+/*
+ * very-low-level utilities for runtime support
+ */
+
+/*
+ * This software is part of the SBCL system. See the README file for
+ * more information.
+ *
+ * This software is derived from the CMU CL system, which was
+ * written at Carnegie Mellon University and released into the
+ * public domain. The software is in the public domain and is
+ * provided with absolutely no warranty. See the COPYING and CREDITS
+ * files for more information.
+ */
+\f
#include "sbcl.h"
#include "lispregs.h"
#include "globals.h"
#include "genesis/fdefn.h"
#include "genesis/closure.h"
+#include "genesis/funcallable-instance.h"
#include "genesis/return-pc.h"
#include "genesis/simple-fun.h"
#include "genesis/static-symbols.h"
/* Nested lisp -> C calls may have clobbered gp. */
lw gp, framesize-16(sp)
+ /* Mark us as in C land. */
+ sw reg_CSP, foreign_function_call_active
+
/* Set the pseudo-atomic flag. */
li reg_NL4, 0
addu reg_ALLOC, 1
.set reorder
- /* Mark us as in C land. */
- sw reg_CSP, foreign_function_call_active
-
/* Save LISP state. */
subu reg_NL0, reg_ALLOC, 1
sw reg_NL0, dynamic_space_free_pointer
move reg_CFP, reg_CSP
addu reg_CSP, reg_CFP, 32
+ /* Mark us as in C land. */
+ sw reg_CSP, foreign_function_call_active
+
/* Set the pseudo-atomic flag. */
.set noreorder
li reg_NL4, 0
addu reg_ALLOC, 1
.set reorder
- /* Mark us as in C land. */
- sw reg_CSP, foreign_function_call_active
-
/* Convert the return address to an offset and save it on the stack. */
subu reg_NFP, reg_LIP, reg_CODE
addu reg_NFP, OTHER_POINTER_LOWTAG
.word NIL /* name */
.word NIL /* arglist */
.word NIL /* type */
+ .word NIL /* xrefs */
LEAF(undefined_tramp)
/* Point reg_CODE to the header and tag it as function, since
the debugger regards a function pointer in reg_CODE which
doesn't point to a code object as undefined function. */
lui reg_CODE, %hi(undefined_tramp)
addiu reg_CODE, %lo(undefined_tramp)
- addiu reg_CODE, - 24 + FUN_POINTER_LOWTAG
+ addiu reg_CODE, -SIMPLE_FUN_CODE_OFFSET
.set noreorder
b 1f
break 0x0, trap_Cerror
.word NIL /* name */
.word NIL /* arglist */
.word NIL /* type */
+ .word NIL /* xrefs */
LEAF(closure_tramp)
lw reg_LEXENV, FDEFN_FUN_OFFSET(reg_FDEFN)
lw reg_CODE, CLOSURE_FUN_OFFSET(reg_LEXENV)
END(closure_tramp)
/*
+ * The trampoline for funcallable instances
+ */
+ .globl funcallable_instance_tramp
+ .align 3
+ .word SIMPLE_FUN_HEADER_WIDETAG
+funcallable_instance_tramp = . + 1
+ .word funcallable_instance_tramp
+ .word NIL
+ .word NIL
+ .word NIL
+ .word NIL
+ .word NIL
+
+ lw reg_LEXENV, FUNCALLABLE_INSTANCE_FUNCTION_OFFSET(reg_LEXENV)
+ lw reg_CODE, CLOSURE_FUN_OFFSET(reg_LEXENV)
+ addu reg_LIP, reg_CODE, SIMPLE_FUN_CODE_OFFSET
+ jr reg_LIP
+ nop
+
+/*
* Function-end breakpoint magic. This is truely magic, the code is
* copied and has to be relocatable. It also needs a properly aligned
* header tag after the fun_end_breakpoint_guts symbol.
*/
+
+/*
+ * For an explanation of the magic involved in function-end
+ * breakpoints, see the implementation in ppc-assem.S.
+ */
+
.align 3 /* minimum alignment for a lisp object */
LEAF(fun_end_breakpoint_guts)
.set noreorder
- .word RETURN_PC_HEADER_WIDETAG
+ .word RETURN_PC_HEADER_WIDETAG + 0x800
b multiple_value_return
nop
.set reorder
multiple_value_return:
FEXPORT(fun_end_breakpoint_trap)
- break 0x0, trap_FunEndBreakpoint
+ .set noreorder
b multiple_value_return
+ break 0x0, trap_FunEndBreakpoint
+ .set reorder
EXPORT(fun_end_breakpoint_end)
END(fun_end_breakpoint_guts)
+
+
+ .align 3 /* minimum alignment for a lisp object */
+ LEAF(do_pending_interrupt)
+ break 0x0, trap_PendingInterrupt
+ jr reg_LIP
+ END(do_pending_interrupt)