diff options
Diffstat (limited to 'gcc/output.h')
| -rw-r--r-- | gcc/output.h | 206 |
1 files changed, 93 insertions, 113 deletions
diff --git a/gcc/output.h b/gcc/output.h index 3cb091f..47989e9 100644 --- a/gcc/output.h +++ b/gcc/output.h @@ -153,77 +153,6 @@ extern int regno_clobbered_at_setjmp (int); /* Functions in varasm.c. */ -/* Tell assembler to switch to text section. */ -extern void text_section (void); - -/* Tell assembler to switch to unlikely-to-be-executed text section. */ -extern void unlikely_text_section (void); - -/* Tell assembler to switch to data section. */ -extern void data_section (void); - -/* Tell assembler to switch to read-only data section. This is normally - the text section. */ -extern void readonly_data_section (void); - -/* Determine if we're in the text section. */ -extern int in_text_section (void); - -/* Determine if we're in the unlikely-to-be-executed text section. */ -extern int in_unlikely_text_section (void); - -#ifdef CTORS_SECTION_ASM_OP -extern void ctors_section (void); -#endif - -#ifdef DTORS_SECTION_ASM_OP -extern void dtors_section (void); -#endif - -#ifdef BSS_SECTION_ASM_OP -extern void bss_section (void); -#endif - -#ifdef INIT_SECTION_ASM_OP -extern void init_section (void); -#endif - -#ifdef FINI_SECTION_ASM_OP -extern void fini_section (void); -#endif - -#ifdef EXPORTS_SECTION_ASM_OP -extern void exports_section (void); -#endif - -#ifdef DRECTVE_SECTION_ASM_OP -extern void drectve_section (void); -#endif - -#ifdef SDATA_SECTION_ASM_OP -extern void sdata_section (void); -#endif - -/* Tell assembler to change to section NAME for DECL. - If DECL is NULL, just switch to section NAME. - If NAME is NULL, get the name from DECL. - If RELOC is 1, the initializer for DECL contains relocs. */ -extern void named_section (tree, const char *, int); - -/* Tell assembler to switch to the section for function DECL. */ -extern void function_section (tree); - -/* Tell assembler to switch to the most recently used text section. */ -extern void current_function_section (tree); - -/* Tell assembler to switch to the section for string merging. */ -extern void mergeable_string_section (tree, unsigned HOST_WIDE_INT, - unsigned int); - -/* Tell assembler to switch to the section for constant merging. */ -extern void mergeable_constant_section (enum machine_mode, - unsigned HOST_WIDE_INT, unsigned int); - /* Declare DECL to be a weak symbol. */ extern void declare_weak (tree); /* Merge weak status. */ @@ -438,27 +367,6 @@ extern rtx this_is_asm_operands; extern int size_directive_output; extern tree last_assemble_variable_decl; -enum in_section { no_section, in_text, in_unlikely_executed_text, in_data, - in_named -#ifdef BSS_SECTION_ASM_OP - , in_bss -#endif -#ifdef CTORS_SECTION_ASM_OP - , in_ctors -#endif -#ifdef DTORS_SECTION_ASM_OP - , in_dtors -#endif -#ifdef READONLY_DATA_SECTION_ASM_OP - , in_readonly_data -#endif -#ifdef EXTRA_SECTIONS - , EXTRA_SECTIONS -#endif -}; - -extern const char *last_text_section_name; -extern enum in_section last_text_section; extern bool first_function_block_is_cold; /* Decide whether DECL needs to be in a writable section. @@ -476,13 +384,11 @@ extern const char *user_label_prefix; /* Default target function prologue and epilogue assembler output. */ extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT); -/* Tell assembler to switch to the section for the exception table. */ -extern void default_exception_section (void); +/* Return the default value of exception_section. */ +extern section *default_exception_section (void); -/* Tell assembler to switch to the section for the EH frames. */ -extern void named_section_eh_frame_section (void); -extern void collect2_eh_frame_section (void); -extern void default_eh_frame_section (void); +/* Return the default value of eh_frame_section. */ +extern section *default_eh_frame_section (void); /* Default target hook that outputs nothing to a stream. */ extern void no_asm_to_stream (FILE *); @@ -502,7 +408,9 @@ extern void no_asm_to_stream (FILE *); #define SECTION_OVERRIDE 0x20000 /* allow override of default flags */ #define SECTION_TLS 0x40000 /* contains thread-local storage */ #define SECTION_NOTYPE 0x80000 /* don't output @progbits */ -#define SECTION_MACH_DEP 0x100000 /* subsequent bits reserved for target */ +#define SECTION_DECLARED 0x100000 /* section has been used */ +#define SECTION_NAMED 0x200000 /* section has a name */ +#define SECTION_MACH_DEP 0x400000 /* subsequent bits reserved for target */ /* A helper function for default_elf_select_section and default_elf_unique_section. Categorizes the DECL. */ @@ -541,12 +449,81 @@ enum section_category SECCAT_TBSS }; +/* Information that is provided by all instances of the section type. */ +struct section_common GTY(()) { + /* The set of SECTION_* flags that apply to this section. */ + unsigned int flags; +}; + +/* Information that is provided by named sections. */ +struct named_section GTY(()) { + struct section_common common; + + /* The name of the section. */ + const char *name; + + /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the + section is associated. */ + tree decl; +}; + +/* A callback that writes the assembly code for switching to an unnamed + section. The argument provides callback-specific data. */ +typedef void (*unnamed_section_callback) (const void *); + +/* Information that is provided by unnamed sections. */ +struct unnamed_section GTY(()) { + struct section_common common; + + /* The callback used to switch to the section, and the data that + should be passed to the callback. */ + unnamed_section_callback GTY ((skip)) callback; + const void *GTY ((skip)) data; + + /* The next entry in the chain of unnamed sections. */ + section *next; +}; + +/* Information about a section, which may be named or unnamed. */ +union section GTY ((desc ("(%h).common.flags & SECTION_NAMED"))) +{ + struct section_common GTY ((skip)) common; + struct named_section GTY ((tag ("SECTION_NAMED"))) named; + struct unnamed_section GTY ((tag ("0"))) unnamed; +}; + +/* Special well-known sections. */ +extern GTY(()) section *text_section; +extern GTY(()) section *data_section; +extern GTY(()) section *readonly_data_section; +extern GTY(()) section *sdata_section; +extern GTY(()) section *ctors_section; +extern GTY(()) section *dtors_section; +extern GTY(()) section *bss_section; +extern GTY(()) section *sbss_section; +extern GTY(()) section *init_section; +extern GTY(()) section *fini_section; +extern GTY(()) section *exception_section; +extern GTY(()) section *eh_frame_section; + +extern GTY(()) section *in_section; +extern GTY(()) section *last_text_section; + +extern section *get_unnamed_section (unsigned int, void (*) (const void *), + const void *); +extern section *get_section (const char *, unsigned int, tree); +extern section *get_named_section (tree, const char *, int); +extern section *mergeable_constant_section (enum machine_mode, + unsigned HOST_WIDE_INT, + unsigned int); +extern section *function_section (tree); +extern section *unlikely_text_section (void); +extern section *current_function_section (void); + +extern bool unlikely_text_section_p (section *); +extern void switch_to_section (section *); +extern void output_section_asm_op (const void *); -extern bool set_named_section_flags (const char *, unsigned int); -#define named_section_flags(NAME, FLAGS) \ - named_section_real((NAME), (FLAGS), /*decl=*/NULL_TREE) -extern void named_section_real (const char *, unsigned int, tree); -extern bool named_section_first_declaration (const char *); extern unsigned int default_section_type_flags (tree, const char *, int); extern unsigned int default_section_type_flags_1 (tree, const char *, int, int); @@ -563,18 +540,21 @@ extern void default_stabs_asm_out_constructor (rtx, int); extern void default_named_section_asm_out_constructor (rtx, int); extern void default_ctor_section_asm_out_constructor (rtx, int); -extern void default_select_section (tree, int, unsigned HOST_WIDE_INT); -extern void default_elf_select_section (tree, int, unsigned HOST_WIDE_INT); -extern void default_elf_select_section_1 (tree, int, - unsigned HOST_WIDE_INT, int); +extern section *default_select_section (tree, int, + unsigned HOST_WIDE_INT); +extern section *default_elf_select_section (tree, int, + unsigned HOST_WIDE_INT); +extern section *default_elf_select_section_1 (tree, int, + unsigned HOST_WIDE_INT, + int); extern void default_unique_section (tree, int); extern void default_unique_section_1 (tree, int, int); -extern void default_function_rodata_section (tree); -extern void default_no_function_rodata_section (tree); -extern void default_select_rtx_section (enum machine_mode, rtx, - unsigned HOST_WIDE_INT); -extern void default_elf_select_rtx_section (enum machine_mode, rtx, +extern section *default_function_rodata_section (tree); +extern section *default_no_function_rodata_section (tree); +extern section *default_select_rtx_section (enum machine_mode, rtx, unsigned HOST_WIDE_INT); +extern section *default_elf_select_rtx_section (enum machine_mode, rtx, + unsigned HOST_WIDE_INT); extern void default_encode_section_info (tree, rtx, int); extern const char *default_strip_name_encoding (const char *); extern bool default_binds_local_p (tree); |