[PATCH] Implement libffi for AARCH64:ILP32
Andrew Pinski
pinskia@gmail.com
Tue Feb 10 22:46:00 GMT 2015
On Tue, Feb 10, 2015 at 1:20 PM, Richard Henderson <rth@redhat.com> wrote:
> On 02/10/2015 11:02 AM, Andrew Pinski wrote:
>> +#define FFI_SIZEOF_JAVA_RAW 4
>
> Since aarch64 doesn't implement the raw java api, this is irrelevant.
Ok. This is what I applied to GCC after testing it (I don't have
access to the libffi git repo).
2015-02-10 Andrew Pinski <apinski@cavium.com>
* src/aarch64/ffitarget.h (ffi_arg): Use unsigned long long for ILP32.
(FFI_SIZEOF_ARG): Define to 64 for ILP32.
(ffi_sarg): Use signed long long for ILP32.
* src/aarch64/sysv.S (PTR_REG): New macro.
(PTR_SIZE): New macro.
(ffi_closure_SYSV): Load cif, fn and user_data using PTR_REG.
(ffi_go_closure_SYSV): Load cif and fn using PTR_REG.
Thanks,
Andrew Pinski
>
>
> r~
-------------- next part --------------
commit b3d4df7304dcbc56475f400837b47fc52143292e
Author: Andrew Pinski <apinski@cavium.com>
Date: Mon Feb 9 08:41:09 2015 +0000
* src/aarch64/ffitarget.h (ffi_arg): Use unsigned long long for ILP32.
(FFI_SIZEOF_ARG): Define to 64 for ILP32.
(ffi_sarg): Use signed long long for ILP32.
* src/aarch64/sysv.S (PTR_REG): New macro.
(PTR_SIZE): New macro.
(ffi_closure_SYSV): Load cif, fn and user_data using PTR_REG.
(ffi_go_closure_SYSV): Load cif and fn using PTR_REG.
diff --git a/libffi/src/aarch64/ffitarget.h b/libffi/src/aarch64/ffitarget.h
index fca2811..2862ec7 100644
--- a/libffi/src/aarch64/ffitarget.h
+++ b/libffi/src/aarch64/ffitarget.h
@@ -27,8 +27,14 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#endif
#ifndef LIBFFI_ASM
+#ifdef __ILP32__
+#define FFI_SIZEOF_ARG 8
+typedef unsigned long long ffi_arg;
+typedef signed long long ffi_sarg;
+#else
typedef unsigned long ffi_arg;
typedef signed long ffi_sarg;
+#endif
typedef enum ffi_abi
{
diff --git a/libffi/src/aarch64/sysv.S b/libffi/src/aarch64/sysv.S
index 46f50b9..c1bf9b9 100644
--- a/libffi/src/aarch64/sysv.S
+++ b/libffi/src/aarch64/sysv.S
@@ -45,6 +45,18 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
# define BE(X) 0
#endif
+#ifdef __ILP32__
+#define PTR_REG(n) w##n
+#else
+#define PTR_REG(n) x##n
+#endif
+
+#ifdef __ILP32__
+#define PTR_SIZE 4
+#else
+#define PTR_SIZE 8
+#endif
+
.text
.align 4
@@ -248,8 +260,8 @@ CNAME(ffi_closure_SYSV):
stp x6, x7, [sp, #16 + 16*N_V_ARG_REG + 48]
/* Load ffi_closure_inner arguments. */
- ldp x0, x1, [x17, #FFI_TRAMPOLINE_CLOSURE_OFFSET] /* load cif, fn */
- ldr x2, [x17, #FFI_TRAMPOLINE_CLOSURE_OFFSET+16] /* load user_data */
+ ldp PTR_REG(0), PTR_REG(1), [x17, #FFI_TRAMPOLINE_CLOSURE_OFFSET] /* load cif, fn */
+ ldr PTR_REG(2), [x17, #FFI_TRAMPOLINE_CLOSURE_OFFSET+PTR_SIZE*2] /* load user_data */
.Ldo_closure:
add x3, sp, #16 /* load context */
add x4, sp, #ffi_closure_SYSV_FS /* load stack */
@@ -403,7 +415,7 @@ CNAME(ffi_go_closure_SYSV):
stp x6, x7, [sp, #16 + 16*N_V_ARG_REG + 48]
/* Load ffi_closure_inner arguments. */
- ldp x0, x1, [x18, #8] /* load cif, fn */
+ ldp PTR_REG(0), PTR_REG(1), [x18, #PTR_SIZE]/* load cif, fn */
mov x2, x18 /* load user_data */
b .Ldo_closure
cfi_endproc
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