diff options
Diffstat (limited to 'erts/emulator/hipe/hipe_arm.c')
-rw-r--r-- | erts/emulator/hipe/hipe_arm.c | 105 |
1 files changed, 25 insertions, 80 deletions
diff --git a/erts/emulator/hipe/hipe_arm.c b/erts/emulator/hipe/hipe_arm.c index b70b32947b..651d0e3a75 100644 --- a/erts/emulator/hipe/hipe_arm.c +++ b/erts/emulator/hipe/hipe_arm.c @@ -1,23 +1,23 @@ /* * %CopyrightBegin% - * - * Copyright Ericsson AB 2005-2009. All Rights Reserved. - * + * + * Copyright Ericsson AB 2005-2011. 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% */ -/* $Id$ - */ + + #include <stddef.h> /* offsetof() */ #ifdef HAVE_CONFIG_H #include "config.h" @@ -71,7 +71,7 @@ static struct segment { } curseg; #define in_area(ptr,start,nbytes) \ - ((unsigned long)((char*)(ptr) - (char*)(start)) < (nbytes)) + ((UWord)((char*)(ptr) - (char*)(start)) < (nbytes)) static void *new_code_mapping(void) { @@ -181,11 +181,9 @@ void *hipe_alloc_code(Uint nrbytes, Eterm callees, Eterm *trampolines, Process * curseg.base = base; curseg.code_pos = base; curseg.tramp_pos = (unsigned int*)((char*)base + SEGMENT_NRBYTES); -#if defined(__arm__) curseg.tramp_pos -= 2; curseg.tramp_pos[0] = 0xE51FF004; /* ldr pc, [pc,#-4] */ curseg.tramp_pos[1] = (unsigned int)&nbif_callemu; -#endif address = try_alloc(nrwords, nrcallees, callees, trampvec); if (!address) { @@ -214,11 +212,9 @@ static unsigned int *alloc_stub(Uint nrwords, unsigned int **tramp_callemu) curseg.base = base; curseg.code_pos = base; curseg.tramp_pos = (unsigned int*)((char*)base + SEGMENT_NRBYTES); -#if defined(__arm__) curseg.tramp_pos -= 2; curseg.tramp_pos[0] = 0xE51FF004; /* ldr pc, [pc,#-4] */ curseg.tramp_pos[1] = (unsigned int)&nbif_callemu; -#endif address = try_alloc(nrwords, 0, NIL, NULL); if (!address) { @@ -269,10 +265,8 @@ int hipe_patch_insn(void *address, Uint32 value, Eterm type) void *hipe_make_native_stub(void *beamAddress, unsigned int beamArity) { unsigned int *code; -#if defined(__arm__) unsigned int *tramp_callemu; int callemu_offset; -#endif /* * Native code calls BEAM via a stub looking as follows: @@ -288,13 +282,6 @@ void *hipe_make_native_stub(void *beamAddress, unsigned int beamArity) * (Trampolines are allowed to modify r12, but they don't.) */ -#if !defined(__arm__) - /* verify that 'ba' can reach nbif_callemu */ - if ((unsigned long)&nbif_callemu & ~0x01FFFFFCUL) - abort(); -#endif - -#if defined(__arm__) code = alloc_stub(4, &tramp_callemu); callemu_offset = ((int)&nbif_callemu - ((int)&code[2] + 8)) >> 2; if (!(callemu_offset >= -0x00800000 && callemu_offset <= 0x007FFFFF)) { @@ -302,11 +289,7 @@ void *hipe_make_native_stub(void *beamAddress, unsigned int beamArity) if (!(callemu_offset >= -0x00800000 && callemu_offset <= 0x007FFFFF)) abort(); } -#else - code = alloc_stub(4, &trampoline); -#endif -#if defined(__arm__) /* mov r0, #beamArity */ code[0] = 0xE3A00000 | (beamArity & 0xFF); /* ldr r8, [pc,#0] // beamAddress */ @@ -315,16 +298,6 @@ void *hipe_make_native_stub(void *beamAddress, unsigned int beamArity) code[2] = 0xEA000000 | (callemu_offset & 0x00FFFFFF); /* .long beamAddress */ code[3] = (unsigned int)beamAddress; -#else - /* addi r12,0,beamAddress@l */ - code[0] = 0x39800000 | ((unsigned long)beamAddress & 0xFFFF); - /* addi r0,0,beamArity */ - code[1] = 0x38000000 | (beamArity & 0x7FFF); - /* addis r12,r12,beamAddress@ha */ - code[2] = 0x3D8C0000 | at_ha((unsigned long)beamAddress); - /* ba nbif_callemu */ - code[3] = 0x48000002 | (unsigned long)&nbif_callemu; -#endif hipe_flush_icache_range(code, 4*sizeof(int)); @@ -334,60 +307,32 @@ void *hipe_make_native_stub(void *beamAddress, unsigned int beamArity) static void patch_b(Uint32 *address, Sint32 offset, Uint32 AA) { Uint32 oldI = *address; -#if defined(__arm__) Uint32 newI = (oldI & 0xFF000000) | (offset & 0x00FFFFFF); -#else - Uint32 newI = (oldI & 0xFC000001) | ((offset & 0x00FFFFFF) << 2) | (AA & 2); -#endif *address = newI; hipe_flush_icache_word(address); } int hipe_patch_call(void *callAddress, void *destAddress, void *trampoline) { -#if !defined(__arm__) - if ((Uint32)destAddress == ((Uint32)destAddress & 0x01FFFFFC)) { - /* The destination is in the [0,32MB[ range. - We can reach it with a ba/bla instruction. - This is the typical case for BIFs and primops. - It's also common for trap-to-BEAM stubs (on ppc32). */ - patch_b((Uint32*)callAddress, (Uint32)destAddress >> 2, 2); + Sint32 destOffset = ((Sint32)destAddress - ((Sint32)callAddress+8)) >> 2; + if (destOffset >= -0x800000 && destOffset <= 0x7FFFFF) { + /* The destination is within a [-32MB,+32MB[ range from us. + We can reach it with a b/bl instruction. + This is typical for nearby Erlang code. */ + patch_b((Uint32*)callAddress, destOffset, 0); } else { -#endif -#if defined(__arm__) - Sint32 destOffset = ((Sint32)destAddress - ((Sint32)callAddress+8)) >> 2; -#else - Sint32 destOffset = ((Sint32)destAddress - (Sint32)callAddress) >> 2; -#endif - if (destOffset >= -0x800000 && destOffset <= 0x7FFFFF) { - /* The destination is within a [-32MB,+32MB[ range from us. - We can reach it with a b/bl instruction. - This is typical for nearby Erlang code. */ - patch_b((Uint32*)callAddress, destOffset, 0); - } else { - /* The destination is too distant for b/bl/ba/bla. - Must do a b/bl to the trampoline. */ -#if defined(__arm__) - Sint32 trampOffset = ((Sint32)trampoline - ((Sint32)callAddress+8)) >> 2; -#else - Sint32 trampOffset = ((Sint32)trampoline - (Sint32)callAddress) >> 2; -#endif - if (trampOffset >= -0x800000 && trampOffset <= 0x7FFFFF) { - /* Update the trampoline's address computation. - (May be redundant, but we can't tell.) */ -#if defined(__arm__) - patch_imm32((Uint32*)trampoline+1, (Uint32)destAddress); -#else - patch_li((Uint32*)trampoline, (Uint32)destAddress); -#endif - /* Update this call site. */ - patch_b((Uint32*)callAddress, trampOffset, 0); - } else - return -1; - } -#if !defined(__arm__) + /* The destination is too distant for b/bl. + Must do a b/bl to the trampoline. */ + Sint32 trampOffset = ((Sint32)trampoline - ((Sint32)callAddress+8)) >> 2; + if (trampOffset >= -0x800000 && trampOffset <= 0x7FFFFF) { + /* Update the trampoline's address computation. + (May be redundant, but we can't tell.) */ + patch_imm32((Uint32*)trampoline+1, (Uint32)destAddress); + /* Update this call site. */ + patch_b((Uint32*)callAddress, trampOffset, 0); + } else + return -1; } -#endif return 0; } |