228 lines
7.5 KiB
C
228 lines
7.5 KiB
C
/* Definitions for TI C6X assembler.
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Copyright (C) 2010-2015 Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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#define TC_TIC6X 1
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#define TARGET_BYTES_BIG_ENDIAN 0
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#define WORKING_DOT_WORD
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#define DOUBLEBAR_PARALLEL
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#define DWARF2_LINE_MIN_INSN_LENGTH 2
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#define MD_APPLY_SYM_VALUE(FIX) 0
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#define TC_PREDICATE_START_CHAR '['
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#define TC_PREDICATE_END_CHAR ']'
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/* For TI C6X, we keep spaces in what the preprocessor considers
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operands as they may separate functional unit specifiers from
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operands. */
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#define TC_KEEP_OPERAND_SPACES 1
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#define TARGET_ARCH bfd_arch_tic6x
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#define TARGET_FORMAT (target_big_endian \
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? "elf32-tic6x-be" \
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: "elf32-tic6x-le")
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typedef struct tic6x_label_list
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{
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struct tic6x_label_list *next;
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symbolS *label;
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} tic6x_label_list;
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/* Must be consistent with the enum in tc-tic6x.c. */
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#define TIC6X_NUM_UNWIND_REGS 13
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/* Unwinding information state. */
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typedef struct tic6x_unwind_info {
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int personality_index;
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symbolS *personality_routine;
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symbolS *function_start;
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segT saved_seg;
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subsegT saved_subseg;
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/* NULL if table entry is inline. */
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symbolS *table_entry;
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char *frag_start;
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valueT data;
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/* 0 before .cfi_startproc
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-1 between .cfi_startproc and .handlerdata
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>0 between .handlerdata and .endp */
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int data_bytes;
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offsetT reg_offset[TIC6X_NUM_UNWIND_REGS];
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bfd_boolean reg_saved[TIC6X_NUM_UNWIND_REGS];
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int cfa_reg;
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int return_reg;
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unsigned safe_mask;
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unsigned compact_mask;
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unsigned reg_saved_mask;
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offsetT cfa_offset;
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bfd_boolean pop_rts;
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/* Only valid for UNWIND_OP_POP_REG */
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int saved_reg_count;
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} tic6x_unwind_info;
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typedef struct
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{
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/* Any labels seen since the last instruction or data. If not NULL,
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a following instruction may not have parallel bars, but must
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start a new execute packet. */
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tic6x_label_list *label_list;
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/* Whether compact instructions are forbidden here. */
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bfd_boolean nocmp;
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/* If there is a current execute packet, the frag being used for
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that execute packet. */
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fragS *execute_packet_frag;
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/* If there is a current execute packet, a pointer to the
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least-significant byte of the last instruction in it (for setting
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the p-bit). */
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char *last_insn_lsb;
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/* If there has been an SPMASK instruction in the current execute
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packet, a pointer to the first byte in it (for processing
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||^); otherwise NULL. */
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char *spmask_addr;
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/* The functional units used in the current execute packet, recorded
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by setting the same bits as would be set in the 32-bit SPMASK
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instruction. */
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unsigned int func_units_used;
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/* If an SPLOOP-family instruction has been seen, and a following
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SPKERNEL-family instruction has not yet been seen, the ii value
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from the SPLOOP instruction (in the range 1 to 14); otherwise
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0. */
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int sploop_ii;
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/* Bit N indicates that an R_C6000_NONE relocation has been output for
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__c6xabi_unwind_cpp_prN already if set. This enables dependencies to be
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emitted only once per section, to save unnecessary bloat. */
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unsigned int marked_pr_dependency;
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tic6x_unwind_info *unwind;
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tic6x_unwind_info *text_unwind;
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} tic6x_segment_info_type;
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#define TC_SEGMENT_INFO_TYPE tic6x_segment_info_type
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typedef struct
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{
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/* Whether this machine-dependent frag is used for instructions (as
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opposed to code alignment). */
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bfd_boolean is_insns;
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/* For a frag used for instructions, whether it is may cross a fetch
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packet boundary (subject to alignment requirements). */
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bfd_boolean can_cross_fp_boundary;
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} tic6x_frag_info;
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#define TC_FRAG_TYPE tic6x_frag_info
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#define TC_FRAG_INIT(fragP) tic6x_frag_init (fragP)
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extern void tic6x_frag_init (fragS *fragp);
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typedef struct
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{
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/* Whether this fix was for an ADDA instruction. If so, a constant
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resulting from resolving the fix should be implicitly shifted
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left (it represents a value to be encoded literally in the
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instruction, whereas a non-constant represents a DP-relative
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value counting in the appropriate units). */
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bfd_boolean fix_adda;
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/* The symbol to be subtracted in case of a PCR_H16 or PCR_L16
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reloc. */
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symbolS *fix_subsy;
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} tic6x_fix_info;
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#define TC_FIX_TYPE tic6x_fix_info
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#define TC_INIT_FIX_DATA(fixP) tic6x_init_fix_data (fixP)
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struct fix;
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extern void tic6x_init_fix_data (struct fix *fixP);
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#define md_after_parse_args() tic6x_after_parse_args ()
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extern void tic6x_after_parse_args (void);
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#define md_cleanup() tic6x_cleanup ()
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extern void tic6x_cleanup (void);
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#define md_cons_align(n) tic6x_cons_align (n)
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extern void tic6x_cons_align (int n);
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#define md_do_align(n, fill, len, max, label) \
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do { \
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if (tic6x_do_align (n, fill, len, max)) \
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goto label; \
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} while (0)
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extern bfd_boolean tic6x_do_align (int n, char *fill, int len, int max);
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#define CONVERT_SYMBOLIC_ATTRIBUTE(name) \
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tic6x_convert_symbolic_attribute (name)
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extern int tic6x_convert_symbolic_attribute (const char *);
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#define md_end() tic6x_end ();
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extern void tic6x_end (void);
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#define md_parse_name(name, exprP, mode, nextcharP) \
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tic6x_parse_name (name, exprP, mode, nextcharP)
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extern int tic6x_parse_name (const char *name, expressionS *exprP,
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enum expr_mode mode, char *nextchar);
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#define MD_PCREL_FROM_SECTION(FIX, SEC) tic6x_pcrel_from_section (FIX, SEC)
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extern long tic6x_pcrel_from_section (struct fix *fixp, segT sec);
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#define md_start_line_hook() tic6x_start_line_hook ()
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extern void tic6x_start_line_hook (void);
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#define TC_CONS_FIX_NEW(frag, where, size, exp, reloc) \
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tic6x_cons_fix_new (frag, where, size, exp, reloc)
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extern void tic6x_cons_fix_new (fragS *, int, int, expressionS *,
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bfd_reloc_code_real_type);
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#define tc_fix_adjustable(FIX) tic6x_fix_adjustable (FIX)
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extern bfd_boolean tic6x_fix_adjustable (struct fix *);
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#define tc_frob_label(sym) tic6x_frob_label (sym)
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extern void tic6x_frob_label (symbolS *sym);
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#define tc_init_after_args() tic6x_init_after_args ()
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extern void tic6x_init_after_args (void);
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#define tc_unrecognized_line(c) tic6x_unrecognized_line (c)
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extern int tic6x_unrecognized_line (int c);
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/* We want .cfi_* pseudo-ops for generating unwind info. */
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#define TARGET_USE_CFIPOP 1
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/* CFI hooks. */
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#define tc_regname_to_dw2regnum tic6x_regname_to_dw2regnum
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int tic6x_regname_to_dw2regnum (char *regname);
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#define tc_cfi_frame_initial_instructions tic6x_frame_initial_instructions
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void tic6x_frame_initial_instructions (void);
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/* The return register is B3. */
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#define DWARF2_DEFAULT_RETURN_COLUMN (16 + 3)
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/* Registers are generally saved at negative offsets to the CFA. */
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#define DWARF2_CIE_DATA_ALIGNMENT (-4)
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#define tc_cfi_startproc tic6x_cfi_startproc
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void tic6x_cfi_startproc (void);
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#define tc_cfi_endproc tic6x_cfi_endproc
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struct fde_entry;
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void tic6x_cfi_endproc (struct fde_entry *fde);
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#define tc_cfi_section_name ".c6xabi.exidx"
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