From e34f3a0c685e4933f717b83b1ec10c593104125e Mon Sep 17 00:00:00 2001 From: Kostis Sagonas Date: Thu, 10 Feb 2011 00:19:42 +0200 Subject: Cleanup tags --- erts/emulator/hipe/hipe_ppc.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'erts/emulator/hipe/hipe_ppc.c') diff --git a/erts/emulator/hipe/hipe_ppc.c b/erts/emulator/hipe/hipe_ppc.c index 3a0beedb68..c641253ab5 100644 --- a/erts/emulator/hipe/hipe_ppc.c +++ b/erts/emulator/hipe/hipe_ppc.c @@ -1,23 +1,23 @@ /* * %CopyrightBegin% - * - * Copyright Ericsson AB 2004-2009. All Rights Reserved. - * + * + * Copyright Ericsson AB 2004-2011. 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 /* offsetof() */ #ifdef HAVE_CONFIG_H #include "config.h" -- cgit v1.2.3 From dbba32bf7743b2ec5952c884ab9c7007db24d760 Mon Sep 17 00:00:00 2001 From: Kostis Sagonas Date: Thu, 10 Feb 2011 02:32:27 +0200 Subject: Changes for the PPC64 backend --- erts/emulator/hipe/hipe_ppc.c | 110 +++++++++++++++--------------------------- 1 file changed, 38 insertions(+), 72 deletions(-) (limited to 'erts/emulator/hipe/hipe_ppc.c') diff --git a/erts/emulator/hipe/hipe_ppc.c b/erts/emulator/hipe/hipe_ppc.c index c641253ab5..bc25061a16 100644 --- a/erts/emulator/hipe/hipe_ppc.c +++ b/erts/emulator/hipe/hipe_ppc.c @@ -87,48 +87,6 @@ static struct segment { #define MAP_ANONYMOUS MAP_ANON #endif -#if defined(__powerpc64__) -static void *new_code_mapping(void) -{ - char *map_hint, *map_start; - - /* - * Allocate a new 32MB code segment in the low 2GB of the address space. - * - * This is problematic for several reasons: - * - Linux/ppc64 lacks the MAP_32BIT flag that Linux/x86-64 has. - * - The address space hint to mmap is only respected if that - * area is available. If it isn't, then mmap falls back to its - * defaults, which (according to testing) results in very high - * (and thus useless for us) addresses being returned. - * - Another mapping, presumably the brk, also occupies low addresses. - * - * As initial implementation, simply start allocating at the 0.5GB - * boundary. This leaves plenty of space for the brk before malloc - * needs to switch to mmap, while allowing for 1.5GB of code. - * - * A more robust implementation would be to parse /proc/self/maps, - * reserve all available space between (say) 0.5GB and 2GB with - * PROT_NONE MAP_NORESERVE mappings, and then allocate by releasing - * 32MB segments and re-mapping them properly. This would work on - * Linux/ppc64, I have no idea how things should be done on Darwin64. - */ - if (curseg.base) - map_hint = (char*)curseg.base + SEGMENT_NRBYTES; - else - map_hint = (char*)(512*1024*1024); /* 0.5GB */ - map_start = mmap(map_hint, SEGMENT_NRBYTES, - PROT_EXEC|PROT_READ|PROT_WRITE, - MAP_PRIVATE|MAP_ANONYMOUS, - -1, 0); - if (map_start != MAP_FAILED && - (((unsigned long)map_start + (SEGMENT_NRBYTES-1)) & ~0x7FFFFFFFUL)) { - fprintf(stderr, "mmap with hint %p returned code memory %p\r\n", map_hint, map_start); - abort(); - } - return map_start; -} -#else static void *new_code_mapping(void) { return mmap(0, SEGMENT_NRBYTES, @@ -136,7 +94,6 @@ static void *new_code_mapping(void) MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); } -#endif static int check_callees(Eterm callees) { @@ -182,20 +139,30 @@ static unsigned int *try_alloc(Uint nrwords, int nrcallees, Eterm callees, unsig unsigned int a = unsigned_val(tuple_val(mfa)[3]); unsigned int *trampoline = hipe_mfa_get_trampoline(m, f, a); if (!in_area(trampoline, base, SEGMENT_NRBYTES)) { +#if defined(__powerpc64__) + if (nrfreewords < 7) + return NULL; + nrfreewords -= 7; + tramp_pos = trampoline = tramp_pos - 7; + trampoline[0] = 0x3D600000; /* addis r11,r0,0 */ + trampoline[1] = 0x616B0000; /* ori r11,r11,0 */ + trampoline[2] = 0x796B07C6; /* rldicr r11,r11,32,31 */ + trampoline[3] = 0x656B0000; /* oris r11,r11,0 */ + trampoline[4] = 0x616B0000; /* ori r11,r11,0 */ + trampoline[5] = 0x7D6903A6; /* mtctr r11 */ + trampoline[6] = 0x4E800420; /* bctr */ + hipe_flush_icache_range(trampoline, 7*sizeof(int)); +#else if (nrfreewords < 4) return NULL; nrfreewords -= 4; tramp_pos = trampoline = tramp_pos - 4; -#if defined(__powerpc64__) - trampoline[0] = 0x3D600000; /* addis r11,0,0 */ - trampoline[1] = 0x616B0000; /* ori r11,r11,0 */ -#else trampoline[0] = 0x39600000; /* addi r11,r0,0 */ trampoline[1] = 0x3D6B0000; /* addis r11,r11,0 */ -#endif trampoline[2] = 0x7D6903A6; /* mtctr r11 */ trampoline[3] = 0x4E800420; /* bctr */ hipe_flush_icache_range(trampoline, 4*sizeof(int)); +#endif hipe_mfa_set_trampoline(m, f, a, trampoline); } trampvec[trampnr-1] = trampoline; @@ -281,21 +248,22 @@ static void patch_imm16(Uint32 *address, unsigned int imm16) } #if defined(__powerpc64__) +/* + * To load a 64-bit immediate value 'val' into Rd (Rd != R0): + * + * addis Rd, 0, val@highest // (val >> 48) & 0xFFFF + * ori Rd, Rd, val@higher // (val >> 32) & 0xFFFF + * rldicr Rd, Rd, 32, 31 + * oris Rd, Rd, val@h // (val >> 16) & 0xFFFF + * ori Rd, Rd, val@l // val & 0xFFFF + */ static void patch_li64(Uint32 *address, Uint64 value) { - patch_imm16(address+0, value >> 48);/* addis r,0,value@highest */ - patch_imm16(address+1, value >> 32);/* ori r,r,value@higher */ - /* sldi r,r,32 */ - patch_imm16(address+3, value >> 16);/* oris r,r,value@h */ - patch_imm16(address+4, value); /* ori r,r,value@l */ -} - -static int patch_li31(Uint32 *address, Uint32 value) -{ - if ((value >> 31) != 0) - return -1; - patch_imm16(address, value >> 16); /* addis r,0,value@h */ - patch_imm16(address+1, value); /* ori r,r,value@l */ + patch_imm16(address+0, value >> 48); + patch_imm16(address+1, value >> 32); + /* rldicr Rd, Rd, 32, 31 */ + patch_imm16(address+3, value >> 16); + patch_imm16(address+4, value); } void hipe_patch_load_fe(Uint *address, Uint value) @@ -308,11 +276,10 @@ int hipe_patch_insn(void *address, Uint64 value, Eterm type) switch (type) { case am_closure: case am_constant: - patch_li64((Uint32*)address, value); - return 0; case am_atom: case am_c_const: - return patch_li31((Uint32*)address, value); + patch_li64((Uint32*)address, value); + return 0; default: return -1; } @@ -442,34 +409,33 @@ static void patch_b(Uint32 *address, Sint32 offset, Uint32 AA) int hipe_patch_call(void *callAddress, void *destAddress, void *trampoline) { - if ((Uint32)destAddress == ((Uint32)destAddress & 0x01FFFFFC)) { + if ((UWord)destAddress == ((UWord)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); + patch_b((Uint32*)callAddress, (Sint32)destAddress >> 2, 2); } else { - Sint32 destOffset = ((Sint32)destAddress - (Sint32)callAddress) >> 2; + SWord destOffset = ((SWord)destAddress - (SWord)callAddress) >> 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); + patch_b((Uint32*)callAddress, (Sint32)destOffset, 0); } else { /* The destination is too distant for b/bl/ba/bla. Must do a b/bl to the trampoline. */ - Sint32 trampOffset = ((Sint32)trampoline - (Sint32)callAddress) >> 2; + SWord trampOffset = ((SWord)trampoline - (SWord)callAddress) >> 2; if (trampOffset >= -0x800000 && trampOffset <= 0x7FFFFF) { /* Update the trampoline's address computation. (May be redundant, but we can't tell.) */ #if defined(__powerpc64__) - /* This relies on the fact that we allocate code below 2GB. */ - patch_li31((Uint32*)trampoline, (Uint32)destAddress); + patch_li64((Uint32*)trampoline, (Uint64)destAddress); #else patch_li((Uint32*)trampoline, (Uint32)destAddress); #endif /* Update this call site. */ - patch_b((Uint32*)callAddress, trampOffset, 0); + patch_b((Uint32*)callAddress, (Sint32)trampOffset, 0); } else return -1; } -- cgit v1.2.3