52482219c8
Renaming "modlib" to "libelf" is more in line with the implementation content, which makes it easier for individual developers to understand the capabilities of this module. CONFIG_LIBC_MODLIB -> CONFIG_LIBC_ELF Signed-off-by: chao an <anchao.archer@bytedance.com>
119 lines
3.6 KiB
Text
119 lines
3.6 KiB
Text
#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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config LIBC_ELF
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bool "Enable module library"
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default n
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select LIBC_ARCH_ELF
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select ARCH_USE_TEXT_HEAP if ARCH_HAVE_TEXT_HEAP
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menu "Module library configuration"
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depends on LIBC_ELF
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config LIBC_ELF_MAXDEPEND
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int "Max dependencies"
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default 2
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---help---
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This setting controls the number of other modules that a new module
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may depend on. That is, when a new module in inserted via 'insmod'
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it may depend on symbols exported by other, already installed
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modules. This is the maximum number of modules that export symbols
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to the new module. This maximum is artificial; it is used in the
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current design because it uses some very simple, pre-allocated data
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structures.
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All dependencies logic my be eliminated by set CONFIG_LIBC_ELF_MAXDEPEND
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to zero.
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config LIBC_ELF_ALIGN_LOG2
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int "Log2 Section Alignment"
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default 2
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---help---
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Align all sections to this Log2 value: 0->1, 1->2, 2->4, etc.
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config LIBC_ELF_BUFFERSIZE
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int "Module I/O Buffer Size"
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default 32
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---help---
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This is an I/O buffer that is used to access the module file.
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Variable length items will need to be read (such as symbol names).
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This is really just this initial size of the buffer; it will be
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reallocated as necessary to hold large symbol names). Default: 32
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config LIBC_ELF_BUFFERINCR
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int "Module I/O Buffer Realloc Increment"
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default 32
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---help---
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This is an I/O buffer that is used to access the module file.
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Variable length items will need to be read (such as symbol names).
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This value specifies the size increment to use each time the
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buffer is reallocated. Default: 32
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config LIBC_ELF_DUMPBUFFER
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bool "Dump module buffers"
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default n
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depends on DEBUG_INFO
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---help---
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Dump various module buffers for debug purposes
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config LIBC_ELF_HAVE_SYMTAB
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bool "Have symbol table"
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default n
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---help---
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If you have a module library symbol table, then you may select this
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option in order to use it. Symbol tables are required in most
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cases in order to link executable programs to the base code.
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config LIBC_ELF_RELOCATION_BUFFERCOUNT
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int "LIBELF Relocation Table Buffer Count"
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default 256
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---help---
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This is an cache buffer that is used to store elf relocation table to
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reduce access fs. Default: 256
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config LIBC_ELF_SYMBOL_CACHECOUNT
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int "LIBELF SYMBOL Table Cache Count"
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default 256
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---help---
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This is an cache that is used to store elf symbol table to
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reduce access fs. Default: 256
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if LIBC_ELF_HAVE_SYMTAB
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config LIBC_ELF_SYMTAB_ARRAY
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string "Symbol table name used by dlsym"
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default "g_mod_symtab" if !EXECFUNCS_HAVE_SYMTAB
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default EXECFUNCS_SYMTAB_ARRAY if EXECFUNCS_HAVE_SYMTAB
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config LIBC_ELF_NSYMBOLS_VAR
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string "Name of variable holding the number of symbols"
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default "g_mod_nsymbols" if !EXECFUNCS_HAVE_SYMTAB
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default EXECFUNCS_NSYMBOLS_VAR if EXECFUNCS_HAVE_SYMTAB
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config LIBC_ELF_SYSTEM_SYMTAB
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bool "Generate the system symbol table"
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default n
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endif # LIBC_ELF_HAVE_SYMTAB
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config LIBC_ELF_LOADTO_LMA
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bool "elf load sections to LMA"
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default n
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---help---
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Load all section to LMA not VMA, so the startup code(e.g. start.S) need
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relocate .data section to the final address(VMA) and zero .bss section
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by self.
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config LIBC_ELF_EXIDX_SECTNAME
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string "ELF Section Name for Exception Index"
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default ".ARM.exidx"
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depends on CXX_EXCEPTION && ARCH_ARM
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---help---
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Set the name string for the exception index section on the ELF modules to
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be loaded by the ELF binary loader.
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This is needed to support exception handling on loadable ELF modules.
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endmenu # Module library configuration
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