elf.h (ASM_OUTPUT_ALIGNED_BSS): Put the symbol in .sbss if appropriate.

* config/mips/elf.h (ASM_OUTPUT_ALIGNED_BSS): Put the symbol
in .sbss if appropriate.
(EXTRA_SECTION_FUNCTIONS): Add sbss.
(SBSS_SECTION_ASM_OP): New macro.
* config/mips/linux.h (EXTRA_SECTION_FUNCTIONS): Add sbss.
(EXTRA_SECTIONS): Add in_sbss.
* config/mips/mips.h: Prototype sbss_section.

From-SVN: r29648

gcc/ChangeLog

+Fri Sep 24 11:57:06 1999  Geoffrey Keating  <geoffk@cygnus.com>
+
+	* config/mips/elf.h (ASM_OUTPUT_ALIGNED_BSS): Put the symbol
+	in .sbss if appropriate.
+	(EXTRA_SECTION_FUNCTIONS): Add sbss.
+	(SBSS_SECTION_ASM_OP): New macro.
+	* config/mips/linux.h (EXTRA_SECTION_FUNCTIONS): Add sbss.
+	(EXTRA_SECTIONS): Add in_sbss.
+	* config/mips/mips.h: Prototype sbss_section.
+
 Thu Sep 23 18:18:55 1999  Mark Mitchell  <mark@codesourcery.com>
 
 	* stmt.c (expand_start_bindings): Don't allow cleanup isntructions

gcc/config/mips/elf.h

@@ -101,6 +101,8 @@ do {								\
 #define BSS_SECTION_ASM_OP	".section\t.bss"
 #endif
 
+#define SBSS_SECTION_ASM_OP	"\t.section .sbss"
+
 /* 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
@@ -111,7 +113,17 @@ do {								\
    `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)
+do {									\
+  ASM_GLOBALIZE_LABEL (FILE, NAME);					\
+  if (SIZE > 0 && SIZE <= mips_section_threshold)			\
+    sbss_section ();							\
+  else									\
+    bss_section ();							\
+  ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT));		\
+  last_assemble_variable_decl = DECL;					\
+  ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL);				\
+  ASM_OUTPUT_SKIP (FILE, SIZE ? SIZE : 1);				\
+} while (0)
 #endif
 
 /* These macros generate the special .type and .size directives which
@@ -281,7 +293,7 @@ do {									   \
 /* A list of other sections which the compiler might be "in" at any
    given time.  */
 #undef EXTRA_SECTIONS
-#define EXTRA_SECTIONS in_sdata, in_rdata, in_ctors, in_dtors
+#define EXTRA_SECTIONS in_sdata, in_sbss, in_rdata, in_ctors, in_dtors
  
 #define INVOKE__main
 #define NAME__MAIN "__gccmain"
@@ -290,6 +302,7 @@ do {									   \
 #undef EXTRA_SECTION_FUNCTIONS
 #define EXTRA_SECTION_FUNCTIONS                                         \
   SECTION_FUNCTION_TEMPLATE(sdata_section, in_sdata, SDATA_SECTION_ASM_OP) \
+  SECTION_FUNCTION_TEMPLATE(sbss_section, in_sbss, SBSS_SECTION_ASM_OP) \
   SECTION_FUNCTION_TEMPLATE(rdata_section, in_rdata, RDATA_SECTION_ASM_OP) \
   SECTION_FUNCTION_TEMPLATE(ctors_section, in_ctors, CTORS_SECTION_ASM_OP) \
   SECTION_FUNCTION_TEMPLATE(dtors_section, in_dtors, DTORS_SECTION_ASM_OP)

gcc/config/mips/linux.h

@@ -82,7 +82,7 @@ Boston, MA 02111-1307, USA.  */
 #undef DTORS_SECTION_ASM_OP
 
 #undef EXTRA_SECTIONS
-#define EXTRA_SECTIONS in_sdata, in_rdata
+#define EXTRA_SECTIONS in_sdata, in_sbss, in_rdata
 
 #undef INVOKE__main
 #undef NAME__MAIN
@@ -91,6 +91,7 @@ Boston, MA 02111-1307, USA.  */
 #undef EXTRA_SECTION_FUNCTIONS
 #define EXTRA_SECTION_FUNCTIONS                                         \
   SECTION_FUNCTION_TEMPLATE(sdata_section, in_sdata, SDATA_SECTION_ASM_OP) \
+  SECTION_FUNCTION_TEMPLATE(sbss_section, in_sbss, SBSS_SECTION_ASM_OP) \
   SECTION_FUNCTION_TEMPLATE(rdata_section, in_rdata, RDATA_SECTION_ASM_OP)
 
 #undef ASM_OUTPUT_CONSTRUCTOR

gcc/config/mips/mips.h

@@ -163,6 +163,7 @@ extern struct rtx_def *mips16_gp_pseudo_rtx; /* psuedo reg holding $gp */
 /* Functions to change what output section we are using.  */
 extern void		rdata_section PARAMS ((void));
 extern void		sdata_section PARAMS ((void));
+extern void		sbss_section PARAMS ((void));
 
 /* Stubs for half-pic support if not OSF/1 reference platform.  */