In commit:
3b7142752e4bee15 ("arm64: convert native/compat syscall entry to C")
... we moved the syscall invocation code from assembly to C, but left
behind a number of register aliases which are now unused.
Let's remove them before they confuse someone.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
mov sp, x19
.endm
-/*
- * These are the registers used in the syscall handler, and allow us to
- * have in theory up to 7 arguments to a function - x0 to x6.
- *
- * x7 is reserved for the system call number in 32-bit mode.
- */
-wsc_nr .req w25 // number of system calls
-xsc_nr .req x25 // number of system calls (zero-extended)
-wscno .req w26 // syscall number
-xscno .req x26 // syscall number (zero-extended)
-stbl .req x27 // syscall table pointer
+/* GPRs used by entry code */
tsk .req x28 // current thread_info
/*