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[PATCH v2 2/2] ld: Support the -exclude-symbols option via COFF def files, with the EXCLUDE_SYMBOLS keyword

Jan Beulich jbeulich@suse.com
Mon Jul 25 09:56:14 GMT 2022 
On 23.07.2022 00:02, Martin Storsjo wrote:
> This was requested in review.
> ---
> WIP: The testcase doesn't run successfully. How do I pass the
> full path to exclude-symbols-def.def as parameter to the ld command?

Without having tried but merely deriving from gas tests perhaps
${srcdir}/${subdir}/exclude-symbols-def.def. A few other ld test
cases look to have such or similar uses as well.

Jan

> ---
>  ld/deffilep.y                              |  3 +++
>  ld/testsuite/ld-pe/exclude-symbols-def.d   | 10 ++++++++++
>  ld/testsuite/ld-pe/exclude-symbols-def.def |  4 ++++
>  ld/testsuite/ld-pe/exclude-symbols-def.s   | 11 +++++++++++
>  ld/testsuite/ld-pe/pe.exp                  |  1 +
>  5 files changed, 29 insertions(+)
>  create mode 100644 ld/testsuite/ld-pe/exclude-symbols-def.d
>  create mode 100644 ld/testsuite/ld-pe/exclude-symbols-def.def
>  create mode 100644 ld/testsuite/ld-pe/exclude-symbols-def.s
> 
> diff --git a/ld/deffilep.y b/ld/deffilep.y
> index 126f33a1352..e8d31c6dae7 100644
> --- a/ld/deffilep.y
> +++ b/ld/deffilep.y
> @@ -249,6 +249,7 @@ keyword_as_name: BASE { $$ = "BASE"; }
>  	 | DATAL { $$ = "data"; }
>  	 | DESCRIPTION { $$ = "DESCRIPTION"; }
>  	 | DIRECTIVE { $$ = "DIRECTIVE"; }
> +	 | EXCLUDE_SYMBOLS { $$ = "EXCLUDE_SYMBOLS"; }
>  	 | EXECUTE { $$ = "EXECUTE"; }
>  	 | EXPORTS { $$ = "EXPORTS"; }
>  	 | HEAPSIZE { $$ = "HEAPSIZE"; }
> @@ -337,6 +338,7 @@ anylang_id: ID		{ $$ = $1; }
>  
>  symbol_list:
>  	anylang_id { def_exclude_symbols ($1); }
> +	|	symbol_list anylang_id { def_exclude_symbols ($2); }
>  	|	symbol_list ',' anylang_id { def_exclude_symbols ($3); }
>  	;
>  
> @@ -1355,6 +1357,7 @@ tokens[] =
>    { "data", DATAL },
>    { "DESCRIPTION", DESCRIPTION },
>    { "DIRECTIVE", DIRECTIVE },
> +  { "EXCLUDE_SYMBOLS", EXCLUDE_SYMBOLS },
>    { "EXECUTE", EXECUTE },
>    { "EXPORTS", EXPORTS },
>    { "HEAPSIZE", HEAPSIZE },
> diff --git a/ld/testsuite/ld-pe/exclude-symbols-def.d b/ld/testsuite/ld-pe/exclude-symbols-def.d
> new file mode 100644
> index 00000000000..4582d03c670
> --- /dev/null
> +++ b/ld/testsuite/ld-pe/exclude-symbols-def.d
> @@ -0,0 +1,10 @@
> +#source: exclude-symbols-def.s
> +#target: i*86-*-cygwin* i*86-*-pe i*86-*-mingw*
> +#ld: -shared exclude-symbols-def.def
> +#objdump: -p
> +
> +#...
> +.*\[[ 	]*0\] sym1
> +.*\[[ 	]*1\] sym3
> +.*\[[ 	]*2\] sym5
> +#pass
> diff --git a/ld/testsuite/ld-pe/exclude-symbols-def.def b/ld/testsuite/ld-pe/exclude-symbols-def.def
> new file mode 100644
> index 00000000000..c0cee7b1e70
> --- /dev/null
> +++ b/ld/testsuite/ld-pe/exclude-symbols-def.def
> @@ -0,0 +1,4 @@
> +LIBRARY exclude-symbols-def.dll
> +EXCLUDE_SYMBOLS
> +sym2
> +sym4
> diff --git a/ld/testsuite/ld-pe/exclude-symbols-def.s b/ld/testsuite/ld-pe/exclude-symbols-def.s
> new file mode 100644
> index 00000000000..fd533bb44c9
> --- /dev/null
> +++ b/ld/testsuite/ld-pe/exclude-symbols-def.s
> @@ -0,0 +1,11 @@
> +.global _sym1
> +.global _sym2
> +.global _sym3
> +.global _sym4
> +.global _sym5
> +_sym1:
> +_sym2:
> +_sym3:
> +_sym4:
> +_sym5:
> +  ret
> diff --git a/ld/testsuite/ld-pe/pe.exp b/ld/testsuite/ld-pe/pe.exp
> index 8dfdd0cc16e..45b16f843ac 100644
> --- a/ld/testsuite/ld-pe/pe.exp
> +++ b/ld/testsuite/ld-pe/pe.exp
> @@ -126,3 +126,4 @@ setup_xfail mcore-*-pe
>  run_ld_link_tests $foreign_sym_test
>  
>  run_dump_test "exclude-symbols-embedded"
> +run_dump_test "exclude-symbols-def"
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