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lib/mbedtls_errors: Add code to patch mbedtls for shortened error strs.

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The file `mbedtls_errors/mp_mbedtls_errors.c` can be used instead of
`mbedtls/library/error.c` to give shorter error strings, reducing the build
size of the error strings from about 12-16kB down to about 2-5kB.
This commit is contained in:
Thorsten von Eicken
2020-05-29 13:05:47 -07:00
committed by Damien George
parent 98e583430f
commit 3e758ef235
9 changed files with 1008 additions and 0 deletions
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22
lib/mbedtls_errors/generate_errors.diff Normal file
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@@ -0,0 +1,22 @@
--- generate_errors_orig.pl 2020-06-20 08:40:38.819060379 -0700
+++ generate_errors.pl 2020-06-20 08:47:26.511163591 -0700
@@ -162,16 +162,12 @@
if ($error_name eq "MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE")
{
- ${$code_check} .= "${white_space}if( use_ret == -($error_name) )\n".
- "${white_space}\{\n".
- "${white_space} mbedtls_snprintf( buf, buflen, \"$module_name - $description\" );\n".
- "${white_space} return;\n".
- "${white_space}}\n"
+ # no-op, this case is hard-coded in error.fmt
}
else
{
- ${$code_check} .= "${white_space}if( use_ret == -($error_name) )\n".
- "${white_space} mbedtls_snprintf( buf, buflen, \"$module_name - $description\" );\n"
+ my $error_text = $error_name =~ s/^MBEDTLS_ERR_//r;
+ ${$code_check} .= "${white_space}{ -($error_name), \"$error_text\" },\n"
}
};