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author | Indu Bhagat <indu.bhagat@oracle.com> | 2022-12-16 22:02:07 -0800 |
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committer | Indu Bhagat <indu.bhagat@oracle.com> | 2022-12-16 22:02:07 -0800 |
commit | 5bec250b5a9257133f70098dced98dfe59c77401 (patch) | |
tree | bb8771b17bfde8ff639ad1453b15345f0ce627c0 /gas | |
parent | 49948bce0e9e310ea1506e84755a1cf9fdba8840 (diff) | |
download | gdb-5bec250b5a9257133f70098dced98dfe59c77401.zip gdb-5bec250b5a9257133f70098dced98dfe59c77401.tar.gz gdb-5bec250b5a9257133f70098dced98dfe59c77401.tar.bz2 |
gas: sframe: testsuite: add testcase for .cfi_negate_ra_state
Add a new test to check that .cfi_negate_ra_state on aarch64 is handled
well (a non-empty SFrame section with valid SFrame FREs is generated).
ChangeLog:
* testsuite/gas/cfi-sframe/cfi-sframe-aarch64-2.d: New test.
* testsuite/gas/cfi-sframe/cfi-sframe-aarch64-2.s: Likewise.
* testsuite/gas/cfi-sframe/cfi-sframe.exp: Adjust the list
accordingly.
Diffstat (limited to 'gas')
-rw-r--r-- | gas/testsuite/gas/cfi-sframe/cfi-sframe-aarch64-2.d | 20 | ||||
-rw-r--r-- | gas/testsuite/gas/cfi-sframe/cfi-sframe-aarch64-2.s | 18 | ||||
-rw-r--r-- | gas/testsuite/gas/cfi-sframe/cfi-sframe.exp | 1 |
3 files changed, 39 insertions, 0 deletions
diff --git a/gas/testsuite/gas/cfi-sframe/cfi-sframe-aarch64-2.d b/gas/testsuite/gas/cfi-sframe/cfi-sframe-aarch64-2.d new file mode 100644 index 0000000..985f51f --- /dev/null +++ b/gas/testsuite/gas/cfi-sframe/cfi-sframe-aarch64-2.d @@ -0,0 +1,20 @@ +#as: --gsframe +#objdump: --sframe=.sframe +#name: SFrame cfi_negate_ra_state test +#... +Contents of the SFrame section .sframe: + + Header : + + Version: SFRAME_VERSION_1 + Flags: NONE + Num FDEs: 1 + Num FREs: 2 + + Function Index : + func idx \[0\]: pc = 0x0, size = 8 bytes + STARTPC + CFA + FP + RA + +#... + 0+0004 +sp\+16 +u +u\[s\] + + +#pass diff --git a/gas/testsuite/gas/cfi-sframe/cfi-sframe-aarch64-2.s b/gas/testsuite/gas/cfi-sframe/cfi-sframe-aarch64-2.s new file mode 100644 index 0000000..8106c93 --- /dev/null +++ b/gas/testsuite/gas/cfi-sframe/cfi-sframe-aarch64-2.s @@ -0,0 +1,18 @@ +## ARMv8.3 addded support a new security feature named Pointer Authentication. The +## main idea behind this is to use the unused bits in the pointer values. +## Each pointer is patched with a PAC before writing to memory, and is verified +## before using it. +## When the pointers are mangled, the unwinder needs to know so it can mask off +## the PAC from the pointer value to recover the return address, and +## conversely, skip doing so if the pointers are not mangled. +## +## .cfi_negate_ra_state CFI directive is used to convey this information. +## +## SFrame has support for this. This testcase ensures that the directive +## is interpreted successfully. + .cfi_startproc + .long 0 + .cfi_def_cfa_offset 16 + .cfi_negate_ra_state + .long 0 + .cfi_endproc diff --git a/gas/testsuite/gas/cfi-sframe/cfi-sframe.exp b/gas/testsuite/gas/cfi-sframe/cfi-sframe.exp index 8129e86..f001fad 100644 --- a/gas/testsuite/gas/cfi-sframe/cfi-sframe.exp +++ b/gas/testsuite/gas/cfi-sframe/cfi-sframe.exp @@ -96,4 +96,5 @@ if { [istarget "x86_64-*-*"] && [gas_sframe_check] } then { # aarch64 specific tests if { [istarget "aarch64*-*-*"] && [gas_sframe_check] } then { run_dump_test "cfi-sframe-aarch64-1" + run_dump_test "cfi-sframe-aarch64-2" } |