mirror of
https://github.com/partic2/libffi
synced 2026-11-10 18:17:19 +00:00
sparc: Rewrite everything
It's impossible to call between v8 and v9 ABIs, because of the stack bias in the v9 ABI. So let's not pretend it's just not implemented yet. Split the v9 code out to a separate file. The register windows prevent ffi_call from setting up the entire stack frame the assembly, but we needn't make an indirect call back to prep_args.
This commit is contained in:
Richard Henderson
+214
-533
@@ -28,6 +28,9 @@
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#include <ffi.h>
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#include <ffi_common.h>
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#include <stdlib.h>
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#include "internal.h"
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#ifndef SPARC64
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/* Force FFI_TYPE_LONGDOUBLE to be different than FFI_TYPE_DOUBLE;
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all further uses in this file will refer to the 128-bit type. */
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@@ -40,632 +43,310 @@
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# define FFI_TYPE_LONGDOUBLE 4
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#endif
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/* ffi_prep_args is called by the assembly routine once stack space
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has been allocated for the function's arguments */
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void FFI_HIDDEN
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ffi_prep_args_v8(char *stack, extended_cif *ecif)
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{
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int i;
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void **p_argv;
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char *argp;
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ffi_type **p_arg;
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/* Skip 16 words for the window save area */
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argp = stack + 16*sizeof(int);
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/* This should only really be done when we are returning a structure,
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however, it's faster just to do it all the time...
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if ( ecif->cif->rtype->type == FFI_TYPE_STRUCT ) */
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*(int *) argp = (long)ecif->rvalue;
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/* And 1 word for the structure return value. */
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argp += sizeof(int);
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#ifdef USING_PURIFY
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/* Purify will probably complain in our assembly routine, unless we
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zero out this memory. */
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((int*)argp)[0] = 0;
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((int*)argp)[1] = 0;
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((int*)argp)[2] = 0;
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((int*)argp)[3] = 0;
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((int*)argp)[4] = 0;
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((int*)argp)[5] = 0;
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#endif
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p_argv = ecif->avalue;
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for (i = ecif->cif->nargs, p_arg = ecif->cif->arg_types; i; i--, p_arg++)
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{
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size_t z;
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if ((*p_arg)->type == FFI_TYPE_STRUCT
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|| (*p_arg)->type == FFI_TYPE_LONGDOUBLE)
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{
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*(unsigned int *) argp = (unsigned long)(* p_argv);
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z = sizeof(int);
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}
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else
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{
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z = (*p_arg)->size;
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if (z < sizeof(int))
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{
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z = sizeof(int);
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switch ((*p_arg)->type)
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{
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case FFI_TYPE_SINT8:
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*(signed int *) argp = *(SINT8 *)(* p_argv);
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break;
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case FFI_TYPE_UINT8:
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*(unsigned int *) argp = *(UINT8 *)(* p_argv);
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break;
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case FFI_TYPE_SINT16:
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*(signed int *) argp = *(SINT16 *)(* p_argv);
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break;
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case FFI_TYPE_UINT16:
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*(unsigned int *) argp = *(UINT16 *)(* p_argv);
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break;
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default:
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FFI_ASSERT(0);
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}
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}
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else
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{
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memcpy(argp, *p_argv, z);
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}
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}
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p_argv++;
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argp += z;
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}
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return;
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}
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int FFI_HIDDEN
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ffi_prep_args_v9(char *stack, extended_cif *ecif)
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{
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int i, ret = 0;
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int tmp;
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void **p_argv;
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char *argp;
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ffi_type **p_arg;
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tmp = 0;
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/* Skip 16 words for the window save area */
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argp = stack + 16*sizeof(long long);
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#ifdef USING_PURIFY
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/* Purify will probably complain in our assembly routine, unless we
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zero out this memory. */
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((long long*)argp)[0] = 0;
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((long long*)argp)[1] = 0;
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((long long*)argp)[2] = 0;
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((long long*)argp)[3] = 0;
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((long long*)argp)[4] = 0;
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((long long*)argp)[5] = 0;
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#endif
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p_argv = ecif->avalue;
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if (ecif->cif->rtype->type == FFI_TYPE_STRUCT &&
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ecif->cif->rtype->size > 32)
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{
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*(unsigned long long *) argp = (unsigned long)ecif->rvalue;
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argp += sizeof(long long);
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tmp = 1;
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}
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for (i = 0, p_arg = ecif->cif->arg_types; i < ecif->cif->nargs;
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i++, p_arg++)
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{
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size_t z;
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z = (*p_arg)->size;
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switch ((*p_arg)->type)
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{
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case FFI_TYPE_STRUCT:
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if (z > 16)
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{
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/* For structures larger than 16 bytes we pass reference. */
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*(unsigned long long *) argp = (unsigned long)* p_argv;
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argp += sizeof(long long);
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tmp++;
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p_argv++;
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continue;
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}
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/* FALLTHROUGH */
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case FFI_TYPE_FLOAT:
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case FFI_TYPE_DOUBLE:
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case FFI_TYPE_LONGDOUBLE:
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ret = 1; /* We should promote into FP regs as well as integer. */
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break;
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}
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if (z < sizeof(long long))
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{
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switch ((*p_arg)->type)
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{
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case FFI_TYPE_SINT8:
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*(signed long long *) argp = *(SINT8 *)(* p_argv);
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break;
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case FFI_TYPE_UINT8:
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*(unsigned long long *) argp = *(UINT8 *)(* p_argv);
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break;
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case FFI_TYPE_SINT16:
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*(signed long long *) argp = *(SINT16 *)(* p_argv);
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break;
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case FFI_TYPE_UINT16:
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*(unsigned long long *) argp = *(UINT16 *)(* p_argv);
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break;
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case FFI_TYPE_SINT32:
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*(signed long long *) argp = *(SINT32 *)(* p_argv);
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break;
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case FFI_TYPE_UINT32:
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*(unsigned long long *) argp = *(UINT32 *)(* p_argv);
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break;
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case FFI_TYPE_FLOAT:
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*(float *) (argp + 4) = *(FLOAT32 *)(* p_argv); /* Right justify */
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break;
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case FFI_TYPE_STRUCT:
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memcpy(argp, *p_argv, z);
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break;
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default:
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FFI_ASSERT(0);
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}
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z = sizeof(long long);
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tmp++;
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}
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else if (z == sizeof(long long))
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{
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memcpy(argp, *p_argv, z);
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z = sizeof(long long);
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tmp++;
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}
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else
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{
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if ((tmp & 1) && (*p_arg)->alignment > 8)
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{
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tmp++;
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argp += sizeof(long long);
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}
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memcpy(argp, *p_argv, z);
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z = 2 * sizeof(long long);
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tmp += 2;
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}
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p_argv++;
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argp += z;
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}
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return ret;
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}
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/* Perform machine dependent cif processing */
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ffi_status FFI_HIDDEN
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ffi_prep_cif_machdep(ffi_cif *cif)
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{
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int wordsize;
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if (cif->abi != FFI_V9)
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{
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wordsize = 4;
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/* If we are returning a struct, this will already have been added.
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Otherwise we need to add it because it's always got to be there! */
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if (cif->rtype->type != FFI_TYPE_STRUCT)
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cif->bytes += wordsize;
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/* sparc call frames require that space is allocated for 6 args,
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even if they aren't used. Make that space if necessary. */
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if (cif->bytes < 4*6+4)
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cif->bytes = 4*6+4;
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}
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else
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{
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wordsize = 8;
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/* sparc call frames require that space is allocated for 6 args,
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even if they aren't used. Make that space if necessary. */
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if (cif->bytes < 8*6)
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cif->bytes = 8*6;
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}
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/* Adjust cif->bytes. to include 16 words for the window save area,
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and maybe the struct/union return pointer area, */
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cif->bytes += 16 * wordsize;
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/* The stack must be 2 word aligned, so round bytes up
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appropriately. */
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cif->bytes = ALIGN(cif->bytes, 2 * wordsize);
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ffi_type *rtype = cif->rtype;
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int rtt = rtype->type;
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size_t bytes;
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int i, n, flags;
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/* Set the return type flag */
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switch (cif->rtype->type)
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switch (rtt)
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{
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case FFI_TYPE_VOID:
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flags = SPARC_RET_VOID;
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break;
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case FFI_TYPE_FLOAT:
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flags = SPARC_RET_FLOAT;
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break;
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case FFI_TYPE_DOUBLE:
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flags = SPARC_RET_DOUBLE;
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break;
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case FFI_TYPE_LONGDOUBLE:
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cif->flags = cif->rtype->type;
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break;
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case FFI_TYPE_STRUCT:
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if (cif->abi == FFI_V9 && cif->rtype->size > 32)
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cif->flags = FFI_TYPE_VOID;
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else
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cif->flags = FFI_TYPE_STRUCT;
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flags = SPARC_RET_STRUCT;
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break;
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case FFI_TYPE_SINT8:
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flags = SPARC_RET_SINT8;
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break;
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case FFI_TYPE_UINT8:
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flags = SPARC_RET_UINT8;
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break;
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case FFI_TYPE_SINT16:
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flags = SPARC_RET_SINT16;
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break;
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case FFI_TYPE_UINT16:
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if (cif->abi == FFI_V9)
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cif->flags = FFI_TYPE_INT;
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else
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cif->flags = cif->rtype->type;
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flags = SPARC_RET_UINT16;
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break;
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case FFI_TYPE_INT:
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case FFI_TYPE_SINT32:
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case FFI_TYPE_UINT32:
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case FFI_TYPE_POINTER:
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flags = SPARC_RET_UINT32;
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break;
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case FFI_TYPE_SINT64:
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case FFI_TYPE_UINT64:
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if (cif->abi == FFI_V9)
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cif->flags = FFI_TYPE_INT;
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else
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cif->flags = FFI_TYPE_SINT64;
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flags = SPARC_RET_INT64;
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break;
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default:
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cif->flags = FFI_TYPE_INT;
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break;
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abort();
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}
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cif->flags = flags;
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bytes = 0;
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for (i = 0, n = cif->nargs; i < n; ++i)
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{
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ffi_type *ty = cif->arg_types[i];
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size_t z = ty->size;
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int tt = ty->type;
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if (tt == FFI_TYPE_STRUCT || tt == FFI_TYPE_LONGDOUBLE)
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/* Passed by reference. */
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z = 4;
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else
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z = ALIGN(z, 4);
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bytes += z;
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}
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/* Sparc call frames require that space is allocated for 6 args,
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even if they aren't used. Make that space if necessary. */
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if (bytes < 6 * 4)
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bytes = 6 * 4;
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/* The ABI always requires space for the struct return pointer. */
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bytes += 4;
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/* The stack must be 2 word aligned, so round bytes up appropriately. */
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bytes = ALIGN(bytes, 2 * 4);
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/* Include the call frame to prep_args. */
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bytes += 4*16 + 4*8;
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cif->bytes = bytes;
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return FFI_OK;
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}
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static int
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ffi_v9_layout_struct(ffi_type *arg, int off, char *ret, char *intg, char *flt)
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extern void ffi_call_v8(ffi_cif *cif, void (*fn)(void), void *rvalue,
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void **avalue, size_t bytes) FFI_HIDDEN;
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int FFI_HIDDEN
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ffi_prep_args_v8(ffi_cif *cif, unsigned long *argp, void *rvalue, void **avalue)
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{
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ffi_type **ptr = &arg->elements[0];
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ffi_type **p_arg;
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int flags = cif->flags;
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int i, nargs;
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while (*ptr != NULL)
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if (rvalue == NULL)
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{
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if (off & ((*ptr)->alignment - 1))
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off = ALIGN(off, (*ptr)->alignment);
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if (flags == SPARC_RET_STRUCT)
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{
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/* Since we pass the pointer to the callee, we need a value.
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We allowed for this space in ffi_call, before ffi_call_v8
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alloca'd the space. */
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rvalue = (char *)argp + cif->bytes;
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}
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else
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{
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/* Otherwise, we can ignore the return value. */
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flags = SPARC_RET_VOID;
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}
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}
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switch ((*ptr)->type)
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/* This could only really be done when we are returning a structure.
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However, the space is reserved so we can do it unconditionally. */
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*argp++ = (unsigned long)rvalue;
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#ifdef USING_PURIFY
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/* Purify will probably complain in our assembly routine,
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unless we zero out this memory. */
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memset(argp, 0, 6*4);
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#endif
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p_arg = cif->arg_types;
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for (i = 0, nargs = cif->nargs; i < nargs; i++)
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{
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ffi_type *ty = p_arg[i];
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void *a = avalue[i];
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switch (ty->type)
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{
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case FFI_TYPE_STRUCT:
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off = ffi_v9_layout_struct(*ptr, off, ret, intg, flt);
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off = ALIGN(off, FFI_SIZEOF_ARG);
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break;
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case FFI_TYPE_FLOAT:
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case FFI_TYPE_DOUBLE:
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case FFI_TYPE_LONGDOUBLE:
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memmove(ret + off, flt + off, (*ptr)->size);
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off += (*ptr)->size;
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*argp++ = (unsigned long)a;
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break;
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case FFI_TYPE_DOUBLE:
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case FFI_TYPE_UINT64:
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case FFI_TYPE_SINT64:
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memcpy(argp, a, 8);
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argp += 2;
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break;
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case FFI_TYPE_INT:
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case FFI_TYPE_FLOAT:
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case FFI_TYPE_UINT32:
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case FFI_TYPE_SINT32:
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case FFI_TYPE_POINTER:
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*argp++ = *(unsigned *)a;
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break;
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case FFI_TYPE_UINT8:
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*argp++ = *(UINT8 *)a;
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break;
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case FFI_TYPE_SINT8:
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*argp++ = *(SINT8 *)a;
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break;
|
||||
case FFI_TYPE_UINT16:
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*argp++ = *(UINT16 *)a;
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||||
break;
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||||
case FFI_TYPE_SINT16:
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*argp++ = *(SINT16 *)a;
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break;
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default:
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memmove(ret + off, intg + off, (*ptr)->size);
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off += (*ptr)->size;
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break;
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abort();
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}
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ptr++;
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}
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return off;
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return flags;
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}
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#ifdef SPARC64
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extern int ffi_call_v9(void *, extended_cif *, unsigned,
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unsigned, unsigned *, void (*fn)(void)) FFI_HIDDEN;
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#else
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extern int ffi_call_v8(void *, extended_cif *, unsigned,
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unsigned, unsigned *, void (*fn)(void)) FFI_HIDDEN;
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#endif
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#ifndef __GNUC__
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void ffi_flush_icache (void *, size_t) FFI_HIDDEN;
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#endif
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void ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue)
|
||||
void
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ffi_call (ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue)
|
||||
{
|
||||
extended_cif ecif;
|
||||
void *rval = rvalue;
|
||||
size_t bytes = cif->bytes;
|
||||
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||||
ecif.cif = cif;
|
||||
ecif.avalue = avalue;
|
||||
FFI_ASSERT (cif->abi == FFI_V8);
|
||||
|
||||
/* If the return value is a struct and we don't have a return */
|
||||
/* value address then we need to make one */
|
||||
/* If we've not got a return value, we need to create one if we've
|
||||
got to pass the return value to the callee. Otherwise ignore it. */
|
||||
if (rvalue == NULL && cif->flags == SPARC_RET_STRUCT)
|
||||
bytes += ALIGN (cif->rtype->size, 8);
|
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ecif.rvalue = rvalue;
|
||||
if (cif->rtype->type == FFI_TYPE_STRUCT)
|
||||
{
|
||||
if (cif->rtype->size <= 32)
|
||||
rval = alloca(64);
|
||||
else
|
||||
{
|
||||
rval = NULL;
|
||||
if (rvalue == NULL)
|
||||
ecif.rvalue = alloca(cif->rtype->size);
|
||||
}
|
||||
}
|
||||
|
||||
switch (cif->abi)
|
||||
{
|
||||
case FFI_V8:
|
||||
#ifdef SPARC64
|
||||
/* We don't yet support calling 32bit code from 64bit */
|
||||
FFI_ASSERT(0);
|
||||
#else
|
||||
if (rvalue && (cif->rtype->type == FFI_TYPE_STRUCT
|
||||
|| cif->flags == FFI_TYPE_LONGDOUBLE))
|
||||
{
|
||||
/* For v8, we need an "unimp" with size of returning struct */
|
||||
/* behind "call", so we alloc some executable space for it. */
|
||||
/* l7 is used, we need to make sure v8.S doesn't use %l7. */
|
||||
unsigned int *call_struct = NULL;
|
||||
ffi_closure_alloc(32, (void **)&call_struct);
|
||||
if (call_struct)
|
||||
{
|
||||
unsigned long f = (unsigned long)fn;
|
||||
call_struct[0] = 0xae10001f; /* mov %i7, %l7 */
|
||||
call_struct[1] = 0xbe10000f; /* mov %o7, %i7 */
|
||||
call_struct[2] = 0x03000000 | f >> 10; /* sethi %hi(fn), %g1 */
|
||||
call_struct[3] = 0x9fc06000 | (f & 0x3ff); /* jmp %g1+%lo(fn), %o7 */
|
||||
call_struct[4] = 0x01000000; /* nop */
|
||||
if (cif->rtype->size < 0x7f)
|
||||
call_struct[5] = cif->rtype->size; /* unimp */
|
||||
else
|
||||
call_struct[5] = 0x01000000; /* nop */
|
||||
call_struct[6] = 0x81c7e008; /* ret */
|
||||
call_struct[7] = 0xbe100017; /* mov %l7, %i7 */
|
||||
#ifdef __GNUC__
|
||||
asm volatile ("iflush %0; iflush %0+8; iflush %0+16; iflush %0+24" : :
|
||||
"r" (call_struct) : "memory");
|
||||
/* SPARC v8 requires 5 instructions for flush to be visible */
|
||||
asm volatile ("nop; nop; nop; nop; nop");
|
||||
#else
|
||||
ffi_flush_icache (call_struct, 32);
|
||||
#endif
|
||||
ffi_call_v8(ffi_prep_args_v8, &ecif, cif->bytes,
|
||||
cif->flags, rvalue, call_struct);
|
||||
ffi_closure_free(call_struct);
|
||||
}
|
||||
else
|
||||
{
|
||||
ffi_call_v8(ffi_prep_args_v8, &ecif, cif->bytes,
|
||||
cif->flags, rvalue, fn);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
ffi_call_v8(ffi_prep_args_v8, &ecif, cif->bytes,
|
||||
cif->flags, rvalue, fn);
|
||||
}
|
||||
#endif
|
||||
break;
|
||||
case FFI_V9:
|
||||
#ifdef SPARC64
|
||||
ffi_call_v9(ffi_prep_args_v9, &ecif, cif->bytes,
|
||||
cif->flags, rval, fn);
|
||||
if (rvalue && rval && cif->rtype->type == FFI_TYPE_STRUCT)
|
||||
ffi_v9_layout_struct(cif->rtype, 0, (char *)rvalue, (char *)rval, ((char *)rval)+32);
|
||||
#else
|
||||
/* And vice versa */
|
||||
FFI_ASSERT(0);
|
||||
#endif
|
||||
break;
|
||||
default:
|
||||
FFI_ASSERT(0);
|
||||
break;
|
||||
}
|
||||
ffi_call_v8(cif, fn, rvalue, avalue, -bytes);
|
||||
}
|
||||
|
||||
|
||||
#ifdef SPARC64
|
||||
extern void ffi_closure_v9(void) FFI_HIDDEN;
|
||||
#ifdef __GNUC__
|
||||
static inline void
|
||||
ffi_flush_icache (void *p)
|
||||
{
|
||||
/* SPARC v8 requires 5 instructions for flush to be visible */
|
||||
asm volatile ("iflush %0; iflush %0+8; nop; nop; nop; nop; nop"
|
||||
: : "r" (p) : "memory");
|
||||
}
|
||||
#else
|
||||
extern void ffi_closure_v8(void) FFI_HIDDEN;
|
||||
extern void ffi_flush_icache (void *) FFI_HIDDEN;
|
||||
#endif
|
||||
|
||||
extern void ffi_closure_v8(void) FFI_HIDDEN;
|
||||
|
||||
ffi_status
|
||||
ffi_prep_closure_loc (ffi_closure* closure,
|
||||
ffi_cif* cif,
|
||||
ffi_prep_closure_loc (ffi_closure *closure,
|
||||
ffi_cif *cif,
|
||||
void (*fun)(ffi_cif*, void*, void**, void*),
|
||||
void *user_data,
|
||||
void *codeloc)
|
||||
{
|
||||
unsigned int *tramp = (unsigned int *) &closure->tramp[0];
|
||||
unsigned long fn;
|
||||
#ifdef SPARC64
|
||||
/* Trampoline address is equal to the closure address. We take advantage
|
||||
of that to reduce the trampoline size by 8 bytes. */
|
||||
if (cif->abi != FFI_V9)
|
||||
return FFI_BAD_ABI;
|
||||
fn = (unsigned long) ffi_closure_v9;
|
||||
tramp[0] = 0x83414000; /* rd %pc, %g1 */
|
||||
tramp[1] = 0xca586010; /* ldx [%g1+16], %g5 */
|
||||
tramp[2] = 0x81c14000; /* jmp %g5 */
|
||||
tramp[3] = 0x01000000; /* nop */
|
||||
*((unsigned long *) &tramp[4]) = fn;
|
||||
#else
|
||||
unsigned long ctx = (unsigned long) codeloc;
|
||||
unsigned long ctx = (unsigned long) closure;
|
||||
unsigned long fn = (unsigned long) ffi_closure_v8;
|
||||
|
||||
if (cif->abi != FFI_V8)
|
||||
return FFI_BAD_ABI;
|
||||
fn = (unsigned long) ffi_closure_v8;
|
||||
|
||||
tramp[0] = 0x03000000 | fn >> 10; /* sethi %hi(fn), %g1 */
|
||||
tramp[1] = 0x05000000 | ctx >> 10; /* sethi %hi(ctx), %g2 */
|
||||
tramp[2] = 0x81c06000 | (fn & 0x3ff); /* jmp %g1+%lo(fn) */
|
||||
tramp[3] = 0x8410a000 | (ctx & 0x3ff);/* or %g2, %lo(ctx) */
|
||||
#endif
|
||||
|
||||
closure->cif = cif;
|
||||
closure->fun = fun;
|
||||
closure->user_data = user_data;
|
||||
|
||||
/* Flush the Icache. closure is 8 bytes aligned. */
|
||||
#ifdef __GNUC__
|
||||
#ifdef SPARC64
|
||||
asm volatile ("flush %0; flush %0+8" : : "r" (closure) : "memory");
|
||||
#else
|
||||
asm volatile ("iflush %0; iflush %0+8" : : "r" (closure) : "memory");
|
||||
/* SPARC v8 requires 5 instructions for flush to be visible */
|
||||
asm volatile ("nop; nop; nop; nop; nop");
|
||||
#endif
|
||||
#else
|
||||
ffi_flush_icache (closure, 16);
|
||||
#endif
|
||||
ffi_flush_icache (closure);
|
||||
|
||||
return FFI_OK;
|
||||
}
|
||||
|
||||
int FFI_HIDDEN
|
||||
ffi_closure_sparc_inner_v8(ffi_closure *closure, void *rvalue,
|
||||
unsigned long *gpr, unsigned long *scratch)
|
||||
unsigned long *argp)
|
||||
{
|
||||
ffi_cif *cif;
|
||||
ffi_type **arg_types;
|
||||
void **avalue;
|
||||
int i, argn;
|
||||
int i, nargs, flags;
|
||||
|
||||
cif = closure->cif;
|
||||
arg_types = cif->arg_types;
|
||||
avalue = alloca(cif->nargs * sizeof(void *));
|
||||
nargs = cif->nargs;
|
||||
flags = cif->flags;
|
||||
avalue = alloca(nargs * sizeof(void *));
|
||||
|
||||
/* Copy the caller's structure return address so that the closure
|
||||
returns the data directly to the caller. */
|
||||
if (cif->flags == FFI_TYPE_STRUCT || cif->flags == FFI_TYPE_LONGDOUBLE)
|
||||
rvalue = (void *) gpr[0];
|
||||
if (flags == SPARC_RET_STRUCT)
|
||||
rvalue = (void *)*argp;
|
||||
|
||||
/* Always skip the structure return address. */
|
||||
argn = 1;
|
||||
argp++;
|
||||
|
||||
/* Grab the addresses of the arguments from the stack frame. */
|
||||
for (i = 0; i < cif->nargs; i++)
|
||||
for (i = 0; i < nargs; i++)
|
||||
{
|
||||
if (arg_types[i]->type == FFI_TYPE_STRUCT
|
||||
|| arg_types[i]->type == FFI_TYPE_LONGDOUBLE)
|
||||
ffi_type *ty = arg_types[i];
|
||||
int tt = ty->type;
|
||||
void *a = argp;
|
||||
|
||||
switch (tt)
|
||||
{
|
||||
case FFI_TYPE_STRUCT:
|
||||
case FFI_TYPE_LONGDOUBLE:
|
||||
/* Straight copy of invisible reference. */
|
||||
avalue[i] = (void *)gpr[argn++];
|
||||
}
|
||||
else if ((arg_types[i]->type == FFI_TYPE_DOUBLE
|
||||
|| arg_types[i]->type == FFI_TYPE_SINT64
|
||||
|| arg_types[i]->type == FFI_TYPE_UINT64)
|
||||
/* gpr is 8-byte aligned. */
|
||||
&& (argn % 2) != 0)
|
||||
{
|
||||
/* Align on a 8-byte boundary. */
|
||||
scratch[0] = gpr[argn];
|
||||
scratch[1] = gpr[argn+1];
|
||||
avalue[i] = scratch;
|
||||
scratch -= 2;
|
||||
argn += 2;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Always right-justify. */
|
||||
argn += ALIGN(arg_types[i]->size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG;
|
||||
avalue[i] = ((char *) &gpr[argn]) - arg_types[i]->size;
|
||||
a = (void *)*argp;
|
||||
break;
|
||||
|
||||
case FFI_TYPE_DOUBLE:
|
||||
case FFI_TYPE_SINT64:
|
||||
case FFI_TYPE_UINT64:
|
||||
if ((unsigned long)a & 7)
|
||||
{
|
||||
/* Align on a 8-byte boundary. */
|
||||
UINT64 *tmp = alloca(8);
|
||||
*tmp = ((UINT64)argp[0] << 32) | argp[1];
|
||||
a = tmp;
|
||||
}
|
||||
argp++;
|
||||
break;
|
||||
|
||||
case FFI_TYPE_INT:
|
||||
case FFI_TYPE_FLOAT:
|
||||
case FFI_TYPE_UINT32:
|
||||
case FFI_TYPE_SINT32:
|
||||
case FFI_TYPE_POINTER:
|
||||
break;
|
||||
case FFI_TYPE_UINT16:
|
||||
case FFI_TYPE_SINT16:
|
||||
a += 2;
|
||||
break;
|
||||
case FFI_TYPE_UINT8:
|
||||
case FFI_TYPE_SINT8:
|
||||
a += 3;
|
||||
break;
|
||||
|
||||
default:
|
||||
abort();
|
||||
}
|
||||
argp++;
|
||||
avalue[i] = a;
|
||||
}
|
||||
|
||||
/* Invoke the closure. */
|
||||
(closure->fun) (cif, rvalue, avalue, closure->user_data);
|
||||
|
||||
/* Tell ffi_closure_sparc how to perform return type promotions. */
|
||||
return cif->rtype->type;
|
||||
}
|
||||
|
||||
int FFI_HIDDEN
|
||||
ffi_closure_sparc_inner_v9(ffi_closure *closure, void *rvalue,
|
||||
unsigned long *gpr, double *fpr)
|
||||
{
|
||||
ffi_cif *cif;
|
||||
ffi_type **arg_types;
|
||||
void **avalue;
|
||||
int i, argn, fp_slot_max;
|
||||
|
||||
cif = closure->cif;
|
||||
arg_types = cif->arg_types;
|
||||
avalue = alloca(cif->nargs * sizeof(void *));
|
||||
|
||||
/* Copy the caller's structure return address so that the closure
|
||||
returns the data directly to the caller. */
|
||||
if (cif->flags == FFI_TYPE_VOID
|
||||
&& cif->rtype->type == FFI_TYPE_STRUCT)
|
||||
{
|
||||
rvalue = (void *) gpr[0];
|
||||
/* Skip the structure return address. */
|
||||
argn = 1;
|
||||
}
|
||||
else
|
||||
argn = 0;
|
||||
|
||||
fp_slot_max = 16 - argn;
|
||||
|
||||
/* Grab the addresses of the arguments from the stack frame. */
|
||||
for (i = 0; i < cif->nargs; i++)
|
||||
{
|
||||
if (arg_types[i]->type == FFI_TYPE_STRUCT)
|
||||
{
|
||||
if (arg_types[i]->size > 16)
|
||||
{
|
||||
/* Straight copy of invisible reference. */
|
||||
avalue[i] = (void *)gpr[argn++];
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Left-justify. */
|
||||
ffi_v9_layout_struct(arg_types[i],
|
||||
0,
|
||||
(char *) &gpr[argn],
|
||||
(char *) &gpr[argn],
|
||||
(char *) &fpr[argn]);
|
||||
avalue[i] = &gpr[argn];
|
||||
argn += ALIGN(arg_types[i]->size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Right-justify. */
|
||||
argn += ALIGN(arg_types[i]->size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG;
|
||||
|
||||
/* Align on a 16-byte boundary. */
|
||||
if (arg_types[i]->type == FFI_TYPE_LONGDOUBLE && (argn % 2) != 0)
|
||||
argn++;
|
||||
if (i < fp_slot_max
|
||||
&& (arg_types[i]->type == FFI_TYPE_FLOAT
|
||||
|| arg_types[i]->type == FFI_TYPE_DOUBLE
|
||||
|| arg_types[i]->type == FFI_TYPE_LONGDOUBLE))
|
||||
avalue[i] = ((char *) &fpr[argn]) - arg_types[i]->size;
|
||||
else
|
||||
avalue[i] = ((char *) &gpr[argn]) - arg_types[i]->size;
|
||||
}
|
||||
}
|
||||
|
||||
/* Invoke the closure. */
|
||||
(closure->fun) (cif, rvalue, avalue, closure->user_data);
|
||||
|
||||
/* Tell ffi_closure_sparc how to perform return type promotions. */
|
||||
return cif->rtype->type;
|
||||
return flags;
|
||||
}
|
||||
#endif /* !SPARC64 */
|
||||
|
||||
Reference in New Issue
Block a user