Merge gdb and gdbserver implementations for siginfo

[deliverable/binutils-gdb.git] / gdb / mips-tdep.c

diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c
index 2275138001cb80ee44042f5958032ea605a1efc3..63c1560f568c849838933bff8f154606cd2642e4 100644 (file)
--- a/gdb/mips-tdep.c
+++ b/gdb/mips-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for the MIPS architecture, for GDB, the GNU Debugger.
 
-   Copyright (C) 1988-2015 Free Software Foundation, Inc.
+   Copyright (C) 1988-2016 Free Software Foundation, Inc.
 
    Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU
    and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin.
@@ -1429,12 +1429,12 @@ mips_write_pc (struct regcache *regcache, CORE_ADDR pc)
 
 static ULONGEST
 mips_fetch_instruction (struct gdbarch *gdbarch,
-                       enum mips_isa isa, CORE_ADDR addr, int *statusp)
+                       enum mips_isa isa, CORE_ADDR addr, int *errp)
 {
   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
   gdb_byte buf[MIPS_INSN32_SIZE];
   int instlen;
-  int status;
+  int err;
 
   switch (isa)
     {
@@ -1450,13 +1450,13 @@ mips_fetch_instruction (struct gdbarch *gdbarch,
       internal_error (__FILE__, __LINE__, _("invalid ISA"));
       break;
     }
-  status = target_read_memory (addr, buf, instlen);
-  if (statusp != NULL)
-    *statusp = status;
-  if (status)
+  err = target_read_memory (addr, buf, instlen);
+  if (errp != NULL)
+    *errp = err;
+  if (err != 0)
     {
-      if (statusp == NULL)
-       memory_error (status, addr);
+      if (errp == NULL)
+       memory_error (TARGET_XFER_E_IO, addr);
       return 0;
     }
   return extract_unsigned_integer (buf, instlen, byte_order);
@@ -1518,10 +1518,8 @@ mips_insn_size (enum mips_isa isa, ULONGEST insn)
   switch (isa)
     {
     case ISA_MICROMIPS:
-      if (micromips_op (insn) == 0x1f)
-        return 3 * MIPS_INSN16_SIZE;
-      else if (((micromips_op (insn) & 0x4) == 0x4)
-              || ((micromips_op (insn) & 0x7) == 0x0))
+      if ((micromips_op (insn) & 0x4) == 0x4
+         || (micromips_op (insn) & 0x7) == 0x0)
         return 2 * MIPS_INSN16_SIZE;
       else
         return MIPS_INSN16_SIZE;
@@ -1881,12 +1879,6 @@ micromips_next_pc (struct frame_info *frame, CORE_ADDR pc)
   pc += MIPS_INSN16_SIZE;
   switch (mips_insn_size (ISA_MICROMIPS, insn))
     {
-    /* 48-bit instructions.  */
-    case 3 * MIPS_INSN16_SIZE: /* POOL48A: bits 011111 */
-      /* No branch or jump instructions in this category.  */
-      pc += 2 * MIPS_INSN16_SIZE;
-      break;
-
     /* 32-bit instructions.  */
     case 2 * MIPS_INSN16_SIZE:
       insn <<= 16;
@@ -2993,13 +2985,6 @@ micromips_scan_prologue (struct gdbarch *gdbarch,
       loc += MIPS_INSN16_SIZE;
       switch (mips_insn_size (ISA_MICROMIPS, insn))
        {
-       /* 48-bit instructions.  */
-       case 3 * MIPS_INSN16_SIZE:
-         /* No prologue instructions in this category.  */
-         this_non_prologue_insn = 1;
-         loc += 2 * MIPS_INSN16_SIZE;
-         break;
-
        /* 32-bit instructions.  */
        case 2 * MIPS_INSN16_SIZE:
          insn <<= 16;
@@ -4041,11 +4026,6 @@ micromips_deal_with_atomic_sequence (struct gdbarch *gdbarch,
          its destination address.  */
       switch (mips_insn_size (ISA_MICROMIPS, insn))
        {
-       /* 48-bit instructions.  */
-       case 3 * MIPS_INSN16_SIZE: /* POOL48A: bits 011111 */
-         loc += 2 * MIPS_INSN16_SIZE;
-         break;
-
        /* 32-bit instructions.  */
        case 2 * MIPS_INSN16_SIZE:
          switch (micromips_op (insn))
@@ -6769,11 +6749,6 @@ micromips_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc)
       loc += MIPS_INSN16_SIZE;
       switch (mips_insn_size (ISA_MICROMIPS, insn))
        {
-       /* 48-bit instructions.  */
-       case 3 * MIPS_INSN16_SIZE:
-         /* No epilogue instructions in this category.  */
-         return 0;
-
        /* 32-bit instructions.  */
        case 2 * MIPS_INSN16_SIZE:
          insn <<= 16;
@@ -7118,12 +7093,11 @@ mips_breakpoint_from_pc (struct gdbarch *gdbarch,
          static gdb_byte micromips16_big_breakpoint[] = { 0x46, 0x85 };
          static gdb_byte micromips32_big_breakpoint[] = { 0, 0x5, 0, 0x7 };
          ULONGEST insn;
-         int status;
+         int err;
          int size;
 
-         insn = mips_fetch_instruction (gdbarch, ISA_MICROMIPS, pc, &status);
-         size = status ? 2
-                       : mips_insn_size (ISA_MICROMIPS, insn) == 2 ? 2 : 4;
+         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
@@ -7169,12 +7143,11 @@ mips_breakpoint_from_pc (struct gdbarch *gdbarch,
          static gdb_byte micromips16_little_breakpoint[] = { 0x85, 0x46 };
          static gdb_byte micromips32_little_breakpoint[] = { 0x5, 0, 0x7, 0 };
          ULONGEST insn;
-         int status;
+         int err;
          int size;
 
-         insn = mips_fetch_instruction (gdbarch, ISA_MICROMIPS, pc, &status);
-         size = status ? 2
-                       : mips_insn_size (ISA_MICROMIPS, insn) == 2 ? 2 : 4;
+         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
@@ -7374,12 +7347,14 @@ micromips_insn_at_pc_has_delay_slot (struct gdbarch *gdbarch,
 {
   ULONGEST insn;
   int status;
+  int size;
 
   insn = mips_fetch_instruction (gdbarch, ISA_MICROMIPS, addr, &status);
   if (status)
     return 0;
+  size = mips_insn_size (ISA_MICROMIPS, insn);
   insn <<= 16;
-  if (mips_insn_size (ISA_MICROMIPS, insn) == 2 * MIPS_INSN16_SIZE)
+  if (size == 2 * MIPS_INSN16_SIZE)
     {
       insn |= mips_fetch_instruction (gdbarch, ISA_MICROMIPS, addr, &status);
       if (status)
@@ -8024,9 +7999,7 @@ mips_stab_reg_to_regnum (struct gdbarch *gdbarch, int num)
   else if (mips_regnum (gdbarch)->dspacc != -1 && num >= 72 && num < 78)
     regnum = num + mips_regnum (gdbarch)->dspacc - 72;
   else
-    /* This will hopefully (eventually) provoke a warning.  Should
-       we be calling complaint() here?  */
-    return gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch);
+    return -1;
   return gdbarch_num_regs (gdbarch) + regnum;
 }
 
@@ -8049,9 +8022,7 @@ mips_dwarf_dwarf2_ecoff_reg_to_regnum (struct gdbarch *gdbarch, int num)
   else if (mips_regnum (gdbarch)->dspacc != -1 && num >= 66 && num < 72)
     regnum = num + mips_regnum (gdbarch)->dspacc - 66;
   else
-    /* This will hopefully (eventually) provoke a warning.  Should we
-       be calling complaint() here?  */
-    return gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch);
+    return -1;
   return gdbarch_num_regs (gdbarch) + regnum;
 }