How to print register values in GDB? - Stack Overflow You can refer to machine register contents, in expressions, as variables with names starting with ‘$’ The names of registers are different for each machine; use info registers to see the names used on your machine
Registers (Debugging with GDB) - sourceware. org GDB always considers the contents of an ordinary register as an integer when the register is examined in this way Some machines have special registers which can hold nothing but floating point; these registers are considered to have floating point values
How to test if register value is unavailable in gdb? I'm using a gdbinit file that is supposed to print the values of all registers at every hook_stop, followed by the stack and data frames However, when running many programs, there are often segment registers that are unavailable, which is causing me problems
Ignore unfetchable registers · Issue #421 · WebFreak001 code . . . I think in this case, that specific register, rather than the whole register list, should be ignored I agree - but we currently get the value of all registers (which also provide us with the names) using data-list-register-values) But looking at the docs there is an option --skip-unavailable Please recheck with plain GDB:
Test if a variable is unavailable in GDB - Arvids Blog A little more googling revealed a question, and answer, on GDB’s mailing list on how to ignore errors in user defined commands, this was making clever use of GDB’s python API
Debugging with GDB - Registers - Stanford University In such cases, GDB normally works with the virtual format only (the format that makes sense for your program), but the info registers command prints the data in both formats Normally, register values are relative to the selected stack frame (see section Selecting a frame)
Invalid registers - gdb. sourceware. narkive. com Invalid registers Andrew STUBBS 20 years ago Hi, I have been having a little trouble updating from GDB 5 3 to GDB 6 3 It used to be the case that GDB would report '*value not available*' (for SH - I haven't checked other architectures) if the value of a register is not known in the current stack frame However, it no longer does this