193 lines
4.1 KiB
Bash
Executable File
193 lines
4.1 KiB
Bash
Executable File
#!/bin/bash
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#
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# Script to create modlib_global.S which contains a structure define
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# the API names and addresses we will export for resolving symbols in
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# dynamic loaded shared objects. Typically these are libc APIs.
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#
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# Find an entrypoint using a binary search
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#
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findep()
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{
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CHECK=$1
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SIZE=${#SYM[@]}
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L=0
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R=$((SIZE - 1))
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OLDL=99999999
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OLDR=99999999
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while [ ${L} -le ${R} ]
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do
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T=$(( L + R ))
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M=$(( T / 2 ))
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N=$(( T % 2 ))
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M=$(( M - N ))
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if [ ${SYM[${M}]} \< ${CHECK} ]; then
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L=$(( M + 1 ))
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elif [ ${SYM[${M}]} = ${CHECK} ]; then
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return 1
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else
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R=$(( M - 1 ))
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fi
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if [ ${OLDL} -eq ${L} -a ${OLDR} -eq ${R} ]; then
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: return 0
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fi
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OLDL=${L}
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OLDR=${R}
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done
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return 0
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}
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#
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# Extract entrypoints from a library after applying a filter to
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# exclude those we aren't interested in.
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#
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getEP()
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{
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for ((i = 0; i < ${#OBJ[@]}; i++))
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do
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if [ -f staging/${OBJ[$i]} ]; then
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FUNCS=`${NM} -g --defined-only staging/${OBJ[$i]} 2>/dev/null | grep "^0" | awk '{print $3}' | sort | grep -Ev ${FILTER}`
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FUNC=(${FUNCS})
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for ((j = 0; j < ${#FUNC[@]}; j++))
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do
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findep ${FUNC[$j]}
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if [ $? -eq 1 ]; then
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EP[${I_EP}]=${FUNC[$j]}
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I_EP=$((I_EP + 1))
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fi
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done
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fi
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done
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}
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#
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# Symbols to ignore within the NuttX libraries
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#
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FILTER="^lib_low|^FUNCTION|^STUB|^__start|^_vect|^arm_|^arp_|^bch|^binfmt|^blake|^block_|^cdcacm|^chksum|^clock_|^close_|^crypto_|^devif_|^devnull|^devuran|^devzero|^emerg|^epoll_|^elf_|^_dbgR|^dq_|^env_|^file_|^files_|^fs_|^ftl_|^g_|^get_|^group_|^global|^hcom|^i2c_|^inode_|^iob_|^irq_|^kmm_|^lfs_|^lib_|^local_|^mm_|^modlib_|^mpu_|^mq_|^nglobals|^net_|^netdev_|^nx|^pipecommon|^posix_spawn_file|^psock_|^ramlog|^rammap|^readline_|^register_|^sched_|^sockfd|^spawn_|^sq_|^stm32|^symtab_|^syslog_|^syslogstream|^task_|^tcp_|^timer_|^uart_|^ub[12]|^udp_|^umm_|^umount|^unload_|^unregister|^up_|^usb|^usrsock_|^watchdog|^wd_|globalNames$|nglobals$|global_table$|^\.l"
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if [ -z "${NM}" ]; then
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NM="nm"
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fi
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#
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# Extract symbols from the runtime
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#
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SYMS=`cat System.map | awk '{print $3}' | sort | grep -Ev ${FILTER}`
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SYM=(${SYMS})
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GLOBALS="libs/libc/modlib/modlib_globals.S"
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I_EP=0
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#
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# Libraries to be searched
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#
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OBJS="libsched.a libdrivers.a libconfigs.a libstubs.a libkc.a libkmm.a libkarch.a libpass1.a libnet.a libcrypto.a libfs.a libbinfmt.a libxx.a libuc.a libumm.a libuarch.a libapps.a"
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OBJ=(${OBJS})
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#
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# Perform the extraction from the libraries
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#
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getEP
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EPS=`printf '%s\n' "${EP[@]}" | sort -u`
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EP=(${EPS})
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#
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# Generate the modlib_xxxx_globals.S file
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#
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cat >${GLOBALS} <<__EOF__
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#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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__EOF__
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for ((i = 0; i < ${#EP[@]}; i++))
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do
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echo ".l${i}: .string \"${EP[$i]}\"" >>${GLOBALS}
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done
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cat >>${GLOBALS} <<__EOF__
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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 ${#EP[@]}
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SIZE nglobals
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.align ALIGN
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GLOBAL global_table
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SYMBOL(global_table):
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__EOF__
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for ((i = 0; i < ${#EP[@]}; i++))
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do
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echo " globalEntry ${i}, ${EP[$i]}" >>${GLOBALS}
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done
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cat >>${GLOBALS} <<__EOF__
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SIZE global_table
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__EOF__
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echo "${#EP[@]} symbols defined"
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