From 1222445a5bf622b37a9bb16c7ad0148e2a21eb0d Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Fri, 20 Jan 2023 12:08:53 -0800 Subject: [PATCH] libbpf: Complete mips spec in bpf_tracing.h Add registers for PARM6 through PARM8. Add a link to an ABI. We don't distinguish between O32, N32, and N64, so document that we assume N64 right now. Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20230120200914.3008030-5-andrii@kernel.org --- tools/lib/bpf/bpf_tracing.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h index a263f600e309..f356955b059a 100644 --- a/tools/lib/bpf/bpf_tracing.h +++ b/tools/lib/bpf/bpf_tracing.h @@ -201,11 +201,19 @@ struct pt_regs___arm64 { #elif defined(bpf_target_mips) +/* + * N64 ABI is assumed right now. + * https://en.wikipedia.org/wiki/MIPS_architecture#Calling_conventions + */ + #define __PT_PARM1_REG regs[4] #define __PT_PARM2_REG regs[5] #define __PT_PARM3_REG regs[6] #define __PT_PARM4_REG regs[7] #define __PT_PARM5_REG regs[8] +#define __PT_PARM6_REG regs[9] +#define __PT_PARM7_REG regs[10] +#define __PT_PARM8_REG regs[11] #define __PT_RET_REG regs[31] #define __PT_FP_REG regs[30] /* Works only with CONFIG_FRAME_POINTER */ #define __PT_RC_REG regs[2]