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path: root/arch/riscv/kernel/stacktrace.c
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2018-04-03riscv/ftrace: Add HAVE_FUNCTION_GRAPH_RET_ADDR_PTR supportAlan Kao1-0/+6
In walk_stackframe, the pc now receives the address from calling ftrace_graph_ret_addr instead of manual calculation. Note that the original calculation, pc = frame->ra - 4 is buggy when the instruction at the return address happened to be a compressed inst. But since it is not a critical part of ftrace, it is ignored for now to ease the review process. Cc: Greentime Hu <greentime@andestech.com> Signed-off-by: Alan Kao <alankao@andestech.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2017-09-27RISC-V: Generic library routines and assemblyPalmer Dabbelt1-0/+177
This patch contains code that is more specific to the RISC-V ISA than it is to Linux. It contains string and math operations, C wrappers for various assembly instructions, stack walking code, and uaccess. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>