From 1675253c138a2fe58902bd361a014d6796c12d37 Mon Sep 17 00:00:00 2001 From: Stephen Adams Date: Wed, 26 Jul 1995 20:44:08 +0000 Subject: [PATCH] Merged in changes for new compiler. --- v8/src/microcode/cmpintmd/hppa.h | 84 +++++++++++++++++++------------- 1 file changed, 50 insertions(+), 34 deletions(-) diff --git a/v8/src/microcode/cmpintmd/hppa.h b/v8/src/microcode/cmpintmd/hppa.h index b523c3e99..f459ad458 100644 --- a/v8/src/microcode/cmpintmd/hppa.h +++ b/v8/src/microcode/cmpintmd/hppa.h @@ -1,6 +1,6 @@ /* -*-C-*- -$Id: hppa.h,v 1.50 1994/02/04 01:01:15 gjr Exp $ +$Id: hppa.h,v 1.51 1995/07/26 20:44:08 adams Exp $ Copyright (c) 1989-1994 Massachusetts Institute of Technology @@ -86,6 +86,7 @@ typedef unsigned short format_word; #ifndef C_FUNC_PTR_IS_CLOSURE # define interface_to_C ep_interface_to_C # define interface_to_scheme ep_interface_to_scheme +# define interface_to_scheme_new ep_interface_to_scheme_new #endif /* Utilities for manipulating absolute subroutine calls. @@ -114,15 +115,20 @@ extern void ((unsigned long) (nullify_p))); \ } -/* Interrupt/GC polling. */ +/* OLD Interrupt/GC polling. */ -/* The length of the GC recovery code that precedes an entry. - On the HP-PA a "ble, ldi" instruction sequence. +/* OLD The length of the GC recovery code that precedes an entry. + OLD On the HP-PA a "ble, ldi" instruction sequence. */ -#define ENTRY_PREFIX_LENGTH 8 +/* OLD #define ENTRY_PREFIX_LENGTH 8*/ + +#define ENTRY_PREFIX_LENGTH 0 /* + +THIS IS OLD: + The instructions for a normal entry should be something like COMBT,>=,N Rfree,Rmemtop,interrupt @@ -142,6 +148,25 @@ extern void COMB instruction will have to be nullified whenever the interrupt branch is processed. +THIS IS NEW: + + The instructions for a normal entry should be something like + + entry_label + COMBT,>= rs_free,rs_memtop,interrupt_label + LDW REGBLOCK_MEMTOP(0,rs_regblock),rs_memtop + ... + interrupt_label + BLE new_procedure_interrupt_hook(4,rs_ble) + LDI #args,1 + WORD interrupt_label-entry_label-3 ; offset + + + Continuations are similar, replacing new_procedure_interrupt_hook + with new_continuation_interrupt_hook. Closures are similar except + that the entry point is in rs_closure so there is no need for an + offest word, and the hook is new_closure_interrupt_hook. + */ /* Compiled closures */ @@ -193,9 +218,9 @@ extern void - 8: NON_MARKED header - 4: Format word - 2: 0xC (GC Offset to start of block from .+2) - 0: BLE 4(4,3) ; call trampoline_to_interface + 0: BLE -16(4,3) ; call trampoline_to_interface 4: LDI index,28 - 8: trampoline dependent storage (0 - 3 longwords) + 8: trampoline dependent storage (currently 1 - 4 longwords) TRAMPOLINE_ENTRY_SIZE is the size in longwords of the machine dependent portion of a trampoline, including the GC and format @@ -220,6 +245,12 @@ extern void Note: this flushes both caches because the words may fall in a cache line that already has an association in the i-cache because a different trampoline or a closure are in it. + + Note: The first storage word ALWAYS has the number of actual + operands that must be stored on the stack when the trampoline is + invoked. This is fixed and known for each kind of trampoline. It + is required so that the trampoline can save these registers on the + stack before invoking the (possibly C written) handler. */ #define TRAMPOLINE_ENTRY_SIZE 3 @@ -241,9 +272,12 @@ extern void \ PC = ((unsigned long *) (entry_address)); \ \ - /* BLE 4(4,3) */ \ + /* was: BLE 4(4,3) */ \ + /* *PC = ((unsigned long) 0xe4602008); */ \ + \ + /* BLE -16(4,3) */ \ \ - *PC = ((unsigned long) 0xe4602008); \ + *PC = ((unsigned long) 0xe47f3fe5); \ \ /* LDO index(0),28 */ \ /* This assumes that index is >= 0. */ \ @@ -640,7 +674,7 @@ DEFUN (assemble_12, (inst), union branch_inst inst) static unsigned long hppa_closure_hook = 0; static unsigned long -DEFUN (C_closure_entry_point, (C_closure), unsigned long C_closure) +DEFUN (C_closure_entry_point, (closure), unsigned long C_closure) { if ((C_closure & 0x3) != 0x2) return (C_closure); @@ -680,15 +714,14 @@ static unsigned long * bkpt_minus_proceed_thunk_start, * bkpt_minus_proceed_thunk, * bkpt_closure_proceed_thunk, - * bkpt_closure_proceed_thunk_end, - * bkpt_proceed_buffer = ((unsigned long *) NULL); + * bkpt_closure_proceed_thunk_end; #define FAHRENHEIT 451 static void DEFUN_VOID (bkpt_init) { - int i, this_size, max_size; + int i; union branch_inst instr; extern void EXFUN (bkpt_normal_proceed, (void)); extern void EXFUN (bkpt_plus_proceed, (void)); @@ -743,25 +776,6 @@ DEFUN_VOID (bkpt_init) bkpt_closure_proceed_thunk_end = ((unsigned long *) (C_closure_entry_point ((unsigned long) bkpt_closure_proceed_end))); - - max_size = (bkpt_closure_proceed_thunk_end - bkpt_closure_proceed_thunk); - this_size = (bkpt_plus_proceed_thunk - bkpt_normal_proceed_thunk); - if (this_size > max_size) - max_size = this_size; - this_size = (bkpt_closure_proceed_thunk - bkpt_minus_proceed_thunk_start); - if (this_size > max_size) - max_size = this_size; - this_size = (bkpt_minus_proceed_thunk_start - bkpt_plus_proceed_thunk); - if (this_size > max_size) - max_size = this_size; - - bkpt_proceed_buffer = ((unsigned long *) - (malloc (max_size * (sizeof (unsigned long))))); - if (bkpt_proceed_buffer == ((unsigned long *) NULL)) - { - outf_fatal ("Unable to allocate the breakpoint buffer.\n"); - termination_init_error (); - } return; } @@ -909,7 +923,6 @@ DEFUN (bkpt_p, (entry_point), PTR entry_point) Boolean DEFUN (do_bkpt_proceed, (value), unsigned long * value) { - unsigned long * buffer = ((unsigned long *) bkpt_proceed_buffer); SCHEME_OBJECT ep = (STACK_POP ()); SCHEME_OBJECT handle = (STACK_POP ()); SCHEME_OBJECT state = (STACK_POP ()); @@ -921,6 +934,7 @@ DEFUN (do_bkpt_proceed, (value), unsigned long * value) case BKPT_KIND_CLOSURE: { int i, len; + unsigned long * buffer = ((unsigned long *) Constant_Top); unsigned long * clos_entry = (OBJECT_ADDRESS (FAST_MEMORY_REF (handle, 4))); SCHEME_OBJECT real_entry_point; @@ -942,6 +956,7 @@ DEFUN (do_bkpt_proceed, (value), unsigned long * value) case BKPT_KIND_NORMAL: { int i, len; + unsigned long * buffer = ((unsigned long *) Constant_Top); len = (bkpt_plus_proceed_thunk - bkpt_normal_proceed_thunk); for (i = 0; i < (len - 2); i++) @@ -962,7 +977,7 @@ DEFUN (do_bkpt_proceed, (value), unsigned long * value) * value = ((unsigned long) ((OBJECT_ADDRESS (ep)) + 2)); return (TRUE); } - + case BKPT_KIND_BL_INST: case BKPT_KIND_BLE_INST: default: @@ -975,6 +990,7 @@ DEFUN (do_bkpt_proceed, (value), unsigned long * value) long offset; int i, len, clobber; union branch_inst new, old; + unsigned long * buffer = ((unsigned long *) Constant_Top); unsigned long * instrs = ((unsigned long *) (OBJECT_ADDRESS (ep))); unsigned long * block; -- 2.25.1