tcg/i386: Use GDB JIT debugging interface only for hosts with ELF

Not all i386 / x86_64 hosts use ELF.
Ask the compiler whether ELF is used.

On w64, gdb crashes when ELF_HOST_MACHINE is defined.

Cc: Blue Swirl <blauwirbel@gmail.com>
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
tcg/i386: Add support for w64 ABI

w64 uses the registers rcx, rdx, r8 and r9 for function arguments,
so it needs a different declaration of tcg_target_call_iarg_regs.

rax, rcx, rdx, r8, r9, r10 and r11 may be changed by function calls.

rbx, rbp, rdi, rsi, r12, r13, r14 and r15 remain unchanged by function calls.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
w64: Fix type casts used in some macros in cpu-all.h

Instead of type casts to long, w64 needs type casts to intptr_t.
For other hosts, this changes nothing.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
w64: Fix data types in cpu-all.h, exec.c

w64 needs uintptr_t instead of unsigned long.
For other hosts, nothing changes.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
w64: Use larger alignment for section with generated code

The MinGW-w64 compiler allows __attribute__((aligned (32)).

Signed-off-by: Stefan Weil <sw@weilnetz.de>
w32: Move defines for socket specific errors to qemu-os-win32.h

As those defines are only used for w32,
they should be in the header file for w32.

All files which include slirp.h or qemu_socket.h also
include qemu-os-win32.h.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
w64: Fix definition of setjmp

The default definition of setjmp which is implemented in MinGW-w64
cannot be used with programs like QEMU which call longjmp from
code without structured exception handling (SEH).

This code therefore disables stack unwinding.

We could also implement SEH for QEMU's generated JIT code, but
that is much more difficult. Stack unwinding would also cost
execution time.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
w64: Fix struct CPUTLBEntry

For w64, some entries need 'uintptr_t' instead of 'unsigned long'.

For other host systems, both data types are identical, so nothing changes.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
softmmu: Use uintptr_t for physaddr and rename it

Variable physaddr is a host address which should be represented by
data type 'uintptr_t'.

This is needed for w64 and changes nothing for other hosts.

v2:
Rename physaddr -> hostaddr (suggested by Blue Swirl).

Signed-off-by: Stefan Weil <sw@weilnetz.de>
w64: Use uintptr_t in exec.c

Replace all type casts to 'long' or 'unsigned long' by 'intptr_t' or 'uintptr_t'.

For type casts which are only used to extract the lower bits of an address
or to modify those bits, signedness does not matter. There I always use 'uintptr_t'.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
w64: Fix data types in softmmu*.h

w64 requires uintptr_t.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
w64: Fix type cast in os_host_main_loop_wait

Casting a pointer to an integer must use (DWORD_PTR) instead of (DWORD).
This also matches the definition of 'fd' (gint for w32, gint64 for w64).

Signed-off-by: Stefan Weil <sw@weilnetz.de>
target-mips: Fix type cast for w64 (uintptr_t)

This changes nothing for other hosts.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
cpu-exec: Remove non-portable type cast and fix format string

This change is needed for w64, but also changes the code for other hosts.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
disas: Replace 'unsigned long' by 'uintptr_t'

This is needed for w64. It changes nothing for other hosts.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
nbd: Fix compiler warning (w64)

Portable printing of dev_offset (data type off_t) needs a type cast.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
w64: Fix time conversion for some versions of MinGW-w64

tb.time is a time value, but not necessarily of the same size as time_t:
while time_t is 64 bit for w64, tb.time still is 32 bit only.

Therefore we need en explicit conversion.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Merge branch 'w64' of git://qemu.weilnetz.de/qemu

* 'w64' of git://qemu.weilnetz.de/qemu:
  w64: Fix time conversion for some versions of MinGW-w64
  nbd: Fix compiler warning (w64)
  disas: Replace 'unsigned long' by 'uintptr_t'
  cpu-exec: Remove non-portable type cast and fix format string
  target-mips: Fix type cast for w64 (uintptr_t)
  w64: Fix type cast in os_host_main_loop_wait
  w64: Fix data types in softmmu*.h
  w64: Use uintptr_t in exec.c
  softmmu: Use uintptr_t for physaddr and rename it
  w64: Fix struct CPUTLBEntry
  w64: Fix definition of setjmp
  w32: Move defines for socket specific errors to qemu-os-win32.h
  w64: Use larger alignment for section with generated code
  w64: Fix data types in cpu-all.h, exec.c
  w64: Fix type casts used in some macros in cpu-all.h
  tcg/i386: Add support for w64 ABI
  tcg/i386: Use GDB JIT debugging interface only for hosts with ELF