b5cd7c2a82
* build-globals.sh
- Macros for defining symbols etc. based on assembler in use
- Use the System.map to get all the nuttx symbols
* libs/libc/modlib/modlib_globals.S
- Provide an empty skeleton. If the dynamic loading functions
are required then run build-global.sh after a clean build
using the skeleton. This will fill out the skeleton with the
symbols to be available to dynamically loaded modules.
* libs/libc/modlib/modlib_loadhdrs.c
- Fix case where there are no program headers are avaiable
78 lines
1.3 KiB
ArmAsm
78 lines
1.3 KiB
ArmAsm
#ifdef __CYGWIN__
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# define SYMBOL(s) s
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# define WEAK .weak
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# define GLOBAL .global
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# define SECTION .data
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.macro GLOBAL ep
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.global SYMBOL(\ep)
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.type SYMBOL(\ep), "object"
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.endm
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.macro SIZE ep
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.endm
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#elif defined(__ELF__)
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# define SYMBOL(s) s
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# define WEAK .weak
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# define SECTION .data
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.macro GLOBAL ep
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.global SYMBOL(\ep)
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.type SYMBOL(\ep), "object"
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.endm
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.macro SIZE ep
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.size SYMBOL(\ep), . - SYMBOL(\ep)
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.endm
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#else
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# define SYMBOL(s) _##s
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# define WEAK .weak_definition
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# define SECTION .section __DATA,__data
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.macro GLOBAL ep
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.private_extern SYMBOL(\ep)
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.globl SYMBOL(\ep)
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.endm
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.macro SIZE ep
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.endm
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#endif
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#if __SIZEOF_POINTER__ == 8
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.macro globalEntry index, ep
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WEAK SYMBOL(\ep)
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.quad .l\index
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.quad \ep
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.endm
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# define ALIGN 8
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#else
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.macro globalEntry index, ep
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WEAK SYMBOL(\ep)
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.long .l\index
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.long \ep
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.endm
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# define ALIGN 4
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#endif
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#ifdef __ARM_ARCH_ISA_THUMB2
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# ifdef __ARM_ARCH_7M__
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.arch armv7e-m
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# elif defined ___ARM_ARCH 8
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.arch armv8-m.base
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#endif
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#ifdef __ARM_ASM_SYNTAX_UNIFIED__
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.syntax unified
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#endif
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.thumb
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#endif
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.data
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.align ALIGN
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GLOBAL globalNames
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SYMBOL(globalNames):
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SIZE globalNames
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.align ALIGN
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GLOBAL nGlobals
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SYMBOL(nGlobals):
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.word 0
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SIZE nGlobals
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.align ALIGN
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GLOBAL globalTable
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SYMBOL(globalTable):
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SIZE globalTable
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