libbpf now has macros to access syscall arguments in an architecture-agnostic manner, but unfortunately they have a number of issues on non-Intel arches, which this series aims to fix. v1: https://lore.kernel.org/bpf/20220201234200.1836443-1-iii@xxxxxxxxxxxxx/ v1 -> v2: * Put orig_gpr2 in place of args[1] on s390 (Vasily). * Fix arm64, powerpc and riscv (Heiko). v2: https://lore.kernel.org/bpf/20220204041955.1958263-1-iii@xxxxxxxxxxxxx/ v2 -> v3: * Undo args[1] change (Andrii). * Rename PT_REGS_SYSCALL to PT_REGS_SYSCALL_REGS (Andrii). * Split the riscv patch (Andrii). +cc Naveen. Ilya Leoshkevich (11): arm64/bpf: Add orig_x0 to user_pt_regs s390/bpf: Add orig_gpr2 to user_pt_regs selftests/bpf: Fix an endianness issue in bpf_syscall_macro test libbpf: Add __PT_PARM1_REG_SYSCALL macro libbpf: Add PT_REGS_SYSCALL_REGS macro selftests/bpf: Use PT_REGS_SYSCALL_REGS in bpf_syscall_macro libbpf: Fix accessing the first syscall argument on arm64 libbpf: Fix accessing syscall arguments on powerpc libbpf: Fix accessing program counter on riscv libbpf: Fix accessing syscall arguments on riscv libbpf: Fix accessing the first syscall argument on s390 arch/arm64/include/asm/ptrace.h | 2 +- arch/arm64/include/uapi/asm/ptrace.h | 1 + arch/s390/include/asm/ptrace.h | 2 +- arch/s390/include/uapi/asm/ptrace.h | 1 + tools/lib/bpf/bpf_tracing.h | 23 ++++++++++++++++++- .../selftests/bpf/progs/bpf_syscall_macro.c | 7 ++++-- 6 files changed, 31 insertions(+), 5 deletions(-) -- 2.34.1
