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Diffstat (limited to 'erts/emulator/hipe/hipe_arm_asm.m4')
| -rw-r--r-- | erts/emulator/hipe/hipe_arm_asm.m4 | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/erts/emulator/hipe/hipe_arm_asm.m4 b/erts/emulator/hipe/hipe_arm_asm.m4 new file mode 100644 index 0000000000..b9a696ffff --- /dev/null +++ b/erts/emulator/hipe/hipe_arm_asm.m4 @@ -0,0 +1,199 @@ +changecom(`/*', `*/')dnl +/* + * %CopyrightBegin% + * + * Copyright Ericsson AB 2005-2009. All Rights Reserved. + * + * The contents of this file are subject to the Erlang Public License, + * Version 1.1, (the "License"); you may not use this file except in + * compliance with the License. You should have received a copy of the + * Erlang Public License along with this software. If not, it can be + * retrieved online at http://www.erlang.org/. + * + * Software distributed under the License is distributed on an "AS IS" + * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See + * the License for the specific language governing rights and limitations + * under the License. + * + * %CopyrightEnd% + */ +/* + * $Id$ + */ +`#ifndef HIPE_ARM_ASM_H +#define HIPE_ARM_ASM_H' + +/* + * Tunables. + */ +define(LEAF_WORDS,16)dnl number of stack words for leaf functions +define(NR_ARG_REGS,3)dnl admissible values are 0 to 6, inclusive + +`#define ARM_LEAF_WORDS 'LEAF_WORDS + +/* + * Reserved registers. + */ +`#define P r11' +`#define NSP r10' +`#define HP r9' +`#define TEMP_LR r8' + +/* + * Context switching macros. + * + * RESTORE_CONTEXT and RESTORE_CONTEXT_QUICK do not affect + * the condition register. + */ +`#define SAVE_CONTEXT_QUICK \ + mov TEMP_LR, lr' + +`#define RESTORE_CONTEXT_QUICK \ + mov lr, TEMP_LR' + +`#define SAVE_CACHED_STATE \ + str HP, [P, #P_HP]; \ + str NSP, [P, #P_NSP]' + +`#define RESTORE_CACHED_STATE \ + ldr HP, [P, #P_HP]; \ + ldr NSP, [P, #P_NSP]' + +`#define SAVE_CONTEXT_BIF \ + mov TEMP_LR, lr; \ + str HP, [P, #P_HP]' + +`#define RESTORE_CONTEXT_BIF \ + ldr HP, [P, #P_HP]' + +`#define SAVE_CONTEXT_GC \ + mov TEMP_LR, lr; \ + str lr, [P, #P_NRA]; \ + str NSP, [P, #P_NSP]; \ + str HP, [P, #P_HP]' + +`#define RESTORE_CONTEXT_GC \ + ldr HP, [P, #P_HP]' + +/* + * Argument (parameter) registers. + */ +`#define ARM_NR_ARG_REGS 'NR_ARG_REGS +`#define NR_ARG_REGS 'NR_ARG_REGS + +define(defarg,`define(ARG$1,`$2')dnl +#`define ARG'$1 $2' +)dnl + +ifelse(eval(NR_ARG_REGS >= 1),0,, +`defarg(0,`r1')')dnl +ifelse(eval(NR_ARG_REGS >= 2),0,, +`defarg(1,`r2')')dnl +ifelse(eval(NR_ARG_REGS >= 3),0,, +`defarg(2,`r3')')dnl +ifelse(eval(NR_ARG_REGS >= 4),0,, +`defarg(3,`r4')')dnl +ifelse(eval(NR_ARG_REGS >= 5),0,, +`defarg(4,`r5')')dnl +ifelse(eval(NR_ARG_REGS >= 6),0,, +`defarg(5,`r6')')dnl + +/* + * TEMP_ARG0: + * Used in nbif_stack_trap_ra to preserve the return value. + * Must be a C callee-save register. + * Must be otherwise unused in the return path. + * + * TEMP_ARG0: + * Used in hipe_arm_inc_stack to preserve the return address + * (TEMP_LR contains the caller's saved return address). + * Must be a C callee-save register. + * Must be otherwise unused in the call path. + */ +`#define TEMP_ARG0 r7' + +dnl XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX +dnl X X +dnl X hipe_arm_glue.S support X +dnl X X +dnl XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + +dnl +dnl LOAD_ARG_REGS +dnl +define(LAR_1,`ldr ARG$1, [P, #P_ARG$1] ; ')dnl +define(LAR_N,`ifelse(eval($1 >= 0),0,,`LAR_N(eval($1-1))LAR_1($1)')')dnl +define(LOAD_ARG_REGS,`LAR_N(eval(NR_ARG_REGS-1))')dnl +`#define LOAD_ARG_REGS 'LOAD_ARG_REGS + +dnl +dnl STORE_ARG_REGS +dnl +define(SAR_1,`str ARG$1, [P, #P_ARG$1] ; ')dnl +define(SAR_N,`ifelse(eval($1 >= 0),0,,`SAR_N(eval($1-1))SAR_1($1)')')dnl +define(STORE_ARG_REGS,`SAR_N(eval(NR_ARG_REGS-1))')dnl +`#define STORE_ARG_REGS 'STORE_ARG_REGS + +dnl XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX +dnl X X +dnl X hipe_arm_bifs.m4 support X +dnl X X +dnl XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + +dnl +dnl NBIF_ARG(DST,ARITY,ARGNO) +dnl Access a formal parameter. +dnl It will be a memory load via NSP when ARGNO >= NR_ARG_REGS. +dnl It will be a register move when 0 <= ARGNO < NR_ARG_REGS; if +dnl the source and destination are the same, the move is suppressed. +dnl +define(NBIF_MOVE_REG,`ifelse($1,$2,`# mov $1, $2',`mov $1, $2')')dnl +define(NBIF_REG_ARG,`NBIF_MOVE_REG($1,ARG$2)')dnl +define(NBIF_STK_LOAD,`ldr $1, [NSP, #$2]')dnl +define(NBIF_STK_ARG,`NBIF_STK_LOAD($1,eval(4*(($2-$3)-1)))')dnl +define(NBIF_ARG,`ifelse(eval($3 >= NR_ARG_REGS),0,`NBIF_REG_ARG($1,$3)',`NBIF_STK_ARG($1,$2,$3)')')dnl +`/* #define NBIF_ARG_1_0 'NBIF_ARG(r1,1,0)` */' +`/* #define NBIF_ARG_2_0 'NBIF_ARG(r1,2,0)` */' +`/* #define NBIF_ARG_2_1 'NBIF_ARG(r2,2,1)` */' +`/* #define NBIF_ARG_3_0 'NBIF_ARG(r1,3,0)` */' +`/* #define NBIF_ARG_3_1 'NBIF_ARG(r2,3,1)` */' +`/* #define NBIF_ARG_3_2 'NBIF_ARG(r3,3,2)` */' +`/* #define NBIF_ARG_5_0 'NBIF_ARG(r1,5,0)` */' +`/* #define NBIF_ARG_5_1 'NBIF_ARG(r2,5,1)` */' +`/* #define NBIF_ARG_5_2 'NBIF_ARG(r3,5,2)` */' +`/* #define NBIF_ARG_5_3 'NBIF_ARG(r4,5,3)` */' +`/* #define NBIF_ARG_5_4 'NBIF_ARG(r5,5,4)` */' + +dnl +dnl NBIF_RET(ARITY) +dnl Generates a return from a native BIF, taking care to pop +dnl any stacked formal parameters. +dnl May only be used in BIF/primop wrappers where SAVE_CONTEXT +dnl has saved LR in TEMP_LR. +dnl +define(NSP_RETN,`add NSP, NSP, #$1 + mov pc, TEMP_LR')dnl +define(NSP_RET0,`mov pc, TEMP_LR')dnl +define(RET_POP,`ifelse(eval($1 > NR_ARG_REGS),0,0,eval(4*($1 - NR_ARG_REGS)))')dnl +define(NBIF_RET_N,`ifelse(eval($1),0,`NSP_RET0',`NSP_RETN($1)')')dnl +define(NBIF_RET,`NBIF_RET_N(eval(RET_POP($1)))')dnl +`/* #define NBIF_RET_0 'NBIF_RET(0)` */' +`/* #define NBIF_RET_1 'NBIF_RET(1)` */' +`/* #define NBIF_RET_2 'NBIF_RET(2)` */' +`/* #define NBIF_RET_3 'NBIF_RET(3)` */' +`/* #define NBIF_RET_5 'NBIF_RET(5)` */' + +dnl +dnl QUICK_CALL_RET(CFUN,ARITY) +dnl Used in nocons_nofail and noproc primop interfaces to optimise +dnl SAVE_CONTEXT_QUICK; bl CFUN; RESTORE_CONTEXT_QUICK; NBIF_RET(ARITY). +dnl +define(NBIF_POP_N,`ifelse(eval($1),0,`',`add NSP, NSP, #$1 ; ')')dnl +define(QUICK_CALL_RET,`NBIF_POP_N(eval(RET_POP($2)))b $1')dnl +`/* #define QUICK_CALL_RET_F_0 'QUICK_CALL_RET(F,0)` */' +`/* #define QUICK_CALL_RET_F_1 'QUICK_CALL_RET(F,1)` */' +`/* #define QUICK_CALL_RET_F_2 'QUICK_CALL_RET(F,2)` */' +`/* #define QUICK_CALL_RET_F_3 'QUICK_CALL_RET(F,3)` */' +`/* #define QUICK_CALL_RET_F_5 'QUICK_CALL_RET(F,5)` */' + +`#endif /* HIPE_ARM_ASM_H */' |