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arm64: add PTRACE_SYSEMU{,SINGLESTEP} definations to uapi headers

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x86 and um use 31 and 32 for PTRACE_SYSEMU and PTRACE_SYSEMU_SINGLESTEP
while powerpc uses different value maybe for legacy reasons.

Though handling of PTRACE_SYSEMU can be made architecture independent,
it's hard to make these definations generic. To add to this existing
mess few architectures like arm, c6x and sh use 31 for PTRACE_GETFDPIC
(get the ELF fdpic loadmap address). It's not possible to move the
definations to generic headers.

So we unfortunately have to duplicate the same defination to ARM64 if
we need to support PTRACE_SYSEMU and PTRACE_SYSEMU_SINGLESTEP.

Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Sudeep Holla 2019-05-23 10:06:17 +01:00 committed by Catalin Marinas
parent 15532fd6f5
commit fd3866381b
1 changed files with 3 additions and 0 deletions
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arch/arm64/include/uapi/asm/ptrace.h
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@ -62,6 +62,9 @@
#define PSR_x 0x0000ff00 /* Extension */
#define PSR_c 0x000000ff /* Control */
/* syscall emulation path in ptrace */
#define PTRACE_SYSEMU 31
#define PTRACE_SYSEMU_SINGLESTEP 32
#ifndef __ASSEMBLY__