Commit 76fc52bd authored Jul 05, 2018 by Mark Rutland Committed by Will Deacon Jul 05, 2018

arm64: ptrace: map SPSR_ELx<->PSR for compat tasks



The SPSR_ELx format for exceptions taken from AArch32 is slightly
different to the AArch32 PSR format.

Map between the two in the compat ptrace code.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Fixes: 7206dc93 ("arm64: Expose Arm v8.4 features")
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Suzuki Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

parent 25dc2c80

arch/arm64/kernel/ptrace.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1076,6 +1076,7 @@ static int compat_gpr_get(struct task_struct *target,
		break;
		case 16:
		reg = task_pt_regs(target)->pstate;
		reg = pstate_to_compat_psr(reg);
		break;
		case 17:
		reg = task_pt_regs(target)->orig_x0;
		@@ -1143,6 +1144,7 @@ static int compat_gpr_set(struct task_struct *target,
		newregs.pc = reg;
		break;
		case 16:
		reg = compat_psr_to_pstate(reg);
		newregs.pstate = reg;
		break;
		case 17: