diff options
| -rw-r--r-- | gcc/config/svr4.h | 75 |
1 files changed, 63 insertions, 12 deletions
diff --git a/gcc/config/svr4.h b/gcc/config/svr4.h index 77328f13..e7e32d9 100644 --- a/gcc/config/svr4.h +++ b/gcc/config/svr4.h @@ -39,12 +39,6 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. appropriate define for the type of hardware that you are targeting. */ -/* Define a symbol so that libgcc* can know what sort of operating - environment and assembler syntax we are targeting for. */ -#ifndef SVR4 -#define SVR4 -#endif - /* For the sake of libgcc2.c, indicate target supports atexit. */ #define HAVE_ATEXIT @@ -269,8 +263,11 @@ do { \ /* This is how to allocate empty space in some section. The .zero pseudo-op is used for this on most svr4 assemblers. */ +#define SKIP_ASM_OP ".zero" + #undef ASM_OUTPUT_SKIP -#define ASM_OUTPUT_SKIP(FILE,SIZE) fprintf (FILE, "\t.zero\t%u\n", (SIZE)) +#define ASM_OUTPUT_SKIP(FILE,SIZE) \ + fprintf (FILE, "\t%s\t%u\n", SKIP_ASM_OP, (SIZE)) /* This is how to output a reference to a user-level label named NAME. `assemble_name' uses this. @@ -281,6 +278,46 @@ do { \ #undef ASM_OUTPUT_LABELREF #define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "%s", NAME) +/* This is how to output an internal numbered label where + PREFIX is the class of label and NUM is the number within the class. + + If the NUM argument is negative, we don't use it when generating the + label. + + For most svr4 systems, the convention is that any symbol which begins + with a period is not put into the linker symbol table by the assembler. +*/ + +#undef ASM_OUTPUT_INTERNAL_LABEL +#define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \ +do { \ + if ((int) (NUM) >= 0) \ ??? + fprintf (FILE, ".%s%d:\n", PREFIX, NUM); \ + else \ + fprintf (FILE, ".%s:\n", PREFIX); \ +} while (0) + +/* This is how to store into the string LABEL + the symbol_ref name of an internal numbered label where + PREFIX is the class of label and NUM is the number within the class. + This is suitable for output with `assemble_name'. + + If the NUM argument is negative, we don't use it when generating the + label. + + For most svr4 systems, the convention is that any symbol which begins + with a period is not put into the linker symbol table by the assembler. +*/ + +#undef ASM_GENERATE_INTERNAL_LABEL +#define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \ +do { \ + if ((int) (NUM) >= 0) \ + sprintf (LABEL, "*.%s%d", PREFIX, NUM); \ + else \ + sprintf (LABEL, "*.%s", PREFIX); \ +} while (0) + /* The standard SVR4 assembler seems to require that certain builtin library routines (e.g. .udiv) be explicitly declared as .globl in each assembly file where they are referenced. */ @@ -293,10 +330,12 @@ do { \ the linker seems to want the alignment of data objects to depend on their types. We do exactly that here. */ +#define COMMON_ASM_OP ".comm" + #undef ASM_OUTPUT_ALIGNED_COMMON #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \ do { \ - fputs ("\t.comm\t", (FILE)); \ + fprintf ((FILE), "\t%s\t", COMMON_ASM_OP); \ assemble_name ((FILE), (NAME)); \ fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \ } while (0) @@ -391,7 +430,7 @@ ctors_section () \ { \ if (in_section != in_ctors) \ { \ - fprintf (asm_out_file, CTORS_SECTION_ASM_OP); \ + fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \ in_section = in_ctors; \ } \ } @@ -402,7 +441,7 @@ dtors_section () \ { \ if (in_section != in_dtors) \ { \ - fprintf (asm_out_file, DTORS_SECTION_ASM_OP); \ + fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \ in_section = in_dtors; \ } \ } @@ -479,11 +518,22 @@ dtors_section () \ #define TYPE_OPERAND_FMT "@%s" +/* Write the extra assembler code needed to declare a function's result. + Most svr4 assemblers don't require any special declaration of the + result value, but there are exceptions. */ + +#ifndef ASM_DECLARE_RESULT +#define ASM_DECLARE_RESULT(FILE, RESULT) +#endif + /* These macros generate the special .type and .size directives which are used to set the corresponding fields of the linker symbol table - entries in an ELF object file under SVR4. */ + entries in an ELF object file under SVR4. These macros also output + the starting labels for the relevant functions/objects. */ -/* Write the extra assembler code needed to declare a function properly. */ +/* Write the extra assembler code needed to declare a function properly. + Some svr4 assemblers need to also have something extra said about the + function's return value. We allow for that here. */ #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ do { \ @@ -492,6 +542,7 @@ dtors_section () \ putc (',', FILE); \ fprintf (FILE, TYPE_OPERAND_FMT, "function"); \ putc ('\n', FILE); \ + ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \ ASM_OUTPUT_LABEL(FILE, NAME); \ } while (0) |