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ads2gas: Add a -noelf option

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This allows skipping elf specific features from the output.

Change-Id: I739299ba41286ca10415e056b4ffd561be5e0350
This commit is contained in:
Martin Storsjo 2018-03-21 14:09:04 +02:00
parent c13aaf7a3e
commit 2cc5c8f97c
1 changed files with 18 additions and 7 deletions
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25
build/make/ads2gas.pl
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@ -23,9 +23,11 @@ use lib $FindBin::Bin;
use thumb;
my $thumb = 0;
my $elf = 1;
foreach my $arg (@ARGV) {
$thumb = 1 if ($arg eq "-thumb");
$elf = 0 if ($arg eq "-noelf");
}
print "@ This file was created from a .asm file\n";
@ -140,7 +142,11 @@ while (<STDIN>)
# Make function visible to linker, and make additional symbol with
# prepended underscore
s/EXPORT\s+\|([\$\w]*)\|/.global $1 \n\t.type $1, function/;
if ($elf) {
s/EXPORT\s+\|([\$\w]*)\|/.global $1 \n\t.type $1, function/;
} else {
s/EXPORT\s+\|([\$\w]*)\|/.global $1/;
}
s/IMPORT\s+\|([\$\w]*)\|/.global $1/;
s/EXPORT\s+([\$\w]*)/.global $1/;
@ -181,11 +187,16 @@ while (<STDIN>)
# eabi_attributes numerical equivalents can be found in the
# "ARM IHI 0045C" document.
# REQUIRE8 Stack is required to be 8-byte aligned
s/\sREQUIRE8/.eabi_attribute 24, 1 \@Tag_ABI_align_needed/g;
if ($elf) {
# REQUIRE8 Stack is required to be 8-byte aligned
s/\sREQUIRE8/.eabi_attribute 24, 1 \@Tag_ABI_align_needed/g;
# PRESERVE8 Stack 8-byte align is preserved
s/\sPRESERVE8/.eabi_attribute 25, 1 \@Tag_ABI_align_preserved/g;
# PRESERVE8 Stack 8-byte align is preserved
s/\sPRESERVE8/.eabi_attribute 25, 1 \@Tag_ABI_align_preserved/g;
} else {
s/\sREQUIRE8//;
s/\sPRESERVE8//;
}
# Use PROC and ENDP to give the symbols a .size directive.
# This makes them show up properly in debugging tools like gdb and valgrind.
@ -202,7 +213,7 @@ while (<STDIN>)
my $proc;
s/\bENDP\b/@ $&/;
$proc = pop(@proc_stack);
$_ = "\t.size $proc, .-$proc".$_ if ($proc);
$_ = "\t.size $proc, .-$proc".$_ if ($proc and $elf);
}
# EQU directive
@ -225,4 +236,4 @@ while (<STDIN>)
}
# Mark that this object doesn't need an executable stack.
printf ("\t.section\t.note.GNU-stack,\"\",\%\%progbits\n");
printf ("\t.section\t.note.GNU-stack,\"\",\%\%progbits\n") if $elf;