diff options
| author | Johannes Berg | 2021-01-13 22:07:41 +0100 |
|---|---|---|
| committer | Richard Weinberger | 2021-02-12 21:30:19 +0100 |
| commit | e1e22d0d9183aaaf65acf0cb529cb51ddbc12e08 (patch) | |
| tree | b3951b1d0a1bb8432b9a32a03a7c2cd7a28ec71b /arch/um | |
| parent | a15f1e41fbf59d987365018d7439f24aa5801269 (diff) | |
um: print register names in wait_for_stub
Since we're basically debugging the userspace (it runs in ptrace)
it's useful to dump out the registers - but they're not readable,
so if something goes wrong it's hard to say what. Print the names
of registers in the register dump so it's easier to look at.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/os-Linux/skas/process.c | 55 |
1 files changed, 53 insertions, 2 deletions
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index 0621d521208e..ed4bbffe8d7a 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -28,6 +28,54 @@ int is_skas_winch(int pid, int fd, void *data) return pid == getpgrp(); } +static const char *ptrace_reg_name(int idx) +{ +#define R(n) case HOST_##n: return #n + + switch (idx) { +#ifdef __x86_64__ + R(BX); + R(CX); + R(DI); + R(SI); + R(DX); + R(BP); + R(AX); + R(R8); + R(R9); + R(R10); + R(R11); + R(R12); + R(R13); + R(R14); + R(R15); + R(ORIG_AX); + R(CS); + R(SS); + R(EFLAGS); +#elif defined(__i386__) + R(IP); + R(SP); + R(EFLAGS); + R(AX); + R(BX); + R(CX); + R(DX); + R(SI); + R(DI); + R(BP); + R(CS); + R(SS); + R(DS); + R(FS); + R(ES); + R(GS); + R(ORIG_AX); +#endif + } + return ""; +} + static int ptrace_dump_regs(int pid) { unsigned long regs[MAX_REG_NR]; @@ -37,8 +85,11 @@ static int ptrace_dump_regs(int pid) return -errno; printk(UM_KERN_ERR "Stub registers -\n"); - for (i = 0; i < ARRAY_SIZE(regs); i++) - printk(UM_KERN_ERR "\t%d - %lx\n", i, regs[i]); + for (i = 0; i < ARRAY_SIZE(regs); i++) { + const char *regname = ptrace_reg_name(i); + + printk(UM_KERN_ERR "\t%s\t(%2d): %lx\n", regname, i, regs[i]); + } return 0; } |