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Come up with section_flag enum.

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gcc/ChangeLog:

	* output.h (enum section_flag): New.
	(SECTION_FORGET): Remove.
	(SECTION_ENTSIZE): Make it (1UL << 8) - 1.
	(SECTION_STYLE_MASK): Define it based on other enum
	values.
	* varasm.c (switch_to_section): Remove unused handling of
	SECTION_FORGET.
This commit is contained in:
Martin Liska 2021-09-06 17:40:16 +02:00
parent a64697d7a3
commit dd11aab646
2 changed files with 44 additions and 38 deletions
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77
gcc/output.h
View file

@ -365,44 +365,53 @@ extern void default_function_switched_text_sections (FILE *, tree, bool);
extern void no_asm_to_stream (FILE *);
/* Flags controlling properties of a section. */
#define SECTION_ENTSIZE 0x000ff /* entity size in section */
#define SECTION_CODE 0x00100 /* contains code */
#define SECTION_WRITE 0x00200 /* data is writable */
#define SECTION_DEBUG 0x00400 /* contains debug data */
#define SECTION_LINKONCE 0x00800 /* is linkonce */
#define SECTION_SMALL 0x01000 /* contains "small data" */
#define SECTION_BSS 0x02000 /* contains zeros only */
#define SECTION_FORGET 0x04000 /* forget that we've entered the section */
#define SECTION_MERGE 0x08000 /* contains mergeable data */
#define SECTION_STRINGS 0x10000 /* contains zero terminated strings without
embedded zeros */
#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_DECLARED 0x100000 /* section has been used */
#define SECTION_STYLE_MASK 0x600000 /* bits used for SECTION_STYLE */
#define SECTION_COMMON 0x800000 /* contains common data */
#define SECTION_RELRO 0x1000000 /* data is readonly after relocation processing */
#define SECTION_EXCLUDE 0x2000000 /* discarded by the linker */
#define SECTION_RETAIN 0x4000000 /* retained by the linker. */
#define SECTION_LINK_ORDER 0x8000000 /* section needs link-order. */
enum section_flag
{
/* This SECTION_STYLE is used for unnamed sections that we can switch
to using a special assembler directive. */
SECTION_UNNAMED = 0,
/* NB: The maximum SECTION_MACH_DEP is 0x10000000 since AVR needs 4 bits
in SECTION_MACH_DEP. */
#define SECTION_MACH_DEP 0x10000000 /* subsequent bits reserved for target */
SECTION_ENTSIZE = (1UL << 8) - 1, /* entity size in section */
SECTION_CODE = 1UL << 8, /* contains code */
SECTION_WRITE = 1UL << 9, /* data is writable */
/* This SECTION_STYLE is used for unnamed sections that we can switch
to using a special assembler directive. */
#define SECTION_UNNAMED 0x000000
SECTION_DEBUG = 1UL << 10, /* contains debug data */
SECTION_LINKONCE = 1UL << 11, /* is linkonce */
SECTION_SMALL = 1UL << 12, /* contains "small data" */
SECTION_BSS = 1UL << 13, /* contains zeros only */
SECTION_MERGE = 1UL << 14, /* contains mergeable data */
SECTION_STRINGS = 1UL << 15, /* contains zero terminated strings
without embedded zeros */
SECTION_OVERRIDE = 1UL << 16, /* allow override of default flags */
SECTION_TLS = 1UL << 17, /* contains thread-local storage */
SECTION_NOTYPE = 1UL << 18, /* don't output @progbits */
SECTION_DECLARED = 1UL << 19, /* section has been used */
/* This SECTION_STYLE is used for named sections that we can switch
to using a general section directive. */
#define SECTION_NAMED 0x200000
/* This SECTION_STYLE is used for named sections that we can switch
to using a general section directive. */
SECTION_NAMED = 1UL << 20,
/* This SECTION_STYLE is used for sections that we cannot switch to at
all. The choice of section is implied by the directive that we use
to declare the object. */
#define SECTION_NOSWITCH 0x400000
/* This SECTION_STYLE is used for sections that we cannot switch to at
all. The choice of section is implied by the directive that we use
to declare the object. */
SECTION_NOSWITCH = 1UL << 21,
/* bits used for SECTION_STYLE */
SECTION_STYLE_MASK = SECTION_NAMED | SECTION_NOSWITCH,
SECTION_COMMON = 1UL << 22, /* contains common data */
SECTION_RELRO = 1UL << 23, /* data is readonly after
relocation processing */
SECTION_EXCLUDE = 1UL << 24, /* discarded by the linker */
SECTION_RETAIN = 1UL << 25, /* retained by the linker. */
SECTION_LINK_ORDER = 1UL << 26, /* section needs link-order. */
/* NB: The maximum SECTION_MACH_DEP is (1UL << 28) since AVR needs 4 bits
in SECTION_MACH_DEP. */
SECTION_MACH_DEP = 1UL << 27,
/* subsequent bits reserved for target */
};
/* A helper function for default_elf_select_section and
default_elf_unique_section. Categorizes the DECL. */

5
gcc/varasm.c
View file

@ -7827,10 +7827,7 @@ switch_to_section (section *new_section, tree decl)
else if (in_section == new_section)
return;
if (new_section->common.flags & SECTION_FORGET)
in_section = NULL;
else
in_section = new_section;
in_section = new_section;
switch (SECTION_STYLE (new_section))
{