[binutils, ARM, 9/16] New BFL instruction for Armv8.1-M Mainline

[external/binutils.git] / gas / config / tc-arm.c

diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 177d90f..5643e3f 100644 (file)
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -10507,6 +10507,7 @@ encode_thumb32_addr_mode (int i, bfd_boolean is_t, bfd_boolean is_d)
   X(_bcond, d000, f0008000),                   \
   X(_bf,    0000, f040e001),                   \
   X(_bfx,   0000, f060e001),                   \
+  X(_bfl,   0000, f000c001),                   \
   X(_bflx,  0000, f070e001),                   \
   X(_bic,   4380, ea200000),                   \
   X(_bics,  4380, ea300000),                   \
@@ -13364,6 +13365,25 @@ do_t_branch_future (void)
          }
        break;
 
+      case T_MNEM_bfl:
+       if (inst.operands[1].hasreloc == 0)
+         {
+           int val = inst.operands[1].imm;
+           if (v8_1_branch_value_check (inst.operands[1].imm, 19, TRUE) == FAIL)
+             as_bad (BAD_BRANCH_OFF);
+
+           int immA = (val & 0x0007f000) >> 12;
+           int immB = (val & 0x00000ffc) >> 2;
+           int immC = (val & 0x00000002) >> 1;
+           inst.instruction |= (immA << 16) | (immB << 1) | (immC << 11);
+         }
+         else
+         {
+           inst.relocs[1].type = BFD_RELOC_ARM_THUMB_BF19;
+           inst.relocs[1].pc_rel = 1;
+         }
+       break;
+
       case T_MNEM_bfx:
       case T_MNEM_bflx:
        inst.instruction |= inst.operands[1].reg << 16;
@@ -21687,6 +21707,7 @@ static const struct asm_opcode insns[] =
 #define THUMB_VARIANT & arm_ext_v8_1m_main
  toC("bf",     _bf,    2, (EXPs, EXPs),             t_branch_future),
  toC("bfx",    _bfx,   2, (EXPs, RRnpcsp),          t_branch_future),
+ toC("bfl",    _bfl,   2, (EXPs, EXPs),             t_branch_future),
  toC("bflx",   _bflx,  2, (EXPs, RRnpcsp),          t_branch_future),
 };
 #undef ARM_VARIANT