72 lines
1.1 KiB
Bash
72 lines
1.1 KiB
Bash
#!/bin/sh -
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random_uniform() {
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local _upper_bound
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if [[ $1 -gt 0 ]]; then
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_upper_bound=$(($1 - 1))
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else
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_upper_bound=0
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fi
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echo `jot -r 1 0 $_upper_bound 2>/dev/null`
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}
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umask 007
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PAGE_SIZE=`sysctl -n hw.pagesize`
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PAD=$1
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GAPDUMMY=$2
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RANDOM1=`random_uniform $((3 * PAGE_SIZE))`
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RANDOM2=`random_uniform $PAGE_SIZE`
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RANDOM3=`random_uniform $PAGE_SIZE`
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RANDOM4=`random_uniform $PAGE_SIZE`
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RANDOM5=`random_uniform $PAGE_SIZE`
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cat > gap.link << __EOF__
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PHDRS {
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text PT_LOAD FILEHDR PHDRS;
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rodata PT_LOAD;
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data PT_LOAD;
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bss PT_LOAD;
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}
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SECTIONS {
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.text : ALIGN($PAGE_SIZE) {
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LONG($PAD);
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. += $RANDOM1;
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. = ALIGN($PAGE_SIZE);
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endboot = .;
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PROVIDE (endboot = .);
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. = ALIGN($PAGE_SIZE);
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. += $RANDOM2;
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. = ALIGN(16);
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*(.text .text.*)
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} :text =$PAD
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.rodata : {
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LONG($PAD);
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. += $RANDOM3;
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. = ALIGN(16);
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*(.rodata .rodata.*)
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} :rodata =$PAD
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.data : {
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LONG($PAD);
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. = . + $RANDOM4; /* fragment of page */
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. = ALIGN(16);
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*(.data .data.*)
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} :data =$PAD
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.bss : {
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. = . + $RANDOM5; /* fragment of page */
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. = ALIGN(16);
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*(.bss .bss.*)
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} :bss
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}
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__EOF__
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$LD $LDFLAGS -r gap.link $GAPDUMMY -o gap.o
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