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6812587: Use auxv to determine SPARC hardware features on Solaris

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A similar function to getisax(2) should be used to determine all possible instruction set extensions.

Reviewed-by: never, kvn
This commit is contained in:
Christian Thalinger 2009-03-11 14:16:13 -07:00
parent 7a871160ec
commit 66cecec230
6 changed files with 163 additions and 82 deletions
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51
hotspot/src/cpu/sparc/vm/vm_version_sparc.hpp
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@ -1,5 +1,5 @@
/*
* Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -25,34 +25,36 @@
class VM_Version: public Abstract_VM_Version {
protected:
enum Feature_Flag {
v8_instructions = 0,
hardware_int_muldiv = 1,
hardware_fsmuld = 2,
v9_instructions = 3,
vis1_instructions = 4,
vis2_instructions = 5,
sun4v_instructions = 6
v8_instructions = 0,
hardware_mul32 = 1,
hardware_div32 = 2,
hardware_fsmuld = 3,
v9_instructions = 4,
vis1_instructions = 5,
vis2_instructions = 6,
sun4v_instructions = 7
};
enum Feature_Flag_Set {
unknown_m = 0,
all_features_m = -1,
unknown_m = 0,
all_features_m = -1,
v8_instructions_m = 1 << v8_instructions,
hardware_int_muldiv_m = 1 << hardware_int_muldiv,
hardware_fsmuld_m = 1 << hardware_fsmuld,
v9_instructions_m = 1 << v9_instructions,
vis1_instructions_m = 1 << vis1_instructions,
vis2_instructions_m = 1 << vis2_instructions,
sun4v_m = 1 << sun4v_instructions,
v8_instructions_m = 1 << v8_instructions,
hardware_mul32_m = 1 << hardware_mul32,
hardware_div32_m = 1 << hardware_div32,
hardware_fsmuld_m = 1 << hardware_fsmuld,
v9_instructions_m = 1 << v9_instructions,
vis1_instructions_m = 1 << vis1_instructions,
vis2_instructions_m = 1 << vis2_instructions,
sun4v_m = 1 << sun4v_instructions,
generic_v8_m = v8_instructions_m | hardware_int_muldiv_m | hardware_fsmuld_m,
generic_v9_m = generic_v8_m | v9_instructions_m | vis1_instructions_m,
ultra3_m = generic_v9_m | vis2_instructions_m,
generic_v8_m = v8_instructions_m | hardware_mul32_m | hardware_div32_m | hardware_fsmuld_m,
generic_v9_m = generic_v8_m | v9_instructions_m,
ultra3_m = generic_v9_m | vis1_instructions_m | vis2_instructions_m,
// Temporary until we have something more accurate
niagara1_unique_m = sun4v_m,
niagara1_m = generic_v9_m | niagara1_unique_m
niagara1_unique_m = sun4v_m,
niagara1_m = generic_v9_m | niagara1_unique_m
};
static int _features;
@ -62,7 +64,7 @@ protected:
static int determine_features();
static int platform_features(int features);
static bool is_niagara1(int features) { return (features & niagara1_m) == niagara1_m; }
static bool is_niagara1(int features) { return (features & sun4v_m) != 0; }
static int maximum_niagara1_processor_count() { return 32; }
// Returns true if the platform is in the niagara line and
@ -76,7 +78,8 @@ public:
// Instruction support
static bool has_v8() { return (_features & v8_instructions_m) != 0; }
static bool has_v9() { return (_features & v9_instructions_m) != 0; }
static bool has_hardware_int_muldiv() { return (_features & hardware_int_muldiv_m) != 0; }
static bool has_hardware_mul32() { return (_features & hardware_mul32_m) != 0; }
static bool has_hardware_div32() { return (_features & hardware_div32_m) != 0; }
static bool has_hardware_fsmuld() { return (_features & hardware_fsmuld_m) != 0; }
static bool has_vis1() { return (_features & vis1_instructions_m) != 0; }
static bool has_vis2() { return (_features & vis2_instructions_m) != 0; }