gdb/testsuite: Filter out some registers for riscv
On riscv the cycle counter, and instructions retired counter CSRs are read only, this causes problems in the gdb.base/callfuncs.exp test, as the values in these CSRs change after an inferior call, the check that no target registers have been modified then fails. Luckily the test already has a mechanism in place for filtering out registers that are modified (and can't be restored) by an inferior call, so this commit adds the problem registers into this list for riscv. In the future we may end up needing to filter out more CSRs, but right now, for the targets I have access too, these are the only ones causing problems. gdb/testsuite/ChangeLog: * gdb.base/callfuncs.exp (fetch_all_registers): Add riscv register filter pattern.
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2018-05-03 Andrew Burgess <andrew.burgess@embecosm.com>
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* gdb.base/callfuncs.exp (fetch_all_registers): Add riscv register
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filter pattern.
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2018-05-02 Pedro Alves <palves@redhat.com>
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* gdb.base/breakpoint-in-ro-region.exp: Adjust to to_resume and
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@ -285,6 +285,16 @@ proc fetch_all_registers {test} {
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}
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exp_continue
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}
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-re "^\(?:cycle\|instret\)\[ \t\]+\[^\r\n\]+\r\n" {
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if [istarget "riscv*-*-*"] {
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# Filter out the cycle counter and instructions
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# retired counter CSRs which are read-only, giving
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# spurious differences.
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} else {
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lappend all_registers_lines $expect_out(0,string)
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}
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exp_continue
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}
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-re "^\[^ \t\]+\[ \t\]+\[^\r\n\]+\r\n" {
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lappend all_registers_lines $expect_out(0,string)
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exp_continue
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