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iris6.h (TARGET_IRIX6): New. 

* config/mips/iris6.h (TARGET_IRIX6): New.
        (current_section_name, current_section_flags): New.
        (ASM_OUTPUT_ALIGN, ASM_FILE_START, ASM_FILE_END): New.
        (MAX_OFILE_ALIGNMENT): New.
        (ASM_OUTPUT_ALIGNED_LOCAL): Use bss_section.
        * config/mips/mips.c (mips_make_temp_file, temp_filename): Remove.
        (copy_file_data): Split out from
        (mips_asm_file_end): ... here.
        (mips_asm_file_start): Remove extra .section directive.  Use
        tmpfile instead of mips_make_temp_file.
        (mips_unique_section): Use const char * as needed for warnings.
        (iris6_asm_named_section_1): Renamed from iris6_asm_named_section;
        re-add align parameter.
        (iris6_asm_named_section): New.
        (iris_section_align_entry_eq, iris_section_align_entry_hash): New.
        (iris6_asm_output_align, iris6_section_align_1): New.
        (iris6_asm_file_start, iris6_asm_file_end): New.
        * config/mips/mips-protos.h: Update decls.

From-SVN: r44991
This commit is contained in:
Richard Henderson 2001-08-17 17:25:09 -07:00 committed by Richard Henderson
parent 5cc3b0c784
commit 920ae24b35
4 changed files with 281 additions and 88 deletions
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21
gcc/ChangeLog
View File

@ -1,3 +1,24 @@
2001-08-17 Richard Henderson <rth@redhat.com>
* config/mips/iris6.h (TARGET_IRIX6): New.
(current_section_name, current_section_flags): New.
(ASM_OUTPUT_ALIGN, ASM_FILE_START, ASM_FILE_END): New.
(MAX_OFILE_ALIGNMENT): New.
(ASM_OUTPUT_ALIGNED_LOCAL): Use bss_section.
* config/mips/mips.c (mips_make_temp_file, temp_filename): Remove.
(copy_file_data): Split out from
(mips_asm_file_end): ... here.
(mips_asm_file_start): Remove extra .section directive. Use
tmpfile instead of mips_make_temp_file.
(mips_unique_section): Use const char * as needed for warnings.
(iris6_asm_named_section_1): Renamed from iris6_asm_named_section;
re-add align parameter.
(iris6_asm_named_section): New.
(iris_section_align_entry_eq, iris_section_align_entry_hash): New.
(iris6_asm_output_align, iris6_section_align_1): New.
(iris6_asm_file_start, iris6_asm_file_end): New.
* config/mips/mips-protos.h: Update decls.
2001-08-17 Janis Johnson <janis187@us.ibm.com>
* doc/install.texi (Install GCC): Add links to build status pages.

59
gcc/config/mips/iris6.h
View File

@ -18,6 +18,9 @@ along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Let mips.c know we need the Irix6 functions. */
#define TARGET_IRIX6 1
/* Default to -mabi=n32 and -mips3. */
#define MIPS_ISA_DEFAULT 3
#define MIPS_ABI_DEFAULT ABI_N32
@ -31,7 +34,7 @@ Boston, MA 02111-1307, USA. */
#include "mips/abi64.h"
/* Irix6 assembler does handle DWARF2 directives. Override setting in
irix5.h file. */
irix5.h file. */
#undef DWARF2_UNWIND_INFO
/* The Irix6 assembler will sometimes assign labels to the wrong
@ -130,6 +133,7 @@ Boston, MA 02111-1307, USA. */
/* Force the generation of dwarf .debug_frame sections even if not
compiling -g. This guarantees that we can unwind the stack. */
#define DWARF2_FRAME_INFO 1
/* The size in bytes of a DWARF field indicating an offset or length
relative to a debug info section, specified to be 4 bytes in the DWARF-2
specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */
@ -289,13 +293,61 @@ rdata_section () \
fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP_32); \
in_section = in_rdata; \
} \
} \
\
const char * \
current_section_name () \
{ \
switch (in_section) \
{ \
case no_section: return NULL; \
case in_text: return ".text"; \
case in_data: return ".data"; \
case in_sdata: return ".sdata"; \
case in_bss: return ".bss"; \
case in_rdata: \
case in_const: \
if (mips_abi != ABI_32 && mips_abi != ABI_O64) \
return ".rodata"; \
else \
return ".rdata"; \
case in_named: \
return in_named_name; \
} \
abort (); \
} \
\
unsigned int \
current_section_flags () \
{ \
switch (in_section) \
{ \
case no_section: return 0; \
case in_text: return SECTION_CODE; \
case in_data: return SECTION_WRITE; \
case in_sdata: return SECTION_WRITE | SECTION_SMALL; \
case in_bss: return SECTION_WRITE | SECTION_BSS; \
case in_rdata: \
case in_const: return 0; \
case in_named: return get_named_section_flags (in_named_name); \
} \
abort (); \
}
/* Switch into a generic section. */
#undef TARGET_ASM_NAMED_SECTION
#define TARGET_ASM_NAMED_SECTION iris6_asm_named_section
/* ??? Perhaps just include svr4.h in this file? */
/* SGI assembler needs all sorts of extra help to do alignment properly. */
#undef ASM_OUTPUT_ALIGN
#define ASM_OUTPUT_ALIGN iris6_asm_output_align
#undef ASM_FILE_START
#define ASM_FILE_START iris6_asm_file_start
#undef ASM_FILE_END
#define ASM_FILE_END iris6_asm_file_end
#undef MAX_OFILE_ALIGNMENT
#define MAX_OFILE_ALIGNMENT (32768*8)
/* ??? SGI assembler may core dump when compiling with -g.
Sometimes as succeeds, but then we get a linker error. (cmds.c in 072.sc)
@ -317,11 +369,10 @@ do \
{ \
if (mips_abi != ABI_32 && mips_abi != ABI_O64) \
{ \
fprintf (STREAM, "%s\n", BSS_SECTION_ASM_OP); \
bss_section (); \
mips_declare_object (STREAM, NAME, "", ":\n", 0); \
ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT)); \
ASM_OUTPUT_SKIP (STREAM, SIZE); \
fprintf (STREAM, "%s\n", POPSECTION_ASM_OP); \
} \
else \
mips_declare_object (STREAM, NAME, "\n\t.lcomm\t", ",%u\n", (SIZE)); \

5
gcc/config/mips/mips-protos.h
View File

@ -29,6 +29,11 @@ Boston, MA 02111-1307, USA. */
extern HOST_WIDE_INT compute_frame_size PARAMS ((HOST_WIDE_INT));
extern void mips_asm_file_end PARAMS ((FILE *));
extern void mips_asm_file_start PARAMS ((FILE *));
extern void iris6_asm_file_start PARAMS ((FILE *));
extern void iris6_asm_file_end PARAMS ((FILE *));
extern void iris6_asm_output_align PARAMS ((FILE *, unsigned));
extern const char * current_section_name PARAMS ((void));
extern unsigned int current_section_flags PARAMS ((void));
extern int mips_can_use_return_insn PARAMS ((void));
extern void mips_declare_object PARAMS ((FILE *, const char *, const char *, const char *, int));
extern void mips_expand_epilogue PARAMS ((void));

284
gcc/config/mips/mips.c
View File

@ -40,7 +40,6 @@ Boston, MA 02111-1307, USA. */
#include "recog.h"
#include "toplev.h"
#include "output.h"
#include "tree.h"
#include "function.h"
#include "expr.h"
@ -50,6 +49,8 @@ Boston, MA 02111-1307, USA. */
#include "tm_p.h"
#include "ggc.h"
#include "gstab.h"
#include "hashtab.h"
#include "debug.h"
#include "target.h"
#include "target-def.h"
@ -90,7 +91,6 @@ static void block_move_loop PARAMS ((rtx, rtx,
int,
rtx, rtx));
static void block_move_call PARAMS ((rtx, rtx, rtx));
static FILE *mips_make_temp_file PARAMS ((void));
static rtx mips_add_large_offset_to_sp PARAMS ((HOST_WIDE_INT,
FILE *));
static void mips_annotate_frame_insn PARAMS ((rtx, rtx));
@ -115,8 +115,18 @@ static void mips_add_gc_roots PARAMS ((void));
static void mips_output_function_epilogue PARAMS ((FILE *, HOST_WIDE_INT));
static void mips_output_function_prologue PARAMS ((FILE *, HOST_WIDE_INT));
static enum processor_type mips_parse_cpu PARAMS ((const char *));
static void copy_file_data PARAMS ((FILE *, FILE *));
#ifdef TARGET_IRIX6
static void iris6_asm_named_section_1 PARAMS ((const char *,
unsigned int,
unsigned int));
static void iris6_asm_named_section PARAMS ((const char *,
unsigned int));
static int iris_section_align_entry_eq PARAMS ((const PTR, const PTR));
static hashval_t iris_section_align_entry_hash PARAMS ((const PTR));
static int iris6_section_align_1 PARAMS ((void **, void *));
#endif
/* Global variables for machine-dependent things. */
/* Threshold for data being put into the small data/bss area, instead
@ -276,10 +286,6 @@ struct mips_frame_info current_frame_info;
/* Zero structure to initialize current_frame_info. */
struct mips_frame_info zero_frame_info;
/* Temporary filename used to buffer .text until end of program
for -mgpopt. */
static char *temp_filename;
/* Pseudo-reg holding the address of the current function when
generating embedded PIC code. Created by LEGITIMIZE_ADDRESS, used
by mips_finalize_pic if it was created. */
@ -5786,20 +5792,6 @@ mips_output_external_libcall (file, name)
}
#endif
/* Compute a string to use as a temporary file name. */
static FILE *
mips_make_temp_file ()
{
FILE *stream;
temp_filename = make_temp_file (0);
stream = fopen (temp_filename, "w+");
if (!stream)
fatal_io_error ("can't open %s", temp_filename);
return stream;
}
/* Emit a new filename to a stream. If this is MIPS ECOFF, watch out
for .file's that start within a function. If we are smuggling stabs, try to
put out a MIPS ECOFF file and a stab. */
@ -6045,20 +6037,14 @@ mips_asm_file_start (stream)
if (TARGET_MIPS16)
fprintf (stream, "\t.set\tmips16\n");
/* Start a section, so that the first .popsection directive is guaranteed
to have a previously defined section to pop back to. */
if (mips_abi != ABI_32 && mips_abi != ABI_O64 && mips_abi != ABI_EABI)
fprintf (stream, "\t.section\t.text\n");
/* This code exists so that we can put all externs before all symbol
references. This is necessary for the MIPS assembler's global pointer
optimizations to work. */
if (TARGET_FILE_SWITCHING)
{
asm_out_data_file = stream;
asm_out_text_file = mips_make_temp_file ();
asm_out_text_file = tmpfile ();
}
else
asm_out_data_file = asm_out_text_file = stream;
@ -6077,10 +6063,8 @@ void
mips_asm_file_end (file)
FILE *file;
{
char buffer[8192];
tree name_tree;
struct extern_list *p;
int len;
if (HALF_PIC_P ())
{
@ -6116,25 +6100,32 @@ mips_asm_file_end (file)
if (TARGET_FILE_SWITCHING)
{
fprintf (file, "\n\t.text\n");
rewind (asm_out_text_file);
if (ferror (asm_out_text_file))
fatal_io_error ("can't rewind %s", temp_filename);
while ((len = fread (buffer, 1, sizeof (buffer), asm_out_text_file)) > 0)
if ((int) fwrite (buffer, 1, len, file) != len)
fatal_io_error ("can't write to %s", asm_file_name);
if (len < 0)
fatal_io_error ("can't read from %s", temp_filename);
if (fclose (asm_out_text_file) != 0)
fatal_io_error ("can't close %s", temp_filename);
unlink (temp_filename);
free (temp_filename);
copy_file_data (file, asm_out_text_file);
}
}
static void
copy_file_data (to, from)
FILE *to, *from;
{
char buffer[8192];
size_t len;
rewind (from);
if (ferror (from))
fatal_io_error ("can't rewind temp file");
while ((len = fread (buffer, 1, sizeof (buffer), from)) > 0)
if (fwrite (buffer, 1, len, to) != len)
fatal_io_error ("can't write to output file");
if (ferror (from))
fatal_io_error ("can't read from temp file");
if (fclose (from))
fatal_io_error ("can't close temp file");
}
/* Emit either a label, .comm, or .lcomm directive, and mark that the symbol
is used, so that we don't emit an .extern for it in mips_asm_file_end. */
@ -9752,43 +9743,6 @@ mips_parse_cpu (cpu_string)
return cpu;
}
/* Output assembly to switch to section NAME with attribute FLAGS. */
static void
iris6_asm_named_section (name, flags)
const char *name;
unsigned int flags;
{
unsigned int sh_type, sh_flags, sh_entsize;
sh_flags = 0;
if (!(flags & SECTION_DEBUG))
sh_flags |= 2; /* SHF_ALLOC */
if (flags & SECTION_WRITE)
sh_flags |= 1; /* SHF_WRITE */
if (flags & SECTION_CODE)
sh_flags |= 4; /* SHF_EXECINSTR */
if (flags & SECTION_SMALL)
sh_flags |= 0x10000000; /* SHF_MIPS_GPREL */
if (strcmp (name, ".debug_frame") == 0)
sh_flags |= 0x08000000; /* SHF_MIPS_NOSTRIP */
if (flags & SECTION_DEBUG)
sh_type = 0x7000001e; /* SHT_MIPS_DWARF */
else if (flags & SECTION_BSS)
sh_type = 8; /* SHT_NOBITS */
else
sh_type = 1; /* SHT_PROGBITS */
if (flags & SECTION_CODE)
sh_entsize = 4;
else
sh_entsize = 0;
fprintf (asm_out_file, "\t.section %s,%u,%u,%u,%u\n",
name, sh_type, sh_flags, sh_entsize, 0);
}
/* Cover function for UNIQUE_SECTION. */
void
@ -9797,8 +9751,9 @@ mips_unique_section (decl, reloc)
int reloc;
{
int len, size, sec;
char *name, *string, *prefix;
static char *prefixes[4][2] = {
const char *name, *prefix;
char *string;
static const char *prefixes[4][2] = {
{ ".text.", ".gnu.linkonce.t." },
{ ".rodata.", ".gnu.linkonce.r." },
{ ".data.", ".gnu.linkonce.d." },
@ -9860,3 +9815,164 @@ mips_unique_section (decl, reloc)
DECL_SECTION_NAME (decl) = build_string (len, string);
}
#ifdef TARGET_IRIX6
/* Output assembly to switch to section NAME with attribute FLAGS. */
static void
iris6_asm_named_section_1 (name, flags, align)
const char *name;
unsigned int flags;
unsigned int align;
{
unsigned int sh_type, sh_flags, sh_entsize;
sh_flags = 0;
if (!(flags & SECTION_DEBUG))
sh_flags |= 2; /* SHF_ALLOC */
if (flags & SECTION_WRITE)
sh_flags |= 1; /* SHF_WRITE */
if (flags & SECTION_CODE)
sh_flags |= 4; /* SHF_EXECINSTR */
if (flags & SECTION_SMALL)
sh_flags |= 0x10000000; /* SHF_MIPS_GPREL */
if (strcmp (name, ".debug_frame") == 0)
sh_flags |= 0x08000000; /* SHF_MIPS_NOSTRIP */
if (flags & SECTION_DEBUG)
sh_type = 0x7000001e; /* SHT_MIPS_DWARF */
else if (flags & SECTION_BSS)
sh_type = 8; /* SHT_NOBITS */
else
sh_type = 1; /* SHT_PROGBITS */
if (flags & SECTION_CODE)
sh_entsize = 4;
else
sh_entsize = 0;
fprintf (asm_out_file, "\t.section %s,%#x,%#x,%u,%u\n",
name, sh_type, sh_flags, sh_entsize, align);
}
static void
iris6_asm_named_section (name, flags)
const char *name;
unsigned int flags;
{
if (TARGET_FILE_SWITCHING && (flags & SECTION_CODE))
asm_out_file = asm_out_text_file;
iris6_asm_named_section_1 (name, flags, 0);
}
/* In addition to emitting a .align directive, record the maximum
alignment requested for the current section. */
struct iris_section_align_entry
{
const char *name;
unsigned int log;
unsigned int flags;
};
static htab_t iris_section_align_htab;
static FILE *iris_orig_asm_out_file;
static int
iris_section_align_entry_eq (p1, p2)
const PTR p1;
const PTR p2;
{
const struct iris_section_align_entry *old = p1;
const char *new = p2;
return strcmp (old->name, new) == 0;
}
static hashval_t
iris_section_align_entry_hash (p)
const PTR p;
{
const struct iris_section_align_entry *old = p;
return htab_hash_string (old->name);
}
void
iris6_asm_output_align (file, log)
FILE *file;
unsigned int log;
{
const char *section = current_section_name ();
struct iris_section_align_entry **slot, *entry;
if (! section)
abort ();
slot = (struct iris_section_align_entry **)
htab_find_slot_with_hash (iris_section_align_htab, section,
htab_hash_string (section), INSERT);
entry = *slot;
if (! entry)
{
entry = (struct iris_section_align_entry *)
xmalloc (sizeof (struct iris_section_align_entry));
*slot = entry;
entry->name = section;
entry->log = log;
entry->flags = current_section_flags ();
}
else if (entry->log < log)
entry->log = log;
fprintf (file, "\t.align\t%u\n", log);
}
/* The Iris assembler does not record alignment from .align directives,
but takes it from the first .section directive seen. Play yet more
file switching games so that we can emit a .section directive at the
beginning of the file with the proper alignment attached. */
void
iris6_asm_file_start (stream)
FILE *stream;
{
mips_asm_file_start (stream);
iris_orig_asm_out_file = asm_out_file;
stream = tmpfile ();
asm_out_file = stream;
asm_out_data_file = stream;
if (! TARGET_FILE_SWITCHING)
asm_out_text_file = stream;
iris_section_align_htab = htab_create (31, iris_section_align_entry_hash,
iris_section_align_entry_eq, NULL);
}
static int
iris6_section_align_1 (slot, data)
void **slot;
void *data ATTRIBUTE_UNUSED;
{
const struct iris_section_align_entry *entry
= *(const struct iris_section_align_entry **) slot;
iris6_asm_named_section_1 (entry->name, entry->flags, 1 << entry->log);
return 1;
}
void
iris6_asm_file_end (stream)
FILE *stream;
{
/* Emit section directives with the proper alignment at the top of the
real output file. */
asm_out_file = iris_orig_asm_out_file;
htab_traverse (iris_section_align_htab, iris6_section_align_1, NULL);
/* Copy the data emitted to the temp file to the real output file. */
copy_file_data (asm_out_file, stream);
mips_asm_file_end (stream);
}
#endif /* TARGET_IRIX6 */