NAME

       function::register - Return the signed value of the named CPU register

SYNOPSIS

           register:long(name:string)

ARGUMENTS

       name
           Name of the register to return

DESCRIPTION

       Return the value of the named CPU register, as it was saved when the current probe point was hit. If the
       register is 32 bits, it is sign-extended to 64 bits.

       For the i386 architecture, the following names are recognized. (name1/name2 indicates that name1 and
       name2 are alternative names for the same register.) eax/ax, ebp/bp, ebx/bx, ecx/cx, edi/di, edx/dx,
       eflags/flags, eip/ip, esi/si, esp/sp, orig_eax/orig_ax, xcs/cs, xds/ds, xes/es, xfs/fs, xss/ss.

       For the x86_64 architecture, the following names are recognized: 64-bit registers: r8, r9, r10, r11, r12,
       r13, r14, r15, rax/ax, rbp/bp, rbx/bx, rcx/cx, rdi/di, rdx/dx, rip/ip, rsi/si, rsp/sp; 32-bit registers:
       eax, ebp, ebx, ecx, edx, edi, edx, eip, esi, esp, flags/eflags, orig_eax; segment registers: xcs/cs,
       xss/ss.

       For powerpc, the following names are recognized: r0, r1, ... r31, nip, msr, orig_gpr3, ctr, link, xer,
       ccr, softe, trap, dar, dsisr, result.

       For s390x, the following names are recognized: r0, r1, ... r15, args, psw.mask, psw.addr, orig_gpr2, ilc,
       trap.

       For AArch64, the following names are recognized: x0, x1, ... x30, fp, lr, sp, pc, and orig_x0.

SEE ALSO

       tapset::registers(3stap)

SystemTap Tapset Reference                         April 2016                          FUNCTION::REGISTER(3stap)