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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 <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230120200914.3008030-5-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2023-01-20 12:08:53 -08:00 committed by Daniel Borkmann
parent 1dac40ac87
commit 1222445a5b
1 changed files with 8 additions and 0 deletions
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8
tools/lib/bpf/bpf_tracing.h
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@ -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]