FUNCTION::REGISTER(3stap) Context Functions FUNCTION::REGISTER(3stap)

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, origeax/origax, xcs/cs, xds/ds,
       xes/es, xfs/fs, xss/ss.

       For the x8664 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, origeax; segment registers: xcs/cs, xss/ss.

       For powerpc, the following names are recognized: r0, r1, ... r31, nip,
       msr, origgpr3, ctr, link, xer, ccr, softe, trap, dar, dsisr, result.

       For s390x, the following names are recognized: r0, r1, ... r15, args,
       psw.mask, psw.addr, origgpr2, ilc, trap.

       For AArch64, the following names are recognized: x0, x1, ... x30, fp,
       lr, sp, pc, and origx0.

SEE ALSO
       tapset::registers(3stap)



SystemTap Tapset Reference         June 2018         FUNCTION::REGISTER(3stap)