Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

190 lines (155 sloc) 4.239 kb
#include "../includes/ghcconfig.h"
/* ******************************** PowerPC ******************************** */
#if defined(powerpc_HOST_ARCH) || defined(powerpc64_HOST_ARCH)
#if !(defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS))
/* The following code applies, with some differences,
to all powerpc platforms except for powerpc32-linux,
whose calling convention is annoyingly complex.
*/
/* The code is "almost" the same for
32-bit and for 64-bit
*/
#if defined(powerpc64_HOST_ARCH)
#define WS 8
#define LOAD ld
#define STORE std
#else
#define WS 4
#define LOAD lwz
#define STORE stw
#endif
/* Some info about stack frame layout */
#define LINK_SLOT (2*WS)
#define LINKAGE_AREA_SIZE (6*WS)
/* The following defines mirror struct AdjustorStub
from Adjustor.c. Make sure to keep these in sync.
*/
#if defined(powerpc_HOST_ARCH) && defined(darwin_HOST_OS)
#define HEADER_WORDS 6
#elif defined(powerpc64_HOST_ARCH) && defined(darwin_HOST_OS)
#else
#define HEADER_WORDS 3
#endif
#define HPTR_OFF ((HEADER_WORDS )*WS)
#define WPTR_OFF ((HEADER_WORDS + 1)*WS)
#define FRAMESIZE_OFF ((HEADER_WORDS + 2)*WS)
#define EXTRA_WORDS_OFF ((HEADER_WORDS + 3)*WS)
/* Darwin insists on register names, everyone else prefers
to use numbers. */
#if !defined(darwin_HOST_OS)
#define r0 0
#define r1 1
#define r2 2
#define r3 3
#define r4 4
#define r5 5
#define r6 6
#define r7 7
#define r8 8
#define r9 9
#define r10 10
#define r11 11
#define r12 12
#define r30 30
#define r31 31
#endif
.text
#if LEADING_UNDERSCORE
.globl _adjustorCode
_adjustorCode:
#else
.globl adjustorCode
/* Note that we don't build a function descriptor
for AIX-derived ABIs here. This will happen at runtime
in createAdjustor().
*/
adjustorCode:
#endif
/* On entry, r2 will point to the AdjustorStub data structure. */
/* save the link */
mflr r0
STORE r0, LINK_SLOT(r1)
/* set up stack frame */
LOAD r12, FRAMESIZE_OFF(r2)
#ifdef powerpc64_HOST_ARCH
stdux r1, r1, r12
#else
stwux r1, r1, r12
#endif
/* Save some regs so that we can use them.
Note that we use the "Red Zone" below the stack pointer.
*/
STORE r31, -WS(r1)
STORE r30, -2*WS(r1)
mr r31, r1
subf r30, r12, r31
LOAD r12, EXTRA_WORDS_OFF(r2)
mtctr r12
b 2f
1:
LOAD r0, LINKAGE_AREA_SIZE + 8*WS(r30)
STORE r0, LINKAGE_AREA_SIZE + 10*WS(r31)
addi r30, r30, WS
addi r31, r31, WS
2:
bdnz 1b
/* Restore r30 and r31 now.
*/
LOAD r31, -WS(r1)
LOAD r30, -2*WS(r1)
STORE r10, LINKAGE_AREA_SIZE + 9*WS(r1)
STORE r9, LINKAGE_AREA_SIZE + 8*WS(r1)
mr r10, r8
mr r9, r7
mr r8, r6
mr r7, r5
mr r6, r4
mr r5, r3
LOAD r3, HPTR_OFF(r2)
LOAD r12, WPTR_OFF(r2)
#if defined(darwin_HOST_OS)
mtctr r12
#else
LOAD r0, 0(r12)
/* The function we're calling will never be a nested function,
so we don't load r11.
*/
mtctr r0
LOAD r2, WS(r12)
#endif
bctrl
LOAD r1, 0(r1)
LOAD r0, LINK_SLOT(r1)
mtlr r0
blr
#endif
/* ********************************* i386 ********************************** */
#elif defined(i386_HOST_ARCH) && defined(darwin_HOST_OS)
#define WS 4
#define RETVAL_OFF 5
#define HEADER_BYTES 8
#define HPTR_OFF HEADER_BYTES
#define WPTR_OFF (HEADER_BYTES + 1*WS)
#define FRAMESIZE_OFF (HEADER_BYTES + 2*WS)
#define ARGWORDS_OFF (HEADER_BYTES + 3*WS)
.globl _adjustorCode
_adjustorCode:
popl %eax
subl $RETVAL_OFF, %eax
pushl %ebp
movl %esp, %ebp
subl FRAMESIZE_OFF(%eax), %esp
pushl %esi
pushl %edi
leal 8(%ebp), %esi
leal 12(%esp), %edi
movl ARGWORDS_OFF(%eax), %ecx
rep
movsl
popl %edi
popl %esi
pushl HPTR_OFF(%eax)
call *WPTR_OFF(%eax)
leave
ret
#endif
Jump to Line
Something went wrong with that request. Please try again.