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Diffstat (limited to 'gcc/config/rs6000/rs6000.h')
-rw-r--r--gcc/config/rs6000/rs6000.h61
1 files changed, 37 insertions, 24 deletions
diff --git a/gcc/config/rs6000/rs6000.h b/gcc/config/rs6000/rs6000.h
index f3f3f2e..d36bfc2 100644
--- a/gcc/config/rs6000/rs6000.h
+++ b/gcc/config/rs6000/rs6000.h
@@ -1,5 +1,5 @@
/* Definitions of target machine for GNU compiler, for IBM RS/6000.
- Copyright (C) 1992, 93-98, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1992, 93-99, 2000 Free Software Foundation, Inc.
Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
This file is part of GNU CC.
@@ -508,7 +508,6 @@ extern int rs6000_debug_arg; /* debug argument handling */
/* Define this to change the optimizations performed by default. */
#define OPTIMIZATION_OPTIONS(LEVEL,SIZE) optimization_options(LEVEL,SIZE)
-
/* Show we can debug even without a frame pointer. */
#define CAN_DEBUG_WITHOUT_FP
@@ -636,6 +635,9 @@ extern int rs6000_debug_arg; /* debug argument handling */
/* No data type wants to be aligned rounder than this. */
#define BIGGEST_ALIGNMENT 64
+/* Handle #pragma pack. */
+#define HANDLE_PRAGMA_PACK 1
+
/* AIX word-aligns FP doubles but doubleword-aligns 64-bit ints. */
#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
(TYPE_MODE (TREE_CODE (TREE_TYPE (FIELD)) == ARRAY_TYPE \
@@ -677,6 +679,14 @@ extern int rs6000_debug_arg; /* debug argument handling */
/* Non-zero if move instructions will actually fail to work
when given unaligned data. */
#define STRICT_ALIGNMENT 0
+
+/* Define this macro to be the value 1 if unaligned accesses have a cost
+ many times greater than aligned accesses, for example if they are
+ emulated in a trap handler. */
+#define SLOW_UNALIGNED_ACCESS(MODE, ALIGN) \
+ ((((MODE) == SFmode || (MODE) == DFmode || (MODE) == DImode) \
+ && (ALIGN) < 4) ? 1 : 0)
+
/* Standard register usage. */
@@ -861,8 +871,8 @@ extern int rs6000_debug_arg; /* debug argument handling */
On the RS/6000, bump this up a bit. */
-#define MEMORY_MOVE_COST(MODE,CLASS,IN) \
- ((GET_MODE_CLASS (MODE) == MODE_FLOAT \
+#define MEMORY_MOVE_COST(MODE, CLASS, IN) \
+ ((GET_MODE_CLASS (MODE) == MODE_FLOAT \
&& (rs6000_cpu == PROCESSOR_RIOS1 || rs6000_cpu == PROCESSOR_PPC601) \
? 3 : 2) \
+ 4)
@@ -882,7 +892,7 @@ extern int rs6000_debug_arg; /* debug argument handling */
output-dependencies. In fact, output dependencies on the CR do have
a cost, but it is probably not worthwhile to track it. */
-#define ADJUST_COST(INSN,LINK,DEP_INSN,COST) \
+#define ADJUST_COST(INSN, LINK, DEP_INSN, COST) \
(COST) = rs6000_adjust_cost (INSN,LINK,DEP_INSN,COST)
/* A C statement (sans semicolon) to update the integer scheduling priority
@@ -2176,7 +2186,7 @@ do { \
/* Specify the machine mode that this machine uses
for the index in the tablejump instruction. */
-#define CASE_VECTOR_MODE (TARGET_32BIT ? SImode : DImode)
+#define CASE_VECTOR_MODE SImode
/* Define as C expression which evaluates to nonzero if the tablejump
instruction expects the table to contain offsets from the address of the
@@ -2524,7 +2534,8 @@ extern int rs6000_trunc_used;
text_section (); \
fputs ("_section_.text:\n", FILE); \
data_section (); \
- fputs ("\t.long _section_.text\n", FILE); \
+ fputs (TARGET_32BIT \
+ ? "\t.long _section_.text\n" : "\t.llong _section_.text\n", FILE); \
}
/* We define this to prevent the name mangler from putting dollar signs into
@@ -2567,10 +2578,10 @@ extern int rs6000_trunc_used;
that we can branch to this function without emitting a no-op after the
call. Do not set this flag if the function is weakly defined. */
-#define ENCODE_SECTION_INFO(DECL) \
+#define ENCODE_SECTION_INFO(DECL) \
if (TREE_CODE (DECL) == FUNCTION_DECL \
&& (TREE_ASM_WRITTEN (DECL) || ! TREE_PUBLIC (DECL)) \
- && !DECL_WEAK (DECL)) \
+ && ! DECL_WEAK (DECL)) \
SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 1;
/* Indicate that jump tables go in the text section. */
@@ -2587,7 +2598,7 @@ read_only_data_section () \
{ \
if (in_section != read_only_data) \
{ \
- fprintf (asm_out_file, ".csect %s[RO],3\n", \
+ fprintf (asm_out_file, "\t.csect %s[RO],3\n", \
xcoff_read_only_section_name); \
in_section = read_only_data; \
} \
@@ -2598,7 +2609,7 @@ private_data_section () \
{ \
if (in_section != private_data) \
{ \
- fprintf (asm_out_file, ".csect %s[RW],3\n", \
+ fprintf (asm_out_file, "\t.csect %s[RW],3\n", \
xcoff_private_data_section_name); \
in_section = private_data; \
} \
@@ -2609,7 +2620,7 @@ read_only_private_data_section () \
{ \
if (in_section != read_only_private_data) \
{ \
- fprintf (asm_out_file, ".csect %s[RO],3\n", \
+ fprintf (asm_out_file, "\t.csect %s[RO],3\n", \
xcoff_private_data_section_name); \
in_section = read_only_private_data; \
} \
@@ -2625,19 +2636,19 @@ toc_section () \
in each file. */ \
if (! toc_initialized) \
{ \
- fputs (".toc\nLCTOC..0:\n", asm_out_file); \
+ fputs ("\t.toc\nLCTOC..0:\n", asm_out_file); \
fputs ("\t.tc toc_table[TC],toc_table[RW]\n", asm_out_file); \
toc_initialized = 1; \
} \
\
if (in_section != toc) \
- fprintf (asm_out_file, ".csect toc_table[RW]%s\n", \
+ fprintf (asm_out_file, "\t.csect toc_table[RW]%s\n", \
(TARGET_32BIT ? "" : ",3")); \
} \
else \
{ \
if (in_section != toc) \
- fputs (".toc\n", asm_out_file); \
+ fputs ("\t.toc\n", asm_out_file); \
} \
in_section = toc; \
}
@@ -2651,9 +2662,10 @@ extern int toc_initialized;
The csect for the function will have already been created by the
`text_section' call previously done. We do have to go back to that
- csect, however. */
+ csect, however.
-/* ??? What do the 16 and 044 in the .function line really mean? */
+ The third and fourth parameters to the .function pseudo-op (16 and 044)
+ are placeholders which no longer have any use. */
#define ASM_DECLARE_FUNCTION_NAME(FILE,NAME,DECL) \
{ if (TREE_PUBLIC (DECL)) \
@@ -2668,7 +2680,7 @@ extern int toc_initialized;
RS6000_OUTPUT_BASENAME (FILE, NAME); \
putc ('\n', FILE); \
} \
- fputs (".csect ", FILE); \
+ fputs ("\t.csect ", FILE); \
RS6000_OUTPUT_BASENAME (FILE, NAME); \
fputs (TARGET_32BIT ? "[DS]\n" : "[DS],3\n", FILE); \
RS6000_OUTPUT_BASENAME (FILE, NAME); \
@@ -2676,7 +2688,8 @@ extern int toc_initialized;
fputs (TARGET_32BIT ? "\t.long ." : "\t.llong .", FILE); \
RS6000_OUTPUT_BASENAME (FILE, NAME); \
fputs (", TOC[tc0], 0\n", FILE); \
- fputs (".csect .text[PR]\n.", FILE); \
+ fputs (TARGET_32BIT \
+ ? "\t.csect .text[PR]\n." : "\t.csect .text[PR],3\n.", FILE); \
RS6000_OUTPUT_BASENAME (FILE, NAME); \
fputs (":\n", FILE); \
if (write_symbols == XCOFF_DEBUG) \
@@ -2855,7 +2868,7 @@ do { \
Text section for 64-bit target may contain 64-bit address jump table. */
#define TEXT_SECTION_ASM_OP (TARGET_32BIT \
- ? ".csect .text[PR]" : ".csect .text[PR],3")
+ ? "\t.csect .text[PR]" : "\t.csect .text[PR],3")
/* Output before writable data.
Align entire section to BIGGEST_ALIGNMENT. */
@@ -3120,7 +3133,7 @@ do { \
#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
do { char buf[100]; \
- fputs (TARGET_32BIT ? "\t.long " : "\t.llong ", FILE); \
+ fputs ("\t.long ", FILE); \
ASM_GENERATE_INTERNAL_LABEL (buf, "L", VALUE); \
assemble_name (FILE, buf); \
putc ('\n', FILE); \
@@ -3128,9 +3141,9 @@ do { \
/* This is how to output an element of a case-vector that is relative. */
-#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
+#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
do { char buf[100]; \
- fputs (TARGET_32BIT ? "\t.long " : "\t.llong ", FILE); \
+ fputs ("\t.long ", FILE); \
ASM_GENERATE_INTERNAL_LABEL (buf, "L", VALUE); \
assemble_name (FILE, buf); \
putc ('-', FILE); \
@@ -3323,7 +3336,7 @@ extern struct rtx_def *function_arg ();
extern int function_arg_partial_nregs ();
extern int function_arg_pass_by_reference ();
extern void setup_incoming_varargs ();
-extern union tree_node *rs6000_va_list ();
+extern union tree_node *rs6000_build_va_list ();
extern void rs6000_va_start ();
extern struct rtx_def *rs6000_va_arg ();
extern struct rtx_def *rs6000_stack_temp ();
generated by cgit v1.1 at 2024-11-10 00:04:13 +0000