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Oracle® Solaris 11.4 DTrace (Dynamic Tracing) Guide

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Updated: September 2020
 
 

uregs[] Array

The uregs[] array enables you to access individual user registers. The following tables list indices into the uregs[] array corresponding to each supported Oracle Solaris system architecture.

Table 99  SPARC uregs[] Constants
Constant
Register
R_G0..R_G7
%g0..%g7 global registers
R_O0..R_O7
%o0..%o7 out registers
R_L0..R_L7
%l0..%l7 local registers
R_I0..R_I7
%i0..%i7 in registers
R_CCR
%ccr condition code register
R_PC
%pc program counter
R_NPC
%npc next program counter
R_Y
%y multiply/divide register
R_ASI
%asi address space identifier register
R_FPRS
%fprs floating-point registers state
Table 100  x86 uregs[] Constants
Constant
Register
R_CS
%cs
R_GS
%gs
R_ES
%es
R_DS
%ds
R_EDI
%edi
R_ESI
%esi
R_EBP
%ebp
R_EAX
%eax
R_ESP
%esp
R_EAX
%eax
R_EBX
%ebx
R_ECX
%ecx
R_EDX
%edx
R_TRAPNO
%trapno
R_ERR
%err
R_EIP
%eip
R_CS
%cs
R_ERR
%err
R_EFL
%efl
R_UESP
%uesp
R_SS
%ss

On AMD64 platforms, the uregs array has the same content as it does on x86 platforms, plus the additional elements listed in the following table:

Table 101  AMD64 uregs[] Constants
Constant
Register
R_RSP
%rsp
R_RFL
%rfl
R_RIP
%rip
R_RAX
%rax
R_RCX
%rcx
R_RDX
%rdx
R_RBX
%rbx
R_RBP
%rbp
R_RSI
%rsi
R_RDI
%rdi
R_R8
%r8
R_R9
%r9
R_R10
%r10
R_R11
%r11
R_R12
%r12
R_R13
%r13
R_R14
%r14
R_R15
%r15

The aliases listed in the following table can be used on all platforms:

Constant
Register
R_PC
program counter register
R_SP
stack pointer register
R_R0
first return code
R_R1
second return code