> How are you handling control flow? Control flow of what? > > Here's the struct in its current state: > > > > #define UNDWARF_REG_UNDEFINED 0 > > #define UNDWARF_REG_CFA 1 > > #define UNDWARF_REG_SP 2 > > #define UNDWARF_REG_FP 3 > > #define UNDWARF_REG_SP_INDIRECT 4 > > #define UNDWARF_REG_FP_INDIRECT 5 > > #define UNDWARF_REG_R10 6 > > #define UNDWARF_REG_DI 7 > > #define UNDWARF_REG_DX 8 > > > > Why only those registers? Also, if you have the option I would really > suggest using the actual x86 register numbers (ax, ex, dx, bx, sp, bp, > si, di, r8-r15 in that order.) Those are the only registers which are ever needed as the base for finding the previous stack frame. 99% of the time it's sp or bp, the other registers are needed for aligned stacks and entry code. Using the actual register numbers isn't an option because I don't need them all and they need to fit in a small number of bits. This construct might be useful for other arches, which is why I called it "FP" instead of "BP". But then I ruined that with the last 3 :-) -- Josh -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
