From c0b6c30a98c154a1ea190dd930b53dc4f155e67b Mon Sep 17 00:00:00 2001 From: Sverker Eriksson Date: Tue, 15 Nov 2011 12:27:29 +0100 Subject: hipe,erts: Allow hipe without floating point exceptions --- erts/emulator/beam/erl_process.c | 4 ++-- erts/emulator/beam/erl_process.h | 2 +- erts/emulator/hipe/hipe_amd64_bifs.m4 | 2 ++ erts/emulator/hipe/hipe_amd64_primops.h | 2 ++ erts/emulator/hipe/hipe_bif0.c | 20 ++++++++++++++++++++ erts/emulator/hipe/hipe_bif0.tab | 2 ++ erts/emulator/hipe/hipe_bif_list.m4 | 4 ++++ erts/emulator/hipe/hipe_mkliterals.c | 16 +++++++++++++++- erts/emulator/hipe/hipe_native_bif.c | 2 ++ erts/emulator/hipe/hipe_native_bif.h | 5 +++++ erts/emulator/hipe/hipe_primops.h | 4 ++++ erts/emulator/hipe/hipe_process.h | 3 +++ erts/emulator/hipe/hipe_x86.h | 2 ++ erts/emulator/hipe/hipe_x86_bifs.m4 | 2 ++ erts/emulator/hipe/hipe_x86_primops.h | 3 +++ 15 files changed, 69 insertions(+), 4 deletions(-) (limited to 'erts/emulator') diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c index a3c1c9577b..cd80eb849e 100644 --- a/erts/emulator/beam/erl_process.c +++ b/erts/emulator/beam/erl_process.c @@ -7136,7 +7136,7 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). p->pending_exit.bp = NULL; #endif -#if !defined(NO_FPE_SIGNALS) +#if !defined(NO_FPE_SIGNALS) || defined(HIPE) p->fp_exception = 0; #endif @@ -7310,7 +7310,7 @@ void erts_init_empty_process(Process *p) p->run_queue = ERTS_RUNQ_IX(0); #endif -#if !defined(NO_FPE_SIGNALS) +#if !defined(NO_FPE_SIGNALS) || defined(HIPE) p->fp_exception = 0; #endif diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h index 4027fade35..6ec1720b94 100644 --- a/erts/emulator/beam/erl_process.h +++ b/erts/emulator/beam/erl_process.h @@ -617,7 +617,7 @@ struct process { Uint min_heap_size; /* Minimum size of heap (in words). */ Uint min_vheap_size; /* Minimum size of virtual heap (in words). */ -#if !defined(NO_FPE_SIGNALS) +#if !defined(NO_FPE_SIGNALS) || defined(HIPE) volatile unsigned long fp_exception; #endif diff --git a/erts/emulator/hipe/hipe_amd64_bifs.m4 b/erts/emulator/hipe/hipe_amd64_bifs.m4 index 97a8267647..ec25c0b9b7 100644 --- a/erts/emulator/hipe/hipe_amd64_bifs.m4 +++ b/erts/emulator/hipe/hipe_amd64_bifs.m4 @@ -549,7 +549,9 @@ ASYM($1): /* * AMD64-specific primops. */ +#ifndef NO_FPE_SIGNALS noproc_primop_interface_0(nbif_handle_fp_exception, erts_restore_fpu) +#endif /* NO_FPE_SIGNALS */ /* * Implement gc_bif_interface_0 as nofail_primop_interface_0. diff --git a/erts/emulator/hipe/hipe_amd64_primops.h b/erts/emulator/hipe/hipe_amd64_primops.h index e3c7111997..55cb0eadb8 100644 --- a/erts/emulator/hipe/hipe_amd64_primops.h +++ b/erts/emulator/hipe/hipe_amd64_primops.h @@ -19,5 +19,7 @@ PRIMOP_LIST(am_inc_stack_0, &nbif_inc_stack_0) +#ifndef NO_FPE_SIGNALS PRIMOP_LIST(am_handle_fp_exception, &nbif_handle_fp_exception) +#endif PRIMOP_LIST(am_sse2_fnegate_mask, &sse2_fnegate_mask) diff --git a/erts/emulator/hipe/hipe_bif0.c b/erts/emulator/hipe/hipe_bif0.c index e7fb850530..cec22b3836 100644 --- a/erts/emulator/hipe/hipe_bif0.c +++ b/erts/emulator/hipe/hipe_bif0.c @@ -985,6 +985,26 @@ BIF_RETTYPE hipe_conv_big_to_float(BIF_ALIST_1) BIF_RET(res); } +#ifdef NO_FPE_SIGNALS + +/* + This is the current solution to make hipe run without FPE. + The native code is the same except that a call to this primop + is made after _every_ float operation to check the result. + The native fcheckerror still done later will detect if an + "emulated" FPE has occured. + We use p->hipe.float_result to avoid passing a 'double' argument, + which has its own calling convention (on amd64 at least). + Simple and slow... +*/ +void hipe_emulate_fpe(Process* p) +{ + if (!finite(p->hipe.float_result)) { + p->fp_exception = 1; + } +} +#endif + #if 0 /* XXX: unused */ /* * At least parts of this should be inlined in native code. diff --git a/erts/emulator/hipe/hipe_bif0.tab b/erts/emulator/hipe/hipe_bif0.tab index b6c6bede23..ce641365e9 100644 --- a/erts/emulator/hipe/hipe_bif0.tab +++ b/erts/emulator/hipe/hipe_bif0.tab @@ -140,3 +140,5 @@ atom bs_put_utf16le atom bs_get_utf16 atom bs_validate_unicode atom bs_validate_unicode_retract +atom emulate_fpe + diff --git a/erts/emulator/hipe/hipe_bif_list.m4 b/erts/emulator/hipe/hipe_bif_list.m4 index 48c7c1bc9b..942fa0c5cb 100644 --- a/erts/emulator/hipe/hipe_bif_list.m4 +++ b/erts/emulator/hipe/hipe_bif_list.m4 @@ -245,6 +245,10 @@ noproc_primop_interface_5(nbif_bs_put_big_integer, hipe_bs_put_big_integer) gc_bif_interface_0(nbif_check_get_msg, hipe_check_get_msg) +#ifdef NO_FPE_SIGNALS +nocons_nofail_primop_interface_0(nbif_emulate_fpe, hipe_emulate_fpe) +#endif + /* * SMP-specific stuff */ diff --git a/erts/emulator/hipe/hipe_mkliterals.c b/erts/emulator/hipe/hipe_mkliterals.c index 61e15f1d58..d07d14028c 100644 --- a/erts/emulator/hipe/hipe_mkliterals.c +++ b/erts/emulator/hipe/hipe_mkliterals.c @@ -293,6 +293,11 @@ static const struct literal { { "P_NRA", offsetof(struct process, hipe.nra) }, #endif { "P_NARITY", offsetof(struct process, hipe.narity) }, + { "P_FLOAT_RESULT", +# ifdef NO_FPE_SIGNALS + offsetof(struct process, hipe.float_result) +# endif + }, # if defined(ERTS_ENABLE_LOCK_CHECK) && defined(ERTS_SMP) { "P_BIF_CALLEE", offsetof(struct process, hipe.bif_callee) }, # endif @@ -491,7 +496,7 @@ static const struct rts_param { #endif }, { 14, "P_FP_EXCEPTION", -#if !defined(NO_FPE_SIGNALS) +#if !defined(NO_FPE_SIGNALS) || defined(HIPE) 1, offsetof(struct process, fp_exception) #endif }, @@ -502,6 +507,15 @@ static const struct rts_param { 1 #else 0 +#endif + }, + /* This flag is always defined, but its value is configuration-dependent. */ + { 16, "ERTS_NO_FPE_SIGNALS", + 1, +#if defined(NO_FPE_SIGNALS) + 1 +#else + 0 #endif }, /* This parameter is always defined, but its value depends on ERTS_SMP. */ diff --git a/erts/emulator/hipe/hipe_native_bif.c b/erts/emulator/hipe/hipe_native_bif.c index 77dee6f9e9..3be821f8f7 100644 --- a/erts/emulator/hipe/hipe_native_bif.c +++ b/erts/emulator/hipe/hipe_native_bif.c @@ -189,6 +189,8 @@ void hipe_fclearerror_error(Process *p) { #if !defined(NO_FPE_SIGNALS) erts_fp_check_init_error(&p->fp_exception); +#else + erl_exit(ERTS_ABORT_EXIT, "Emulated FPE not cleared by HiPE"); #endif } diff --git a/erts/emulator/hipe/hipe_native_bif.h b/erts/emulator/hipe/hipe_native_bif.h index 8c9dec180e..9e3a156fbc 100644 --- a/erts/emulator/hipe/hipe_native_bif.h +++ b/erts/emulator/hipe/hipe_native_bif.h @@ -93,6 +93,11 @@ BIF_RETTYPE hipe_bs_validate_unicode(BIF_ALIST_1); struct erl_bin_match_buffer; int hipe_bs_validate_unicode_retract(struct erl_bin_match_buffer*, Eterm); +#ifdef NO_FPE_SIGNALS +AEXTERN(void,nbif_emulate_fpe,(Process*)); +void hipe_emulate_fpe(Process*); +#endif + /* * Stuff that is different in SMP and non-SMP. */ diff --git a/erts/emulator/hipe/hipe_primops.h b/erts/emulator/hipe/hipe_primops.h index 94113ffcd8..38509c105b 100644 --- a/erts/emulator/hipe/hipe_primops.h +++ b/erts/emulator/hipe/hipe_primops.h @@ -77,6 +77,10 @@ PRIMOP_LIST(am_nonclosure_address, &nbif_nonclosure_address) PRIMOP_LIST(am_conv_big_to_float, &nbif_conv_big_to_float) PRIMOP_LIST(am_fclearerror_error, &nbif_fclearerror_error) +#ifdef NO_FPE_SIGNALS +PRIMOP_LIST(am_emulate_fpe, &nbif_emulate_fpe) +#endif + #if defined(__sparc__) #include "hipe_sparc_primops.h" #endif diff --git a/erts/emulator/hipe/hipe_process.h b/erts/emulator/hipe/hipe_process.h index 43f47d1a28..4ee99d78a2 100644 --- a/erts/emulator/hipe/hipe_process.h +++ b/erts/emulator/hipe/hipe_process.h @@ -42,6 +42,9 @@ struct hipe_process_state { void (*nra)(void); /* Native code return address. */ #endif unsigned int narity; /* Arity of BIF call, for stack walks. */ +#ifdef NO_FPE_SIGNALS + double float_result; /* to be checked for inf/NaN by hipe_emulate_fpe */ +#endif #if defined(ERTS_ENABLE_LOCK_CHECK) && defined(ERTS_SMP) void (*bif_callee)(void); /* When calling BIF's via debug wrapper */ #endif diff --git a/erts/emulator/hipe/hipe_x86.h b/erts/emulator/hipe/hipe_x86.h index f0f3c158af..97f09e38cd 100644 --- a/erts/emulator/hipe/hipe_x86.h +++ b/erts/emulator/hipe/hipe_x86.h @@ -49,7 +49,9 @@ static __inline__ int hipe_word32_address_ok(void *address) #define hipe_arch_name am_x86 extern void nbif_inc_stack_0(void); +#ifndef NO_FPE_SIGNALS extern void nbif_handle_fp_exception(void); +#endif /* for hipe_bifs_enter_code_2 */ extern void *hipe_alloc_code(Uint nrbytes, Eterm callees, Eterm *trampolines, Process *p); diff --git a/erts/emulator/hipe/hipe_x86_bifs.m4 b/erts/emulator/hipe/hipe_x86_bifs.m4 index 2ea69bde3c..3cb7d67be0 100644 --- a/erts/emulator/hipe/hipe_x86_bifs.m4 +++ b/erts/emulator/hipe/hipe_x86_bifs.m4 @@ -621,7 +621,9 @@ ASYM($1): /* * x86-specific primops. */ +#ifndef NO_FPE_SIGNALS noproc_primop_interface_0(nbif_handle_fp_exception, erts_restore_fpu) +#endif /* NO_FPE_SIGNALS */ /* * Implement gc_bif_interface_0 as nofail_primop_interface_0. diff --git a/erts/emulator/hipe/hipe_x86_primops.h b/erts/emulator/hipe/hipe_x86_primops.h index 96d2336bc5..111b1fa8bd 100644 --- a/erts/emulator/hipe/hipe_x86_primops.h +++ b/erts/emulator/hipe/hipe_x86_primops.h @@ -19,4 +19,7 @@ PRIMOP_LIST(am_inc_stack_0, &nbif_inc_stack_0) +#ifndef NO_FPE_SIGNALS PRIMOP_LIST(am_handle_fp_exception, &nbif_handle_fp_exception) +#endif + -- cgit v1.2.3