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This commit applies all changes made after running the gdb/copyright.py
script.
Note that one file was flagged by the script, due to an invalid
copyright header
(gdb/unittests/basic_string_view/element_access/char/empty.cc).
As the file was copied from GCC's libstdc++-v3 testsuite, this commit
leaves this file untouched for the time being; a patch to fix the header
was sent to gcc-patches first.
gdb/ChangeLog:
Update copyright year range in all GDB files.
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Adds riscv_linux_nat_target::read_description method to find a
suitable target description for the native linux target we are running
on.
Currently this will supply a suitably sized set of x-registers, and
will probe the kernel to see if the f-registers are readable. If they
are readable then we currently assume that the f-registers are the
same size as the x-registers as I don't know of a good way to probe
the f-register length. This will obviously need fixing in future.
As of Linux 4.19 there is no ptrace support for reading the
f-registers, this should appear in 4.20, so right now we only return
target descriptions without f-registers.
gdb/ChangeLog:
* riscv-linux-nat.c: Add 'inferior.h' and 'target-descriptions.h'
header files.
(riscv_linux_nat_target::read_description): New method.
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In this commit:
commit ee67fd7f3f6ca78eede2862e309c0bcf266bbd7e
Date: Thu Oct 25 12:03:31 2018 +0100
gdb/riscv: Use correct regnum in riscv_linux_nat_target::fetch_registers
I incorrectly removed a set of braces in violation of the GDB coding
standard. This commit adds them back.
gdb/ChangeLog:
* riscv-linux-nat.c (riscv_linux_nat_target::fetch_registers):
Add missing braces. No functional change.
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In riscv_linux_nat_target::fetch_registers, if we are asked to supply
all registers (regnum parameter is -1), then we currently end up
calling regcache::raw_supply_zeroed with the regnum -1, which is
invalid. Instead we should be passing the regnum of the specific
register we wish to supply zeroed, in this case RISCV_CSR_MISA_REGNUM.
I removed the extra { ... } block in line with the coding standard
while editing this area.
gdb/ChangeLog:
* riscv-linux-nat.c (riscv_linux_nat_target::fetch_registers):
Pass correct regnum to raw_supply_zeroed.
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The linux kernel uses NT_PRFPREG. Glibc before BZ 14890 defines NT_FPREGSET.
After it defines both. Avoid glibc version dependency by using the gdb header
file instead of the glibc header file, and the macro name that gdb defines
which is NT_FPREGSET.
gdb/
* riscv-linux-nat.c: Include elf/common.h instead of elf.h.
(riscv_linux_nat_target::fetch_registers): Use NT_FPREGSET instead
of NT_PRFPREG.
(riscv_linux_nat_target::store_registers): Likewise.
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Add initial native support for riscv*-linux*.
gdb/
* riscv-linux-nat.c: New file.
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