gas: Skip SFrame FDE if CFI specifies non-FP/SP base register

Do not generate SFrame FDE if DWARF CFI directives .cfi_def_cfa or
.cfi_def_cfa_register specify a CFA base register number other than
the architecture-specific stack-pointer (SP) or frame-pointer (FP)
register numbers.

This also causes the assembler to print a warning message, so that
skipping of the SFrame FDE does not occur silently.

Update the generic ld SFrame test case to be architecture independent.
Do not use CFI directive .cfi_def_cfa, as the specified CFA base
register number is not a valid SP/FP register number on all
architectures. An invalid SP/FP register number will now cause the
assembler to print a warning message and skip SFrame FDE generation.
Remove the offending CFI directive, that cannot be coded architecture-
independent, as the test case requires SFrame information to be
generated. This was reported by the Linaro-TCWG-CI for AArch64.

gas/
	* gen-sframe.c: Skip SFrame generation if CFI specifies
	non-FP/SP base register.

ld/testsuite/
	* ld-sframe/discard.s: Update generic SFrame test case to be
	architecture independent.

Signed-off-by: Jens Remus <jremus@linux.ibm.com>

0 files changed, 0 insertions, 0 deletions