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* config/tc-m68hc11.c (M6811_OP_CALL_ADDR): New internal define.
(M6811_OP_PAGE_ADDR): New internal define. (get_operand): New modifier %page and %addr to obtain page and address part of a far-function. (fixup8): Use BFD_RELOC_M68HC11_PAGE for a %page modifier; don't complain on overflow for the BFD_RELOC_M68HC11_PAGE and truncation relocs. (fixup16): Use BFD_RELOC_M68HC11_LO16 for a %addr modifier. (find_opcode): Add comment. (md_estimate_size_before_relax): Force relocation of STATE_UNDEXED_OFFSET types when the symbol is not absolute. (tc_m68hc11_fix_adjustable): Check for BFD_RELOC_M68HC11_LO16 instead of BFD_RELOC_LO16; temporarily make the BFD_RELOC_32 on the symbol itself so that DWARF2 strings are merged correctly.
This commit is contained in:
Stephane Carrez
parent
6eb79af08f
commit
577300cea4
@ -1,3 +1,20 @@
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2003-04-05 Stephane Carrez <stcarrez@nerim.fr>
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* config/tc-m68hc11.c (M6811_OP_CALL_ADDR): New internal define.
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(M6811_OP_PAGE_ADDR): New internal define.
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(get_operand): New modifier %page and %addr to obtain page and
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address part of a far-function.
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(fixup8): Use BFD_RELOC_M68HC11_PAGE for a %page modifier; don't
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complain on overflow for the BFD_RELOC_M68HC11_PAGE and truncation
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relocs.
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(fixup16): Use BFD_RELOC_M68HC11_LO16 for a %addr modifier.
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(find_opcode): Add comment.
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(md_estimate_size_before_relax): Force relocation of
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STATE_UNDEXED_OFFSET types when the symbol is not absolute.
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(tc_m68hc11_fix_adjustable): Check for BFD_RELOC_M68HC11_LO16
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instead of BFD_RELOC_LO16; temporarily make the BFD_RELOC_32
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on the symbol itself so that DWARF2 strings are merged correctly.
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2003-04-04 Svein E. Seldal <Svein.Seldal@solidas.com>
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* config/obj-coff.h (TARGET_FORMAT): Namespace cleanup, changed
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@ -989,6 +989,8 @@ register_name ()
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return reg_number;
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}
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#define M6811_OP_CALL_ADDR 0x00800000
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#define M6811_OP_PAGE_ADDR 0x04000000
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/* Parse a string of operands and return an array of expressions.
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@ -1054,6 +1056,24 @@ get_operand (oper, which, opmode)
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p += 3;
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mode |= M6811_OP_LOW_ADDR;
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}
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/* %page modifier is used to obtain only the page number
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of the address of a function. */
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else if (strncmp (p, "%page", 5) == 0)
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{
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p += 5;
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mode |= M6811_OP_PAGE_ADDR;
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}
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/* %addr modifier is used to obtain the physical address part
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of the function (16-bit). For 68HC12 the function will be
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mapped in the 16K window at 0x8000 and the value will be
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within that window (although the function address may not fit
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in 16-bit). See bfd/elf32-m68hc12.c for the translation. */
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else if (strncmp (p, "%addr", 5) == 0)
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{
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p += 5;
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mode |= M6811_OP_CALL_ADDR;
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}
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}
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else if (*p == '.' && (p[1] == '+' || p[1] == '-'))
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{
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@ -1086,6 +1106,12 @@ get_operand (oper, which, opmode)
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as_bad (_("Spurious `,' or bad indirect register addressing mode."));
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return -1;
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}
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/* Handle 68HC12 page specification in 'call foo,%page(bar)'. */
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else if ((opmode & M6812_OP_PAGE) && strncmp (p, "%page", 5) == 0)
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{
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p += 5;
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mode = M6811_OP_PAGE_ADDR | M6812_OP_PAGE | M6811_OP_IND16;
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}
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input_line_pointer = p;
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if (mode == M6811_OP_NONE || mode == M6812_OP_D_IDX)
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@ -1422,16 +1448,24 @@ fixup8 (oper, mode, opmode)
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}
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else
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{
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/* Now create an 8-bit fixup. If there was some %hi or %lo
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modifier, generate the reloc accordingly. */
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fix_new_exp (frag_now, f - frag_now->fr_literal, 1,
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oper, FALSE,
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((opmode & M6811_OP_HIGH_ADDR)
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? BFD_RELOC_M68HC11_HI8
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: ((opmode & M6811_OP_LOW_ADDR)
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? BFD_RELOC_M68HC11_LO8
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: ((mode & M6812_OP_PAGE)
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? BFD_RELOC_M68HC11_PAGE : BFD_RELOC_8))));
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fixS *fixp;
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int reloc;
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/* Now create an 8-bit fixup. If there was some %hi, %lo
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or %page modifier, generate the reloc accordingly. */
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if (opmode & M6811_OP_HIGH_ADDR)
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reloc = BFD_RELOC_M68HC11_HI8;
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else if (opmode & M6811_OP_LOW_ADDR)
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reloc = BFD_RELOC_M68HC11_LO8;
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else if (opmode & M6811_OP_PAGE_ADDR)
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reloc = BFD_RELOC_M68HC11_PAGE;
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else
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reloc = BFD_RELOC_8;
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fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 1,
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oper, FALSE, reloc);
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if (reloc != BFD_RELOC_8)
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fixp->fx_no_overflow = 1;
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}
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number_to_chars_bigendian (f, 0, 1);
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}
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@ -1465,18 +1499,27 @@ fixup16 (oper, mode, opmode)
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else if (oper->X_op != O_register)
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{
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fixS *fixp;
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int reloc;
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if ((opmode & M6811_OP_CALL_ADDR) && (mode & M6811_OP_IMM16))
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reloc = BFD_RELOC_M68HC11_LO16;
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else if (mode & M6812_OP_JUMP_REL16)
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reloc = BFD_RELOC_16_PCREL;
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else if (mode & M6812_OP_PAGE)
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reloc = BFD_RELOC_M68HC11_LO16;
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else
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reloc = BFD_RELOC_16;
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/* Now create a 16-bit fixup. */
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fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 2,
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oper,
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(mode & M6812_OP_JUMP_REL16 ? TRUE : FALSE),
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(mode & M6812_OP_JUMP_REL16
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? BFD_RELOC_16_PCREL
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: (mode & M6812_OP_PAGE)
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? BFD_RELOC_M68HC11_LO16 : BFD_RELOC_16));
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reloc == BFD_RELOC_16_PCREL,
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reloc);
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number_to_chars_bigendian (f, 0, 2);
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if (mode & M6812_OP_JUMP_REL16)
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if (reloc == BFD_RELOC_16_PCREL)
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fixp->fx_pcrel_adjust = 2;
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if (reloc == BFD_RELOC_M68HC11_LO16)
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fixp->fx_no_overflow = 1;
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}
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else
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{
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@ -2405,6 +2448,11 @@ find_opcode (opc, operands, nb_operands)
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if (i >= opc->min_operands)
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{
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opcode = find (opc, operands, i);
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/* Another special case for 'call foo,page' instructions.
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Since we support 'call foo' and 'call foo,page' we must look
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if the optional page specification is present otherwise we will
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assemble immediately and treat the page spec as garbage. */
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if (opcode && !(opcode->format & M6812_OP_PAGE))
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return opcode;
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@ -2996,7 +3044,9 @@ md_estimate_size_before_relax (fragP, segment)
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if (RELAX_LENGTH (fragP->fr_subtype) == STATE_UNDF)
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{
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if (S_GET_SEGMENT (fragP->fr_symbol) != segment
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|| !relaxable_symbol (fragP->fr_symbol))
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|| !relaxable_symbol (fragP->fr_symbol)
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|| (segment != absolute_section
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&& RELAX_STATE (fragP->fr_subtype) == STATE_INDEXED_OFFSET))
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{
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/* Non-relaxable cases. */
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int old_fr_fix;
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@ -3211,15 +3261,15 @@ tc_m68hc11_fix_adjustable (fixP)
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case BFD_RELOC_M68HC11_RL_GROUP:
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case BFD_RELOC_VTABLE_INHERIT:
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case BFD_RELOC_VTABLE_ENTRY:
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case BFD_RELOC_32:
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/* The memory bank addressing translation also needs the original
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symbol. */
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case BFD_RELOC_LO16:
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case BFD_RELOC_M68HC11_LO16:
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case BFD_RELOC_M68HC11_PAGE:
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case BFD_RELOC_M68HC11_24:
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return 0;
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case BFD_RELOC_32:
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default:
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return 1;
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}
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