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-rw-r--r--libffi/src/pa/ffi.c603
-rw-r--r--libffi/src/pa/ffitarget.h57
-rw-r--r--libffi/src/pa/linux.S281
3 files changed, 941 insertions, 0 deletions
diff --git a/libffi/src/pa/ffi.c b/libffi/src/pa/ffi.c
new file mode 100644
index 0000000..57331fe
--- /dev/null
+++ b/libffi/src/pa/ffi.c
@@ -0,0 +1,603 @@
+/* -----------------------------------------------------------------------
+ ffi.c - (c) 2003-2004 Randolph Chung <tausq@debian.org>
+
+ HPPA Foreign Function Interface
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ ``Software''), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+ ----------------------------------------------------------------------- */
+
+#include <ffi.h>
+#include <ffi_common.h>
+
+#include <stdlib.h>
+
+#define ROUND_UP(v, a) (((size_t)(v) + (a) - 1) & ~((a) - 1))
+#define ROUND_DOWN(v, a) (((size_t)(v) - (a) + 1) & ~((a) - 1))
+#define MIN_STACK_SIZE 64
+#define FIRST_ARG_SLOT 9
+#define DEBUG_LEVEL 0
+
+#define fldw(addr, fpreg) asm volatile ("fldw 0(%0), %%" #fpreg "L" : : "r"(addr) : #fpreg)
+#define fstw(fpreg, addr) asm volatile ("fstw %%" #fpreg "L, 0(%0)" : : "r"(addr))
+#define fldd(addr, fpreg) asm volatile ("fldd 0(%0), %%" #fpreg : : "r"(addr) : #fpreg)
+#define fstd(fpreg, addr) asm volatile ("fstd %%" #fpreg "L, 0(%0)" : : "r"(addr))
+
+#define debug(lvl, x...) do { if (lvl <= DEBUG_LEVEL) { printf(x); } } while (0)
+
+static inline int ffi_struct_type(ffi_type *t)
+{
+ size_t sz = t->size;
+
+ /* Small structure results are passed in registers,
+ larger ones are passed by pointer. */
+
+ if (sz <= 1)
+ return FFI_TYPE_UINT8;
+ else if (sz == 2)
+ return FFI_TYPE_UINT16;
+ else if (sz == 3)
+ return FFI_TYPE_SMALL_STRUCT1;
+ else if (sz == 4)
+ return FFI_TYPE_UINT32;
+ else if (sz <= 6)
+ return FFI_TYPE_SMALL_STRUCT2;
+ else if (sz <= 8)
+ return FFI_TYPE_UINT64;
+ else
+ return FFI_TYPE_STRUCT; /* else, we pass it by pointer. */
+}
+
+/* PA has a downward growing stack, which looks like this:
+
+ Offset
+ [ Variable args ]
+ SP = (4*(n+9)) arg word N
+ ...
+ SP-52 arg word 4
+ [ Fixed args ]
+ SP-48 arg word 3
+ SP-44 arg word 2
+ SP-40 arg word 1
+ SP-36 arg word 0
+ [ Frame marker ]
+ ...
+ SP-20 RP
+ SP-4 previous SP
+
+ First 4 non-FP 32-bit args are passed in gr26, gr25, gr24 and gr23
+ First 2 non-FP 64-bit args are passed in register pairs, starting
+ on an even numbered register (i.e. r26/r25 and r24+r23)
+ First 4 FP 32-bit arguments are passed in fr4L, fr5L, fr6L and fr7L
+ First 2 FP 64-bit arguments are passed in fr5 and fr7
+ The rest are passed on the stack starting at SP-52, but 64-bit
+ arguments need to be aligned to an 8-byte boundary
+
+ This means we can have holes either in the register allocation,
+ or in the stack. */
+
+/* ffi_prep_args is called by the assembly routine once stack space
+ has been allocated for the function's arguments
+
+ The following code will put everything into the stack frame
+ (which was allocated by the asm routine), and on return
+ the asm routine will load the arguments that should be
+ passed by register into the appropriate registers
+
+ NOTE: We load floating point args in this function... that means we
+ assume gcc will not mess with fp regs in here. */
+
+/*@-exportheader@*/
+void ffi_prep_args_LINUX(UINT32 *stack, extended_cif *ecif, unsigned bytes)
+/*@=exportheader@*/
+{
+ register unsigned int i;
+ register ffi_type **p_arg;
+ register void **p_argv;
+ unsigned int slot = FIRST_ARG_SLOT - 1;
+ char *dest_cpy;
+
+ debug(1, "%s: stack = %p, ecif = %p, bytes = %u\n", __FUNCTION__, stack, ecif, bytes);
+
+ p_arg = ecif->cif->arg_types;
+ p_argv = ecif->avalue;
+
+ for (i = 0; i < ecif->cif->nargs; i++)
+ {
+ int type = (*p_arg)->type;
+
+ switch (type)
+ {
+ case FFI_TYPE_SINT8:
+ slot++;
+ *(SINT32 *)(stack - slot) = *(SINT8 *)(*p_argv);
+ break;
+
+ case FFI_TYPE_UINT8:
+ slot++;
+ *(UINT32 *)(stack - slot) = *(UINT8 *)(*p_argv);
+ break;
+
+ case FFI_TYPE_SINT16:
+ slot++;
+ *(SINT32 *)(stack - slot) = *(SINT16 *)(*p_argv);
+ break;
+
+ case FFI_TYPE_UINT16:
+ slot++;
+ *(UINT32 *)(stack - slot) = *(UINT16 *)(*p_argv);
+ break;
+
+ case FFI_TYPE_UINT32:
+ case FFI_TYPE_SINT32:
+ case FFI_TYPE_POINTER:
+ slot++;
+ debug(3, "Storing UINT32 %u in slot %u\n", *(UINT32 *)(*p_argv), slot);
+ *(UINT32 *)(stack - slot) = *(UINT32 *)(*p_argv);
+ break;
+
+ case FFI_TYPE_UINT64:
+ case FFI_TYPE_SINT64:
+ slot += 2;
+ if (slot & 1)
+ slot++;
+
+ *(UINT32 *)(stack - slot) = (*(UINT64 *)(*p_argv)) >> 32;
+ *(UINT32 *)(stack - slot + 1) = (*(UINT64 *)(*p_argv)) & 0xffffffffUL;
+ break;
+
+ case FFI_TYPE_FLOAT:
+ /* First 4 args go in fr4L - fr7L */
+ slot++;
+ switch (slot - FIRST_ARG_SLOT)
+ {
+ case 0: fldw(*p_argv, fr4); break;
+ case 1: fldw(*p_argv, fr5); break;
+ case 2: fldw(*p_argv, fr6); break;
+ case 3: fldw(*p_argv, fr7); break;
+ default:
+ /* Other ones are just passed on the stack. */
+ debug(3, "Storing UINT32(float) in slot %u\n", slot);
+ *(UINT32 *)(stack - slot) = *(UINT32 *)(*p_argv);
+ break;
+ }
+ break;
+
+ case FFI_TYPE_DOUBLE:
+ slot += 2;
+ if (slot & 1)
+ slot++;
+ switch (slot - FIRST_ARG_SLOT + 1)
+ {
+ /* First 2 args go in fr5, fr7 */
+ case 2: fldd(*p_argv, fr5); break;
+ case 4: fldd(*p_argv, fr7); break;
+ default:
+ debug(3, "Storing UINT64(double) at slot %u\n", slot);
+ *(UINT64 *)(stack - slot) = *(UINT64 *)(*p_argv);
+ break;
+ }
+ break;
+
+ case FFI_TYPE_STRUCT:
+
+ /* Structs smaller or equal than 4 bytes are passed in one
+ register. Structs smaller or equal 8 bytes are passed in two
+ registers. Larger structures are passed by pointer. */
+
+ if((*p_arg)->size <= 4)
+ {
+ slot++;
+ dest_cpy = (char *)(stack - slot);
+ dest_cpy += 4 - (*p_arg)->size;
+ memcpy((char *)dest_cpy, (char *)*p_argv, (*p_arg)->size);
+ }
+ else if ((*p_arg)->size <= 8)
+ {
+ slot += 2;
+ if (slot & 1)
+ slot++;
+ dest_cpy = (char *)(stack - slot);
+ dest_cpy += 8 - (*p_arg)->size;
+ memcpy((char *)dest_cpy, (char *)*p_argv, (*p_arg)->size);
+ }
+ else
+ {
+ slot++;
+ *(UINT32 *)(stack - slot) = (UINT32)(*p_argv);
+ }
+ break;
+
+ default:
+ FFI_ASSERT(0);
+ }
+
+ p_arg++;
+ p_argv++;
+ }
+
+ /* Make sure we didn't mess up and scribble on the stack. */
+ {
+ int n;
+
+ debug(5, "Stack setup:\n");
+ for (n = 0; n < (bytes + 3) / 4; n++)
+ {
+ if ((n%4) == 0) { debug(5, "\n%08x: ", (unsigned int)(stack - n)); }
+ debug(5, "%08x ", *(stack - n));
+ }
+ debug(5, "\n");
+ }
+
+ FFI_ASSERT(slot * 4 <= bytes);
+
+ return;
+}
+
+static void ffi_size_stack_LINUX(ffi_cif *cif)
+{
+ ffi_type **ptr;
+ int i;
+ int z = 0; /* # stack slots */
+
+ for (ptr = cif->arg_types, i = 0; i < cif->nargs; ptr++, i++)
+ {
+ int type = (*ptr)->type;
+
+ switch (type)
+ {
+ case FFI_TYPE_DOUBLE:
+ case FFI_TYPE_UINT64:
+ case FFI_TYPE_SINT64:
+ z += 2 + (z & 1); /* must start on even regs, so we may waste one */
+ break;
+
+ case FFI_TYPE_STRUCT:
+ z += 1; /* pass by ptr, callee will copy */
+ break;
+
+ default: /* <= 32-bit values */
+ z++;
+ }
+ }
+
+ /* We can fit up to 6 args in the default 64-byte stack frame,
+ if we need more, we need more stack. */
+ if (z <= 6)
+ cif->bytes = MIN_STACK_SIZE; /* min stack size */
+ else
+ cif->bytes = 64 + ROUND_UP((z - 6) * sizeof(UINT32), MIN_STACK_SIZE);
+
+ debug(3, "Calculated stack size is %u bytes\n", cif->bytes);
+}
+
+/* Perform machine dependent cif processing. */
+ffi_status ffi_prep_cif_machdep(ffi_cif *cif)
+{
+ /* Set the return type flag */
+ switch (cif->rtype->type)
+ {
+ case FFI_TYPE_VOID:
+ case FFI_TYPE_FLOAT:
+ case FFI_TYPE_DOUBLE:
+ cif->flags = (unsigned) cif->rtype->type;
+ break;
+
+ case FFI_TYPE_STRUCT:
+ /* For the return type we have to check the size of the structures.
+ If the size is smaller or equal 4 bytes, the result is given back
+ in one register. If the size is smaller or equal 8 bytes than we
+ return the result in two registers. But if the size is bigger than
+ 8 bytes, we work with pointers. */
+ cif->flags = ffi_struct_type(cif->rtype);
+ break;
+
+ case FFI_TYPE_UINT64:
+ case FFI_TYPE_SINT64:
+ cif->flags = FFI_TYPE_UINT64;
+ break;
+
+ default:
+ cif->flags = FFI_TYPE_INT;
+ break;
+ }
+
+ /* Lucky us, because of the unique PA ABI we get to do our
+ own stack sizing. */
+ switch (cif->abi)
+ {
+ case FFI_LINUX:
+ ffi_size_stack_LINUX(cif);
+ break;
+
+ default:
+ FFI_ASSERT(0);
+ break;
+ }
+
+ return FFI_OK;
+}
+
+/*@-declundef@*/
+/*@-exportheader@*/
+extern void ffi_call_LINUX(void (*)(UINT32 *, extended_cif *, unsigned),
+ /*@out@*/ extended_cif *,
+ unsigned, unsigned,
+ /*@out@*/ unsigned *,
+ void (*fn)());
+/*@=declundef@*/
+/*@=exportheader@*/
+
+void ffi_call(/*@dependent@*/ ffi_cif *cif,
+ void (*fn)(),
+ /*@out@*/ void *rvalue,
+ /*@dependent@*/ void **avalue)
+{
+ extended_cif ecif;
+
+ ecif.cif = cif;
+ ecif.avalue = avalue;
+
+ /* If the return value is a struct and we don't have a return
+ value address then we need to make one. */
+
+ if ((rvalue == NULL) &&
+ (cif->rtype->type == FFI_TYPE_STRUCT))
+ {
+ /*@-sysunrecog@*/
+ ecif.rvalue = alloca(cif->rtype->size);
+ /*@=sysunrecog@*/
+ }
+ else
+ ecif.rvalue = rvalue;
+
+
+ switch (cif->abi)
+ {
+ case FFI_LINUX:
+ /*@-usedef@*/
+ debug(2, "Calling ffi_call_LINUX: ecif=%p, bytes=%u, flags=%u, rvalue=%p, fn=%p\n", &ecif, cif->bytes, cif->flags, ecif.rvalue, (void *)fn);
+ ffi_call_LINUX(ffi_prep_args_LINUX, &ecif, cif->bytes,
+ cif->flags, ecif.rvalue, fn);
+ /*@=usedef@*/
+ break;
+
+ default:
+ FFI_ASSERT(0);
+ break;
+ }
+}
+
+#if FFI_CLOSURES
+/* This is more-or-less an inverse of ffi_call -- we have arguments on
+ the stack, and we need to fill them into a cif structure and invoke
+ the user function. This really ought to be in asm to make sure
+ the compiler doesn't do things we don't expect. */
+UINT32 ffi_closure_inner_LINUX(ffi_closure *closure, UINT32 *stack)
+{
+ ffi_cif *cif;
+ void **avalue;
+ void *rvalue;
+ UINT32 ret[2]; /* function can return up to 64-bits in registers */
+ ffi_type **p_arg;
+ char *tmp;
+ int i, avn, slot = FIRST_ARG_SLOT - 1;
+ register UINT32 r28 asm("r28");
+
+ cif = closure->cif;
+
+ /* If returning via structure, callee will write to our pointer. */
+ if (cif->flags == FFI_TYPE_STRUCT)
+ rvalue = (void *)r28;
+ else
+ rvalue = &ret[0];
+
+ avalue = (void **)alloca(cif->nargs * FFI_SIZEOF_ARG);
+ avn = cif->nargs;
+ p_arg = cif->arg_types;
+
+ for (i = 0; i < avn; i++)
+ {
+ int type = (*p_arg)->type;
+
+ switch (type)
+ {
+ case FFI_TYPE_SINT8:
+ case FFI_TYPE_UINT8:
+ case FFI_TYPE_SINT16:
+ case FFI_TYPE_UINT16:
+ case FFI_TYPE_SINT32:
+ case FFI_TYPE_UINT32:
+ case FFI_TYPE_POINTER:
+ slot++;
+ avalue[i] = (char *)(stack - slot) + sizeof(UINT32) - (*p_arg)->size;
+ break;
+
+ case FFI_TYPE_SINT64:
+ case FFI_TYPE_UINT64:
+ slot += 2;
+ if (slot & 1)
+ slot++;
+ avalue[i] = (void *)(stack - slot);
+ break;
+
+ case FFI_TYPE_FLOAT:
+ slot++;
+ switch (slot - FIRST_ARG_SLOT)
+ {
+ case 0: fstw(fr4, (void *)(stack - slot)); break;
+ case 1: fstw(fr5, (void *)(stack - slot)); break;
+ case 2: fstw(fr6, (void *)(stack - slot)); break;
+ case 3: fstw(fr7, (void *)(stack - slot)); break;
+ }
+ avalue[i] = (void *)(stack - slot);
+ break;
+
+ case FFI_TYPE_DOUBLE:
+ slot += 2;
+ if (slot & 1)
+ slot++;
+ switch (slot - FIRST_ARG_SLOT + 1)
+ {
+ case 2: fstd(fr5, (void *)(stack - slot)); break;
+ case 4: fstd(fr7, (void *)(stack - slot)); break;
+ }
+ avalue[i] = (void *)(stack - slot);
+ break;
+
+ case FFI_TYPE_STRUCT:
+ /* Structs smaller or equal than 4 bytes are passed in one
+ register. Structs smaller or equal 8 bytes are passed in two
+ registers. Larger structures are passed by pointer. */
+ if((*p_arg)->size <= 4) {
+ slot++;
+ avalue[i] = (void *)(stack - slot) + sizeof(UINT32) -
+ (*p_arg)->size;
+ } else if ((*p_arg)->size <= 8) {
+ slot += 2;
+ if (slot & 1)
+ slot++;
+ avalue[i] = (void *)(stack - slot) + sizeof(UINT64) -
+ (*p_arg)->size;
+ } else {
+ slot++;
+ avalue[i] = (void *) *(stack - slot);
+ }
+ break;
+
+ default:
+ FFI_ASSERT(0);
+ }
+
+ p_arg++;
+ }
+
+ /* Invoke the closure. */
+ (closure->fun) (cif, rvalue, avalue, closure->user_data);
+
+ debug(3, "after calling function, ret[0] = %d, ret[1] = %d\n", ret[0], ret[1]);
+
+ /* Store the result */
+ switch (cif->flags)
+ {
+ case FFI_TYPE_UINT8:
+ *(stack - FIRST_ARG_SLOT) = *(UINT8 *)&ret[0];
+ break;
+ case FFI_TYPE_SINT8:
+ *(stack - FIRST_ARG_SLOT) = *(SINT8 *)&ret[0];
+ break;
+ case FFI_TYPE_UINT16:
+ *(stack - FIRST_ARG_SLOT) = *(UINT16 *)&ret[0];
+ break;
+ case FFI_TYPE_SINT16:
+ *(stack - FIRST_ARG_SLOT) = *(SINT16 *)&ret[0];
+ break;
+ case FFI_TYPE_INT:
+ case FFI_TYPE_UINT32:
+ *(stack - FIRST_ARG_SLOT) = *(UINT32 *)&ret[0];
+ break;
+ case FFI_TYPE_SINT32:
+ *(stack - FIRST_ARG_SLOT) = *(SINT32 *)&ret[0];
+ break;
+ case FFI_TYPE_SINT64:
+ case FFI_TYPE_UINT64:
+ *(stack - FIRST_ARG_SLOT) = *(UINT32 *)&ret[0];
+ *(stack - FIRST_ARG_SLOT - 1) = *(UINT32 *)&ret[1];
+ break;
+
+ case FFI_TYPE_DOUBLE:
+ fldd(rvalue, fr4);
+ break;
+
+ case FFI_TYPE_FLOAT:
+ fldw(rvalue, fr4);
+ break;
+
+ case FFI_TYPE_STRUCT:
+ /* Don't need a return value, done by caller. */
+ break;
+
+ case FFI_TYPE_SMALL_STRUCT1:
+ tmp = (void*)(stack - FIRST_ARG_SLOT);
+ tmp += 4 - cif->rtype->size;
+ memcpy((void*)tmp, &ret[0], cif->rtype->size);
+ break;
+
+ case FFI_TYPE_SMALL_STRUCT2:
+ *(stack - FIRST_ARG_SLOT) = ret[0];
+ *(stack - FIRST_ARG_SLOT - 1) = ret[1];
+ break;
+
+ case FFI_TYPE_POINTER:
+ case FFI_TYPE_VOID:
+ break;
+
+ default:
+ debug(0, "assert with cif->flags: %d\n",cif->flags);
+ FFI_ASSERT(0);
+ break;
+ }
+ return FFI_OK;
+}
+
+/* Fill in a closure to refer to the specified fun and user_data.
+ cif specifies the argument and result types for fun.
+ The cif must already be prep'ed. */
+
+void ffi_closure_LINUX(void);
+
+ffi_status
+ffi_prep_closure (ffi_closure* closure,
+ ffi_cif* cif,
+ void (*fun)(ffi_cif*,void*,void**,void*),
+ void *user_data)
+{
+ UINT32 *tramp = (UINT32 *)(closure->tramp);
+
+ FFI_ASSERT (cif->abi == FFI_LINUX);
+
+ /* Make a small trampoline that will branch to our
+ handler function. Use PC-relative addressing. */
+
+ tramp[0] = 0xeaa00000; /* b,l .+8, %r21 ; %r21 <- pc+8 */
+ tramp[1] = 0xd6a01c1e; /* depi 0,31,2, %r21 ; mask priv bits */
+ tramp[2] = 0x4aa10028; /* ldw 20(%r21), %r1 ; load plabel */
+ tramp[3] = 0x36b53ff1; /* ldo -8(%r21), %r21 ; get closure addr */
+ tramp[4] = 0x0c201096; /* ldw 0(%r1), %r22 ; address of handler */
+ tramp[5] = 0xeac0c000; /* bv %r0(%r22) ; branch to handler */
+ tramp[6] = 0x0c281093; /* ldw 4(%r1), %r19 ; GP of handler */
+ tramp[7] = ((UINT32)(ffi_closure_LINUX) & ~2);
+
+ /* Flush d/icache -- have to flush up 2 two lines because of
+ alignment. */
+ asm volatile (
+ "fdc 0(%0)\n"
+ "fdc %1(%0)\n"
+ "fic 0(%%sr4, %0)\n"
+ "fic %1(%%sr4, %0)\n"
+ "sync\n"
+ : : "r"((unsigned long)tramp & ~31), "r"(32 /* stride */));
+
+ closure->cif = cif;
+ closure->user_data = user_data;
+ closure->fun = fun;
+
+ return FFI_OK;
+}
+#endif
diff --git a/libffi/src/pa/ffitarget.h b/libffi/src/pa/ffitarget.h
new file mode 100644
index 0000000..b8bcad0
--- /dev/null
+++ b/libffi/src/pa/ffitarget.h
@@ -0,0 +1,57 @@
+/* -----------------------------------------------------------------*-C-*-
+ ffitarget.h - Copyright (c) 1996-2003 Red Hat, Inc.
+ Target configuration macros for hppa.
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ ``Software''), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+
+ ----------------------------------------------------------------------- */
+
+#ifndef LIBFFI_TARGET_H
+#define LIBFFI_TARGET_H
+
+/* ---- System specific configurations ----------------------------------- */
+
+#ifndef LIBFFI_ASM
+typedef unsigned long ffi_arg;
+typedef signed long ffi_sarg;
+
+typedef enum ffi_abi {
+ FFI_FIRST_ABI = 0,
+
+#ifdef PA
+ FFI_LINUX,
+ FFI_DEFAULT_ABI = FFI_LINUX,
+#endif
+
+ FFI_LAST_ABI = FFI_DEFAULT_ABI + 1
+} ffi_abi;
+#endif
+
+/* ---- Definitions for closures ----------------------------------------- */
+
+#define FFI_CLOSURES 1
+#define FFI_NATIVE_RAW_API 0
+
+#define FFI_TRAMPOLINE_SIZE 32
+
+#define FFI_TYPE_SMALL_STRUCT1 -1
+#define FFI_TYPE_SMALL_STRUCT2 -2
+#endif
+
diff --git a/libffi/src/pa/linux.S b/libffi/src/pa/linux.S
new file mode 100644
index 0000000..1a2ecdb
--- /dev/null
+++ b/libffi/src/pa/linux.S
@@ -0,0 +1,281 @@
+/* -----------------------------------------------------------------------
+ linux.S - (c) 2003-2004 Randolph Chung <tausq@debian.org>
+
+ HPPA Foreign Function Interface
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ ``Software''), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+ ----------------------------------------------------------------------- */
+
+#define LIBFFI_ASM
+#include <fficonfig.h>
+#include <ffi.h>
+
+ .text
+ .align 4
+
+ /* void ffi_call_LINUX(void (*)(char *, extended_cif *),
+ extended_cif *ecif,
+ unsigned bytes,
+ unsigned flags,
+ unsigned *rvalue,
+ void (*fn)());
+ */
+
+ .export ffi_call_LINUX,code
+ .import ffi_prep_args_LINUX,code
+
+ .type ffi_call_LINUX, @function
+.LFB1:
+ffi_call_LINUX:
+ .proc
+ .callinfo FRAME=64,CALLS,SAVE_RP,SAVE_SP,ENTRY_GR=4
+ .entry
+ stw %rp, -20(%sp)
+ copy %r3, %r1
+.LCFI11:
+
+ copy %sp, %r3
+.LCFI12:
+
+ /* Setup the stack for calling prep_args...
+ We want the stack to look like this:
+
+ [ Previous stack ] <- %r3
+
+ [ 64-bytes register save area ] <- %r4
+
+ [ Stack space for actual call, passed as ] <- %arg0
+ [ arg0 to ffi_prep_args_LINUX ]
+
+ [ Stack for calling prep_args ] <- %sp
+ */
+
+ stwm %r1, 64(%sp)
+ stw %r4, 12(%r3)
+.LCFI13:
+ copy %sp, %r4
+
+ addl %arg2, %r4, %arg0 /* arg stack */
+ stw %arg3, -48(%r3) /* save flags; we need it later */
+
+ /* Call prep_args:
+ %arg0(stack) -- set up above
+ %arg1(ecif) -- same as incoming param
+ %arg2(bytes) -- same as incoming param */
+ bl ffi_prep_args_LINUX,%r2
+ ldo 64(%arg0), %sp
+ ldo -64(%sp), %sp
+
+ /* now %sp should point where %arg0 was pointing. */
+
+ /* Load the arguments that should be passed in registers
+ The fp args were loaded by the prep_args function. */
+ ldw -36(%sp), %arg0
+ ldw -40(%sp), %arg1
+ ldw -44(%sp), %arg2
+ ldw -48(%sp), %arg3
+
+ /* in case the function is going to return a structure
+ we need to give it a place to put the result. */
+ ldw -52(%r3), %ret0 /* %ret0 <- rvalue */
+ ldw -56(%r3), %r22 /* %r22 <- function to call */
+ bl $$dyncall, %r31 /* Call the user function */
+ copy %r31, %rp
+
+ /* Prepare to store the result; we need to recover flags and rvalue. */
+ ldw -48(%r3), %r21 /* r21 <- flags */
+ ldw -52(%r3), %r20 /* r20 <- rvalue */
+
+ /* Store the result according to the return type. */
+
+checksmst1:
+ comib,<>,n FFI_TYPE_SMALL_STRUCT1, %r21, checksmst2
+ /* There is maybe a better way to handle 3 byte structs. */
+ sh2add %ret0,0,%ret0
+ sh2add %ret0,0,%ret0
+ sh2add %ret0,0,%ret0
+ sh2add %ret0,0,%ret0
+ b done
+ stw %ret0, 0(%r20)
+
+checksmst2:
+ comib,<>,n FFI_TYPE_SMALL_STRUCT2, %r21, checkint8
+ /* Up to now I don't have a way to handle 6/7 byte structs.
+ The values are left bounded in the registers. In the struct
+ itself they are left bounded. */
+ stw %ret0, 0(%r20)
+ b done
+ stw %ret1, 4(%r20)
+
+checkint8:
+ comib,<>,n FFI_TYPE_UINT8, %r21, checkint16
+ b done
+ stb %ret0, 0(%r20)
+
+checkint16:
+ comib,<>,n FFI_TYPE_UINT16, %r21, checkint32
+ b done
+ sth %ret0, 0(%r20)
+
+checkint32:
+ comib,<>,n FFI_TYPE_UINT32, %r21, checkint
+ b done
+ stw %ret0, 0(%r20)
+
+checkint:
+ comib,<>,n FFI_TYPE_INT, %r21, checkll
+ b done
+ stw %ret0, 0(%r20)
+
+checkll:
+ comib,<>,n FFI_TYPE_UINT64, %r21, checkdbl
+ stw %ret0, 0(%r20)
+ b done
+ stw %ret1, 4(%r20)
+
+checkdbl:
+ comib,<>,n FFI_TYPE_DOUBLE, %r21, checkfloat
+ b done
+ fstd %fr4,0(%r20)
+
+checkfloat:
+ comib,<>,n FFI_TYPE_FLOAT, %r21, done
+ fstw %fr4L,0(%r20)
+
+ /* structure returns are either handled by one of the
+ INT/UINT64 cases above, or, if passed by pointer,
+ is handled by the callee. */
+
+done:
+ /* all done, return */
+ copy %r4, %sp /* pop arg stack */
+ ldw 12(%r3), %r4
+ ldwm -64(%sp), %r3 /* .. and pop stack */
+ ldw -20(%sp), %rp
+ bv %r0(%rp)
+ nop
+ .exit
+ .procend
+.LFE1:
+
+ /* void ffi_closure_LINUX(void);
+ Called with closure argument in %r21 */
+ .export ffi_closure_LINUX,code
+ .import ffi_closure_inner_LINUX,code
+
+ .type ffi_closure_LINUX, @function
+.LFB2:
+ffi_closure_LINUX:
+ .proc
+ .callinfo FRAME=64,CALLS,SAVE_RP,SAVE_SP,ENTRY_GR=3
+ .entry
+
+ stw %rp, -20(%sp)
+.LCFI20:
+ copy %r3, %r1
+.LCFI21:
+ copy %sp, %r3
+.LCFI22:
+ stwm %r1, 64(%sp)
+
+ /* Put arguments onto the stack and call ffi_closure_inner. */
+ stw %arg0, -36(%r3)
+ stw %arg1, -40(%r3)
+ stw %arg2, -44(%r3)
+ stw %arg3, -48(%r3)
+
+ copy %r21, %arg0
+ bl ffi_closure_inner_LINUX, %r2
+ copy %r3, %arg1
+
+ ldwm -64(%sp), %r3
+ ldw -20(%sp), %rp
+ ldw -36(%sp), %ret0
+ bv %r0(%r2)
+ ldw -40(%sp), %ret1
+
+ .exit
+ .procend
+.LFE2:
+
+ .section ".eh_frame",EH_FRAME_FLAGS,@progbits
+.Lframe1:
+ .word .LECIE1-.LSCIE1 ;# Length of Common Information Entry
+.LSCIE1:
+ .word 0x0 ;# CIE Identifier Tag
+ .byte 0x1 ;# CIE Version
+ .ascii "\0" ;# CIE Augmentation
+ .uleb128 0x1 ;# CIE Code Alignment Factor
+ .sleb128 4 ;# CIE Data Alignment Factor
+ .byte 0x2 ;# CIE RA Column
+ .byte 0xc ;# DW_CFA_def_cfa
+ .uleb128 0x1e
+ .uleb128 0x0
+ .align 4
+.LECIE1:
+.LSFDE1:
+ .word .LEFDE1-.LASFDE1 ;# FDE Length
+.LASFDE1:
+ .word .LASFDE1-.Lframe1 ;# FDE CIE offset
+ .word .LFB1 ;# FDE initial location
+ .word .LFE1-.LFB1 ;# FDE address range
+
+ .byte 0x4 ;# DW_CFA_advance_loc4
+ .word .LCFI11-.LFB1
+ .byte 0x83 ;# DW_CFA_offset, column 0x3
+ .uleb128 0x0
+ .byte 0x11 ;# DW_CFA_offset_extended_sf; save r2 at [r30-20]
+ .uleb128 0x2
+ .sleb128 -5
+
+ .byte 0x4 ;# DW_CFA_advance_loc4
+ .word .LCFI12-.LCFI11
+ .byte 0xd ;# DW_CFA_def_cfa_register = r3
+ .uleb128 0x3
+
+ .byte 0x4 ;# DW_CFA_advance_loc4
+ .word .LCFI13-.LCFI12
+ .byte 0x84 ;# DW_CFA_offset, column 0x4
+ .uleb128 0x3
+
+ .align 4
+.LEFDE1:
+
+.LSFDE2:
+ .word .LEFDE2-.LASFDE2 ;# FDE Length
+.LASFDE2:
+ .word .LASFDE2-.Lframe1 ;# FDE CIE offset
+ .word .LFB2 ;# FDE initial location
+ .word .LFE2-.LFB2 ;# FDE address range
+ .byte 0x4 ;# DW_CFA_advance_loc4
+ .word .LCFI21-.LFB2
+ .byte 0x83 ;# DW_CFA_offset, column 0x3
+ .uleb128 0x0
+ .byte 0x11 ;# DW_CFA_offset_extended_sf
+ .uleb128 0x2
+ .sleb128 -5
+
+ .byte 0x4 ;# DW_CFA_advance_loc4
+ .word .LCFI12-.LCFI11
+ .byte 0xd ;# DW_CFA_def_cfa_register = r3
+ .uleb128 0x3
+
+ .align 4
+.LEFDE2:
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 20:01:54 +0000