+ if (byte_order_for_code == BFD_ENDIAN_BIG)
+ return micromips16_big_breakpoint;
+ else
+ return micromips16_little_breakpoint;
+ }
+ case MIPS_BP_KIND_MICROMIPS32:
+ {
+ static gdb_byte micromips32_big_breakpoint[] = { 0, 0x5, 0, 0x7 };
+ static gdb_byte micromips32_little_breakpoint[] = { 0x5, 0, 0x7, 0 };
+
+ *size = 4;
+ if (byte_order_for_code == BFD_ENDIAN_BIG)
+ return micromips32_big_breakpoint;
+ else
+ return micromips32_little_breakpoint;
+ }
+ case MIPS_BP_KIND_MIPS32:
+ {
+ static gdb_byte big_breakpoint[] = { 0, 0x5, 0, 0xd };
+ static gdb_byte little_breakpoint[] = { 0xd, 0, 0x5, 0 };
- *lenptr = sizeof (little_breakpoint);
+ *size = 4;
+ if (byte_order_for_code == BFD_ENDIAN_BIG)
+ return big_breakpoint;
+ else
return little_breakpoint;
- }
- }
+ }
+ default:
+ gdb_assert_not_reached ("unexpected mips breakpoint kind");
+ };
}
+/* This function implements gdbarch_breakpoint_from_pc. It uses the
+ program counter value to determine whether a 16- or 32-bit breakpoint
+ should be used. It returns a pointer to a string of bytes that encode a
+ breakpoint instruction, stores the length of the string to *lenptr, and
+ adjusts pc (if necessary) to point to the actual memory location where
+ the breakpoint should be inserted. */
+
+GDBARCH_BREAKPOINT_FROM_PC (mips)
+
/* Determine the remote breakpoint kind suitable for the PC. */
static void
mips_remote_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr,
int *kindptr)
{
- CORE_ADDR pc = *pcptr;
-
- if (mips_pc_is_mips16 (gdbarch, pc))
- {
- *pcptr = unmake_compact_addr (pc);
- *kindptr = MIPS_BP_KIND_MIPS16;
- }
- else if (mips_pc_is_micromips (gdbarch, pc))
- {
- ULONGEST insn;
- int status;
-
- insn = mips_fetch_instruction (gdbarch, ISA_MICROMIPS, pc, &status);
- if (status || (mips_insn_size (ISA_MICROMIPS, insn) == 2))
- *kindptr = MIPS_BP_KIND_MICROMIPS16;
- else
- *kindptr = MIPS_BP_KIND_MICROMIPS32;
-
- *pcptr = unmake_compact_addr (pc);
- }
- else
- *kindptr = MIPS_BP_KIND_MIPS32;
+ *kindptr = mips_breakpoint_kind_from_pc (gdbarch, pcptr);
}
/* Return non-zero if the standard MIPS instruction INST has a branch
projects / deliverable / binutils-gdb.git / blobdiff