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

diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c
index fdfb360f5cc1af5b0941c232720e3462be32ab01..599f785b3494929cd53343f60fcf3f80e5762dbf 100644 (file)
--- a/gdb/arm-tdep.c
+++ b/gdb/arm-tdep.c
@@ -1,6 +1,6 @@
 /* Common target dependent code for GDB on ARM systems.
 
-   Copyright (C) 1988-2018 Free Software Foundation, Inc.
+   Copyright (C) 1988-2019 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -55,7 +55,7 @@
 #include "coff/internal.h"
 #include "elf/arm.h"
 
-#include "vec.h"
+#include "common/vec.h"
 
 #include "record.h"
 #include "record-full.h"
@@ -70,7 +70,7 @@
 #include "features/arm/arm-with-neon.c"
 
 #if GDB_SELF_TEST
-#include "selftest.h"
+#include "common/selftest.h"
 #endif
 
 static int arm_debug;
@@ -1801,6 +1801,10 @@ arm_scan_prologue (struct frame_info *this_frame,
       CORE_ADDR frame_loc;
       ULONGEST return_value;
 
+      /* AAPCS does not use a frame register, so we can abort here.  */
+      if (gdbarch_tdep (gdbarch)->arm_abi == ARM_ABI_AAPCS)
+        return;
+
       frame_loc = get_frame_register_unsigned (this_frame, ARM_FP_REGNUM);
       if (!safe_read_memory_unsigned_integer (frame_loc, 4, byte_order,
                                              &return_value))
@@ -3055,38 +3059,6 @@ struct frame_base arm_normal_base = {
   arm_normal_frame_base
 };
 
-/* Assuming THIS_FRAME is a dummy, return the frame ID of that
-   dummy frame.  The frame ID's base needs to match the TOS value
-   saved by save_dummy_frame_tos() and returned from
-   arm_push_dummy_call, and the PC needs to match the dummy frame's
-   breakpoint.  */
-
-static struct frame_id
-arm_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame)
-{
-  return frame_id_build (get_frame_register_unsigned (this_frame,
-                                                     ARM_SP_REGNUM),
-                        get_frame_pc (this_frame));
-}
-
-/* Given THIS_FRAME, find the previous frame's resume PC (which will
-   be used to construct the previous frame's ID, after looking up the
-   containing function).  */
-
-static CORE_ADDR
-arm_unwind_pc (struct gdbarch *gdbarch, struct frame_info *this_frame)
-{
-  CORE_ADDR pc;
-  pc = frame_unwind_register_unsigned (this_frame, ARM_PC_REGNUM);
-  return arm_addr_bits_remove (gdbarch, pc);
-}
-
-static CORE_ADDR
-arm_unwind_sp (struct gdbarch *gdbarch, struct frame_info *this_frame)
-{
-  return frame_unwind_register_unsigned (this_frame, ARM_SP_REGNUM);
-}
-
 static struct value *
 arm_dwarf2_prev_register (struct frame_info *this_frame, void **this_cache,
                          int regnum)
@@ -3679,7 +3651,8 @@ arm_vfp_abi_for_function (struct gdbarch *gdbarch, struct type *func_type)
 static CORE_ADDR
 arm_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,
+                    struct value **args, CORE_ADDR sp,
+                    function_call_return_method return_method,
                     CORE_ADDR struct_addr)
 {
   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
@@ -3714,7 +3687,7 @@ arm_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
 
   /* The struct_return pointer occupies the first parameter
      passing register.  */
-  if (struct_return)
+  if (return_method == return_method_struct)
     {
       if (arm_debug)
        fprintf_unfiltered (gdb_stdlog, "struct return in %s = %s\n",
@@ -7460,9 +7433,9 @@ thumb_process_displaced_32bit_insn (struct gdbarch *gdbarch, uint16_t insn1,
        {
          if (bit (insn1, 9)) /* Data processing (plain binary imm).  */
            {
-             int op = bits (insn1, 4, 8);
+             int dp_op = bits (insn1, 4, 8);
              int rn = bits (insn1, 0, 3);
-             if ((op == 0 || op == 0xa) && rn == 0xf)
+             if ((dp_op == 0 || dp_op == 0xa) && rn == 0xf)
                err = thumb_copy_pc_relative_32bit (gdbarch, insn1, insn2,
                                                    regs, dsc);
              else
@@ -8955,7 +8928,6 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
          else if (ei_osabi == ELFOSABI_NONE || ei_osabi == ELFOSABI_GNU)
            {
              int eabi_ver = EF_ARM_EABI_VERSION (e_flags);
-             int attr_arch, attr_profile;
 
              switch (eabi_ver)
                {
@@ -9026,11 +8998,13 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
                 executable file includes build attributes; GCC does
                 copy them to the executable, but e.g. RealView does
                 not.  */
-             attr_arch = bfd_elf_get_obj_attr_int (info.abfd, OBJ_ATTR_PROC,
-                                                   Tag_CPU_arch);
-             attr_profile = bfd_elf_get_obj_attr_int (info.abfd,
-                                                      OBJ_ATTR_PROC,
-                                                      Tag_CPU_arch_profile);
+             int attr_arch
+               = bfd_elf_get_obj_attr_int (info.abfd, OBJ_ATTR_PROC,
+                                           Tag_CPU_arch);
+             int attr_profile
+               = bfd_elf_get_obj_attr_int (info.abfd, OBJ_ATTR_PROC,
+                                           Tag_CPU_arch_profile);
+
              /* GCC specifies the profile for v6-M; RealView only
                 specifies the profile for architectures starting with
                 V7 (as opposed to architectures with a tag
@@ -9045,8 +9019,6 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
 
          if (fp_model == ARM_FLOAT_AUTO)
            {
-             int e_flags = elf_elfheader (info.abfd)->e_flags;
-
              switch (e_flags & (EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT))
                {
                case 0:
@@ -9358,11 +9330,6 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
 
   set_gdbarch_write_pc (gdbarch, arm_write_pc);
 
-  /* Frame handling.  */
-  set_gdbarch_dummy_id (gdbarch, arm_dummy_id);
-  set_gdbarch_unwind_pc (gdbarch, arm_unwind_pc);
-  set_gdbarch_unwind_sp (gdbarch, arm_unwind_sp);
-
   frame_base_set_default (gdbarch, &arm_normal_base);
 
   /* Address manipulation.  */
@@ -10219,7 +10186,7 @@ arm_record_data_proc_misc_ld_str (insn_decode_record *arm_insn_r)
   uint32_t record_buf[8], record_buf_mem[8];
   ULONGEST u_regval[2] = {0};
 
-  uint32_t reg_src1 = 0, reg_dest = 0;
+  uint32_t reg_src1 = 0;
   uint32_t opcode1 = 0;
 
   arm_insn_r->opcode = bits (arm_insn_r->arm_insn, 21, 24);