//go:nosplit
//go:nowritebarrierrec
func (c *sigctxt) rip() uint64 { return (uint64)(c.regs().sc_lr) } /* XXX */

func (c *sigctxt) fault() uintptr  { return uintptr(c.sigaddr()) }
func (c *sigctxt) sigcode() uint64 { return uint64(c.info.si_code) }
func (c *sigctxt) sigaddr() uint64 {
	return *(*uint64)(add(unsafe.Pointer(c.info), 16))
}

//go:nosplit
//go:nowritebarrierrec
func (c *sigctxt) pc() uint64 { return uint64(c.regs().sc_elr) }

Go runtime functions require the "linux" name of fields (ss_sp, si_addr, etc)
However, AIX structures don't provide such names and must be modified.

TODO(aix): create a script to automatise defs_aix creation.

Modifications made:
 - sigset replaced by a [4]uint64 array
 - add sigset_all variable
 - siginfo.si_addr uintptr instead of *byte
 - add (*timeval) set_usec
 - stackt.ss_sp uintptr instead of *byte

	sa_flags    uint64
	sa_restorer uintptr
	sa_mask     uint64
}

type siginfoFields struct {
	si_signo int32
	si_errno int32
	si_code  int32
	// below here is a union; si_addr is the only field we use
	si_addr uint64
}

type siginfo struct {
	siginfoFields

	// Pad struct to the max size in the kernel.
	_ [_si_max_size - unsafe.Sizeof(siginfoFields{})]byte
}

func (c *sigctxt) sigpc() uintptr { return uintptr(c.eip()) }

func (c *sigctxt) sigsp() uintptr { return uintptr(c.esp()) }
func (c *sigctxt) siglr() uintptr { return 0 }
func (c *sigctxt) fault() uintptr { return uintptr(c.sigaddr()) }

// preparePanic sets up the stack to look like a call to sigpanic.
func (c *sigctxt) preparePanic(sig uint32, gp *g) {
	pc := uintptr(c.eip())
	sp := uintptr(c.esp())

func (c *sigctxt) fs() uint32      { return c.regs().__gregs[_REG_FS] }
func (c *sigctxt) gs() uint32      { return c.regs().__gregs[_REG_GS] }
func (c *sigctxt) sigcode() uint32 { return uint32(c.info._code) }
func (c *sigctxt) sigaddr() uint32 {
	return *(*uint32)(unsafe.Pointer(&c.info._reason[0]))
}

func (c *sigctxt) set_eip(x uint32)     { c.regs().__gregs[_REG_EIP] = x }
func (c *sigctxt) set_esp(x uint32)     { c.regs().__gregs[_REG_UESP] = x }

func (c *sigctxt) fs() uint32      { return c.regs().sc_fs }
func (c *sigctxt) gs() uint32      { return c.regs().sc_gs }
func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
func (c *sigctxt) sigaddr() uint32 {
	return *(*uint32)(add(unsafe.Pointer(c.info), 12))
}

func (c *sigctxt) set_eip(x uint32)     { c.regs().sc_eip = x }
func (c *sigctxt) set_esp(x uint32)     { c.regs().sc_esp = x }

	SYS_SHMAT                  = 228 // { caddr_t shmat(int shmid, const void *shmaddr, int shmflg); }
	SYS_SHMCTL                 = 229 // { int shmctl(int shmid, int cmd, struct shmid_ds *buf); }
	SYS_SHMDT                  = 230 // { int shmdt(const void *shmaddr); }
	SYS_SHMGET                 = 231 // { int shmget(key_t key, size_t size, int shmflg); }

	p_align  uint64 /* Segment alignment */
}

type elfShdr struct {
	sh_name      uint32 /* Section name (string tbl index) */
	sh_type      uint32 /* Section type */
	sh_flags     uint64 /* Section flags */
	sh_addr      uint64 /* Section virtual addr at execution */
	sh_offset    uint64 /* Section file offset */
	sh_size      uint64 /* Section size in bytes */
	sh_link      uint32 /* Link to another section */

		nftFamily = "ip6"
	}

	return &detectLocal{
		ifLocal:       []string{"-s", cidr},
		ifNotLocal:    []string{"!", "-s", cidr},
		ifLocalNFT:    []string{nftFamily, "saddr", cidr},
		ifNotLocalNFT: []string{nftFamily, "saddr", "!=", cidr},
	}
}

// NewDetectLocalByBridgeInterface returns a LocalTrafficDetector that considers traffic
// from interfaceName to be from a local pod, and traffic from other interfaces to be

func (c *sigctxt) fs() uint64      { return c.regs().sc_fs }
func (c *sigctxt) gs() uint64      { return c.regs().sc_gs }
func (c *sigctxt) sigcode() uint64 { return uint64(c.info.si_code) }
func (c *sigctxt) sigaddr() uint64 {
	return *(*uint64)(add(unsafe.Pointer(c.info), 16))
}

func (c *sigctxt) set_rip(x uint64)     { c.regs().sc_rip = x }
func (c *sigctxt) set_rsp(x uint64)     { c.regs().sc_rsp = x }