/* m68kelf support, derived from m68kv4.h */
/* Target definitions for GNU compiler for mc680x0 running System V.4
- Copyright (C) 1991, 1993, 2000, 2002, 2003, 2004
- Free Software Foundation, Inc.
+ Copyright (C) 1991-2024 Free Software Foundation, Inc.
Written by Ron Guilmette (rfg@netcom.com) and Fred Fish (fnf@cygnus.com).
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#ifndef SWBEG_ASM_OP
#define SWBEG_ASM_OP "\t.swbeg\t"
#endif
-/* Here are four prefixes that are used by asm_fprintf to
+/* Here are three prefixes that are used by asm_fprintf to
facilitate customization for alternate assembler syntaxes.
Machines with no likelihood of an alternate syntax need not
define these and need not use asm_fprintf. */
#undef USER_LABEL_PREFIX
#define USER_LABEL_PREFIX ""
-/* The prefix for immediate operands. */
-
-#undef IMMEDIATE_PREFIX
-#define IMMEDIATE_PREFIX "#"
-
-/* In the machine description we can't use %R, because it will not be seen
- by ASM_FPRINTF. (Isn't that a design bug?). */
-
-#undef REGISTER_PREFIX_MD
-#define REGISTER_PREFIX_MD "%%"
-
/* config/m68k.md has an explicit reference to the program counter,
prefix this by the register prefix. */
{ \
if (ADDRESS_REG_P (operands[0])) \
return "jmp %%pc@(2,%0:l)"; \
+ else if (TARGET_LONG_JUMP_TABLE_OFFSETS) \
+ return "jmp %%pc@(%l1,%0:l)"; \
else \
return "ext%.l %0\n\tjmp %%pc@(2,%0:l)"; \
} \
+ else if (TARGET_LONG_JUMP_TABLE_OFFSETS) \
+ return "jmp %%pc@(%l1,%0:l)"; \
else \
return "jmp %%pc@(2,%0:w)"; \
} while (0)
fprintf ((FILE), "%s%u\n", ALIGN_ASM_OP, 1 << (LOG)); \
} while (0)
-/* Use proper assembler syntax for these macros. */
-#undef ASM_OUTPUT_REG_PUSH
-#define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \
- asm_fprintf (FILE, "\t%Omove.l %s,-(%Rsp)\n", reg_names[REGNO])
-
-#undef ASM_OUTPUT_REG_POP
-#define ASM_OUTPUT_REG_POP(FILE,REGNO) \
- asm_fprintf (FILE, "\t%Omove.l (%Rsp)+,%s\n", reg_names[REGNO])
-
-/* Override the definition of NO_DOLLAR_IN_LABEL in svr4.h, for special
- g++ assembler names. When this is defined, g++ uses embedded '.'
- characters and some m68k assemblers have problems with this. The
- chances are much greater that any particular assembler will permit
- embedded '$' characters. */
-
-#undef NO_DOLLAR_IN_LABEL
-
-/* Define PCC_STATIC_STRUCT_RETURN if the convention on the target machine
- is to use the nonreentrant technique for returning structure and union
- values, as commonly implemented by the AT&T Portable C Compiler (PCC).
- When defined, the gcc option -fpcc-struct-return can be used to cause
- this form to be generated. When undefined, the option does nothing.
- For m68k SVR4, the convention is to use a reentrant technique compatible
- with the gcc default, so override the definition of this macro in m68k.h */
-
-#undef PCC_STATIC_STRUCT_RETURN
-
-/* Local common symbols are declared to the assembler with ".lcomm" rather
- than ".bss", so override the definition in svr4.h */
-
-#undef BSS_ASM_OP
-#define BSS_ASM_OP "\t.lcomm\t"
-
/* Register in which address to store a structure value is passed to a
function. The default in m68k.h is a1. For m68k/SVR4 it is a0. */
#undef M68K_STRUCT_VALUE_REGNUM
-#define M68K_STRUCT_VALUE_REGNUM 8
+#define M68K_STRUCT_VALUE_REGNUM A0_REG
+
+/* The static chain regnum defaults to a0, but we use that for
+ structure return, so have to use a1 for the static chain. */
+
+#undef STATIC_CHAIN_REGNUM
+#define STATIC_CHAIN_REGNUM A1_REG
+#undef M68K_STATIC_CHAIN_REG_NAME
+#define M68K_STATIC_CHAIN_REG_NAME REGISTER_PREFIX "a1"
#define ASM_COMMENT_START "|"
/* Define how the m68k registers should be numbered for Dwarf output.
The numbering provided here should be compatible with the native
- SVR4 SDB debugger in the m68k/SVR4 reference port, where d0-d7
+ SVR4 debugger in the m68k/SVR4 reference port, where d0-d7
are 0-7, a0-a8 are 8-15, and fp0-fp7 are 16-23. */
-#undef DBX_REGISTER_NUMBER
-#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
-
-/* The ASM_OUTPUT_SKIP macro is first defined in m68k.h, using ".skip".
- It is then overridden by m68k/sgs.h to use ".space", and again by svr4.h
- to use ".zero". The m68k/SVR4 assembler uses ".space", so repeat the
- definition from m68k/sgs.h here. Note that ASM_NO_SKIP_IN_TEXT is
- defined in m68k/sgs.h, so we don't have to repeat it here. */
-
-#undef ASM_OUTPUT_SKIP
-#define ASM_OUTPUT_SKIP(FILE,SIZE) \
- fprintf (FILE, "%s%u\n", SPACE_ASM_OP, (int)(SIZE))
+#undef DEBUGGER_REGNO
+#define DEBUGGER_REGNO(REGNO) (REGNO)
#if 0
/* SVR4 m68k assembler is bitching on the `comm i,1,1' which askes for
#undef ASM_OUTPUT_ALIGNED_LOCAL
#endif
-/* The `string' directive on m68k svr4 does not handle string with
- escape char (i.e., `\') right. Use normal way to output ASCII bytes
- seems to be safer. */
-#undef ASM_OUTPUT_ASCII
-#define ASM_OUTPUT_ASCII(FILE,PTR,LEN) \
-do { \
- register int sp = 0, ch; \
- fputs (integer_asm_op (1, TRUE), (FILE)); \
- do { \
- ch = (PTR)[sp]; \
- if (ch > ' ' && ! (ch & 0x80) && ch != '\\') \
- { \
- fprintf ((FILE), "'%c", ch); \
- } \
- else \
- { \
- fprintf ((FILE), "0x%x", ch); \
- } \
- if (++sp < (LEN)) \
- { \
- if ((sp % 10) == 0) \
- { \
- fprintf ((FILE), "\n%s", integer_asm_op (1, TRUE)); \
- } \
- else \
- { \
- putc (',', (FILE)); \
- } \
- } \
- } while (sp < (LEN)); \
- putc ('\n', (FILE)); \
-} while (0)
-
#undef ASM_OUTPUT_COMMON
#undef ASM_OUTPUT_LOCAL
#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
#define JUMP_TABLES_IN_TEXT_SECTION 1
-/* Override the definition in svr4.h. In m68k svr4, using swbeg is the
- standard way to do switch table. */
+/* In m68k svr4, using swbeg is the standard way to do switch
+ table. */
#undef ASM_OUTPUT_BEFORE_CASE_LABEL
#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \
- fprintf ((FILE), "%s&%d\n", SWBEG_ASM_OP, XVECLEN (PATTERN (TABLE), 1));
+ fprintf ((FILE), "%s&%d\n", SWBEG_ASM_OP, XVECLEN (PATTERN (TABLE), 1))
/* end of stuff from m68kv4.h */
#undef ENDFILE_SPEC
#undef STARTFILE_SPEC
#define STARTFILE_SPEC "crtbegin.o%s"
-/* If defined, a C expression whose value is a string containing the
- assembler operation to identify the following data as
- uninitialized global data. If not defined, and neither
- `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
- uninitialized global data will be output in the data section if
- `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
- used. */
#ifndef BSS_SECTION_ASM_OP
#define BSS_SECTION_ASM_OP "\t.section\t.bss"
#endif
-/* Like `ASM_OUTPUT_BSS' except takes the required alignment as a
- separate, explicit argument. If you define this macro, it is used
- in place of `ASM_OUTPUT_BSS', and gives you more flexibility in
- handling the required alignment of the variable. The alignment is
- specified as the number of bits.
-
- Try to use function `asm_output_aligned_bss' defined in file
- `varasm.c' when defining this macro. */
#ifndef ASM_OUTPUT_ALIGNED_BSS
#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
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