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An autorelative pointer is a pointer whose value is interpreted as an offset from the address of the pointer itself; thus, if a data structure has an autorelative pointer member that points to some portion of the data structure itself, then the data structure may be relocated in memory without having to update the value of the auto relative ...
The increment operator increases, and the decrement operator decreases, the value of its operand by 1. The operand must have an arithmetic or pointer data type, and must refer to a modifiable data object. Pointers values are increased (or decreased) by an amount that makes them point to the next (or previous) element adjacent in memory.
Far pointers are 32-bit pointers containing a segment and an offset. To use them the segment register ES is used by using the instruction les [reg]|[mem],dword [mem]|[reg]. [1] They may reference up to 1024 KiB of memory. Note that pointer arithmetic (addition and subtraction) does not modify the segment portion of the pointer, only its offset.
The program counter (PC), [1] commonly called the instruction pointer (IP) in Intel x86 and Itanium microprocessors, and sometimes called the instruction address register (IAR), [2] [1] the instruction counter, [3] or just part of the instruction sequencer, [4] is a processor register that indicates where a computer is in its program sequence.
On the other hand, converting a pointer to a long will "work" in LP64. In the LLP64 model, the reverse is true. These are not problems which affect fully standard-compliant code, but code is often written with implicit assumptions about the widths of data types. C code should prefer (u)intptr_t instead of long when casting pointers into integer ...
Set when an arithmetic result is zero, and cleared when it is non-zero. N Negative flag. Set to a copy of the most significant bit of an arithmetic result. V Overflow flag. Set in case of two's complement overflow. S Sign flag. Unique to AVR, this is always N⊕V, and shows the true sign of a comparison. H Half-carry flag.
The element pc requires ten blocks of memory of the size of pointer to char (usually 40 or 80 bytes on common platforms), but element pa is only one pointer (size 4 or 8 bytes), and the data it refers to is an array of ten bytes (sizeof * pa == 10).
Increment shadow stack pointer 3 Tiger Lake, Zen 3: INCSSPQ r64: F3 REX.W 0F AE /5: RDSSPD r32: F3 0F 1E /1: Read shadow stack pointer into register (low 32 bits) [a] RDSSPQ r64: F3 REX.W 0F 1E /1: Read shadow stack pointer into register (full 64 bits) [a] SAVEPREVSSP: F3 0F 01 EA: Save previous shadow stack pointer RSTORSSP m64: F3 0F 01 /5