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riscvarchive / riscv-qemu

QEMU with RISC-V (RV64G, RV32G) Emulation Support
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Gdb support v2 #182

Closed jim-wilson closed 5 years ago

jim-wilson commented 5 years ago

The FSF GDB port now has proper target description support, aka XML register set files. This patch copies the FSF GDB xml files into qemu to replace my temporary files. It also adds the 32-bit support and the CSR support that was missing in my first part patch.

There is one odd thing here which is that the CSR xml file lists them in documentation order not numerical order, and has both v1.9.1 and v1.10 priv spec numbers. I suspect it was generated from a binutils header file. I had to clean up the existing list of CSRs to include all of the ones that GDB expects, and I had to add a table to map the CSR xml register numbers to the hardware register numbers. This table is a little awkward. If this file changes in a future gdb version, then we will need corresponding qemu changes to match.

jim-wilson commented 5 years ago

The first part patch is pull request #160.

jim-wilson commented 5 years ago

Submitted upstream.

jim-wilson commented 5 years ago

The gdb stub support is in upstream qemu now.