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Nelson Chu 39ff0b8123 RISC-V: Report warning when linking the objects with different priv specs.
We do know some conflicts among different privileged specs.  For linker,
the safest approach is that don't allow the object linked with others which
may cause conflicts.  But this may cause inconvenience since not all objects
with conflicting priv specs are linked will cause problems.  But it is hard
to know the detailed conflict cases for linker, so we probably need a option
to tell linker that we do know there are no conflicts, or we are willing to
take risks to link the objects with conflicted priv specs.  But the option
is still under discussion.

Therefore, we can report warnings rather than errors when linking the objects
with conflicted priv specs.  This not only makes the linker more flexible,
but also warns people that the conflicts may happen.  We also need to update
the output priv spec version once the input priv spec is newer.

	bfd/
	* elfxx-riscv.c (struct priv_spec_t priv_specs[]): Move them from
	opcodes/riscv-opc.c to bfd/elfxx-riscv.c, since we need it in linker.
	(riscv_get_priv_spec_class): Likewise.
	(riscv_get_priv_spec_name): Likewise.
	(riscv_get_priv_spec_class_from_numbers): New function, convert
	the version numbers into string, then call riscv_get_priv_spec_class
	to get the priv spec class.
	* elfxx-riscv.h (riscv_get_priv_spec_class): Move forward declaration
	from include/opcode/riscv.h to bfd/elfxx-riscv.h.
	(riscv_get_priv_spec_name): Likewise.
	(riscv_get_priv_spec_class_from_numbers): New forward declaration.
	(opcode/riscv.h): Include it in the header rather than elfxx-riscv.c.
	* elfnn-riscv.c (riscv_merge_attributes):  Get the priv spec classes
	of input and output objects form their priv spec attributes by
	riscv_get_priv_spec_class_from_numbers.  Report warning rather than
	errors when linking objects with differnet priv spec versions.  We do
	know v1.9.1 may have conflicts to other versions, so report the
	warning, too.  After that, update the output priv spec version to the
	newest one so far.

	gas/
	* config/tc-riscv.c (buf_size, buf): Remove the unused variables.
	(riscv_set_default_priv_spec): Get the priv spec version from the
	priv spec attributes by riscv_get_priv_spec_class_from_numbers.

	include/
	* opcode/riscv.h (riscv_get_priv_spec_class): Move the function
	forward declarations to bfd/elfxx-riscv.h.
	(riscv_get_priv_spec_name): Likewise.

	opcodes/
	* riscv-opc.c: Move the structures and functions to bfd/elfxx-riscv.c.
	* riscv-dis.c: Include elfxx-riscv.h.

	ld/
	* testsuite/ld-riscv-elf/attr-merge-priv-spec-failed-01.d: Updated.
	* testsuite/ld-riscv-elf/attr-merge-priv-spec-failed-02.d: Updated.
	* testsuite/ld-riscv-elf/attr-merge-priv-spec-failed-03.d: Updated.
	* testsuite/ld-riscv-elf/attr-merge-priv-spec-failed-04.d: Updated.
	* testsuite/ld-riscv-elf/attr-merge-priv-spec-failed-05.d: Updated.
	* testsuite/ld-riscv-elf/attr-merge-priv-spec-failed-06.d: Updated.
2020-06-22 10:01:14 +08:00
bfd RISC-V: Report warning when linking the objects with different priv specs. 2020-06-22 10:01:14 +08:00
binutils Emit a warning when -z relro is unsupported 2020-06-19 09:50:20 +09:30
config Sync config with GCC 2020-05-16 06:07:12 -07:00
contrib contrib: Update dg-extract-results.* from gcc 2020-05-15 11:41:22 +01:00
cpu cpu,gas,opcodes: remove no longer needed workaround from the BPF port 2020-06-04 16:17:42 +02:00
elfcpp [PATCH] gold: Set DF_1_PIE for -pie 2020-06-18 10:46:18 +01:00
etc
gas RISC-V: Report warning when linking the objects with different priv specs. 2020-06-22 10:01:14 +08:00
gdb Various procfs.c cleanups 2020-06-21 18:51:58 +02:00
gdbserver gdb, gdbserver: remove ARM regdat files 2020-06-17 14:42:53 -04:00
gdbsupport gdbsupport: Drop now unused function 'stringify_argv' 2020-05-25 11:40:35 -04:00
gnulib
gold [PATCH] gold: Set DF_1_PIE for -pie 2020-06-18 10:46:18 +01:00
gprof Replace "if (x) free (x)" with "free (x)", gprof 2020-05-21 10:45:33 +09:30
include RISC-V: Report warning when linking the objects with different priv specs. 2020-06-22 10:01:14 +08:00
intl
ld RISC-V: Report warning when linking the objects with different priv specs. 2020-06-22 10:01:14 +08:00
libctf
libdecnumber
libiberty Sync config and libiberty with GCC 2020-05-12 18:37:03 -07:00
opcodes RISC-V: Report warning when linking the objects with different priv specs. 2020-06-22 10:01:14 +08:00
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
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	./configure 
	make

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	make install

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	make

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