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sysv4.h (DO_SELECT_SECTION): Factored out of SELECT_SECTION.
* config/ia64/sysv4.h (DO_SELECT_SECTION): Factored out of SELECT_SECTION. (UNIQUE_SECTION): Define to get small data correctly. From-SVN: r53450
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Andreas Schwab
Andreas Schwab
parent
1b18fc2c4e
commit
c1ae3eb440
@ -1,4 +1,8 @@
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2002-05-13 Andreas Schwab <schwab@suse.de>
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2002-05-14 Andreas Schwab <schwab@suse.de>
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* config/ia64/sysv4.h (DO_SELECT_SECTION): Factored out of
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SELECT_SECTION.
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(UNIQUE_SECTION): Define to get small data correctly.
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* varasm.c (resolve_unique_section): Add third parameter
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flag_function_or_data_sections and use it instead of
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@ -140,45 +140,134 @@ do { \
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emit_safe_across_calls (STREAM); \
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} while (0)
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/* A C statement or statements to switch to the appropriate
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section for output of DECL. DECL is either a `VAR_DECL' node
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or a constant of some sort. RELOC indicates whether forming
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the initial value of DECL requires link-time relocations.
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Set SECNUM to:
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0 .text
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1 .rodata
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2 .data
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3 .sdata
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4 .bss
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5 .sbss
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*/
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#define DO_SELECT_SECTION(SECNUM, DECL, RELOC) \
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do \
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{ \
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if (TREE_CODE (DECL) == STRING_CST) \
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{ \
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if (! flag_writable_strings) \
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SECNUM = 0x101; \
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else \
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SECNUM = 2; \
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} \
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else if (TREE_CODE (DECL) == VAR_DECL) \
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{ \
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if (XSTR (XEXP (DECL_RTL (DECL), 0), 0)[0] \
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== SDATA_NAME_FLAG_CHAR) \
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SECNUM = 3; \
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/* ??? We need the extra RELOC check, because the default \
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is to only check RELOC if flag_pic is set, and we don't \
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set flag_pic (yet?). */ \
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else if (!DECL_READONLY_SECTION (DECL, RELOC) || (RELOC)) \
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SECNUM = 2; \
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else if (flag_merge_constants < 2) \
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/* C and C++ don't allow different variables to share \
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the same location. -fmerge-all-constants allows \
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even that (at the expense of not conforming). */ \
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SECNUM = 1; \
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else if (TREE_CODE (DECL_INITIAL (DECL)) == STRING_CST) \
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SECNUM = 0x201; \
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else \
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SECNUM = 0x301; \
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} \
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/* This could be a CONSTRUCTOR containing ADDR_EXPR of a VAR_DECL, \
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in which case we can't put it in a shared library rodata. */ \
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else if (flag_pic && (RELOC)) \
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SECNUM = 3; \
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else \
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SECNUM = 2; \
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} \
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while (0)
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/* We override svr4.h so that we can support the sdata section. */
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#undef SELECT_SECTION
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#define SELECT_SECTION(DECL,RELOC,ALIGN) \
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{ \
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if (TREE_CODE (DECL) == STRING_CST) \
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do \
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{ \
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if (! flag_writable_strings) \
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mergeable_string_section ((DECL), (ALIGN), 0); \
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else \
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data_section (); \
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typedef void (*sec_fn) PARAMS ((void)); \
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static sec_fn const sec_functions[6] = \
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{ \
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text_section, \
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const_section, \
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data_section, \
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sdata_section, \
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bss_section, \
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sbss_section \
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}; \
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\
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int sec; \
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\
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DO_SELECT_SECTION (sec, DECL, RELOC); \
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\
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switch (sec) \
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{ \
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case 0x101: \
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mergeable_string_section (DECL, ALIGN, 0); \
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break; \
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case 0x201: \
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mergeable_string_section (DECL_INITIAL (DECL), \
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ALIGN, 0); \
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break; \
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case 0x301: \
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mergeable_constant_section (DECL_MODE (DECL), \
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ALIGN, 0); \
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break; \
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default: \
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(*sec_functions[sec]) (); \
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break; \
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} \
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} \
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else if (TREE_CODE (DECL) == VAR_DECL) \
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while (0)
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#undef UNIQUE_SECTION
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#define UNIQUE_SECTION(DECL, RELOC) \
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do \
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{ \
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if (XSTR (XEXP (DECL_RTL (DECL), 0), 0)[0] \
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== SDATA_NAME_FLAG_CHAR) \
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sdata_section (); \
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/* ??? We need the extra RELOC check, because the default is to \
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only check RELOC if flag_pic is set, and we don't set flag_pic \
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(yet?). */ \
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else if (!DECL_READONLY_SECTION (DECL, RELOC) || (RELOC)) \
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data_section (); \
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else if (flag_merge_constants < 2) \
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/* C and C++ don't allow different variables to share \
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the same location. -fmerge-all-constants allows \
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even that (at the expense of not conforming). */ \
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const_section (); \
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else if (TREE_CODE (DECL_INITIAL (DECL)) == STRING_CST) \
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mergeable_string_section (DECL_INITIAL (DECL), (ALIGN), 0); \
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else \
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mergeable_constant_section (DECL_MODE (DECL), (ALIGN), 0); \
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static const char * const prefixes[6][2] = \
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{ \
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{ ".text.", ".gnu.linkonce.t." }, \
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{ ".rodata.", ".gnu.linkonce.r." }, \
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{ ".data.", ".gnu.linkonce.d." }, \
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{ ".sdata.", ".gnu.linkonce.s." }, \
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{ ".bss.", ".gnu.linkonce.b." }, \
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{ ".sbss.", ".gnu.linkonce.sb." } \
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}; \
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\
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int nlen, plen, sec; \
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const char *name, *prefix; \
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char *string; \
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\
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DO_SELECT_SECTION (sec, DECL, RELOC); \
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\
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name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
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STRIP_NAME_ENCODING (name, name); \
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nlen = strlen (name); \
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\
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prefix = prefixes[sec & 0xff][DECL_ONE_ONLY(DECL)]; \
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plen = strlen (prefix); \
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\
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string = alloca (nlen + plen + 1); \
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\
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memcpy (string, prefix, plen); \
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memcpy (string + plen, name, nlen + 1); \
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\
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DECL_SECTION_NAME (DECL) = build_string (nlen + plen, string); \
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} \
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/* This could be a CONSTRUCTOR containing ADDR_EXPR of a VAR_DECL, \
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in which case we can't put it in a shared library rodata. */ \
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else if (flag_pic && (RELOC)) \
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data_section (); \
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else \
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const_section (); \
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}
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while (0)
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/* Similarly for constant pool data. */
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