Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/code/nmethod.cpp
src/share/vm/code/nmethod.cpp
- changeset 9041
- 95a08233f46c
- parent 8997
- f8a45a60bc6b
- parent 8856
- ac27a9c85bea
- child 9203
- 53eec13fbaa5
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| 9040:69aec2ca5d90 | 9041:95a08233f46c |
|---|---|
| 18 * | 18 * |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 * or visit www.oracle.com if you need additional information or have any | 20 * or visit www.oracle.com if you need additional information or have any |
| 21 * questions. | 21 * questions. |
| 22 * | 22 * |
| 23 */ | |
| 24 | |
| 25 /* | |
| 26 * This file has been modified by Loongson Technology in 2015. These | |
| 27 * modifications are Copyright (c) 2015 Loongson Technology, and are made | |
| 28 * available on the same license terms set forth above. | |
| 23 */ | 29 */ |
| 24 | 30 |
| 25 #include "precompiled.hpp" | 31 #include "precompiled.hpp" |
| 26 #include "code/codeCache.hpp" | 32 #include "code/codeCache.hpp" |
| 27 #include "code/compiledIC.hpp" | 33 #include "code/compiledIC.hpp" |
| 1173 // first few bytes. If an oop in the old code was there, that oop | 1179 // first few bytes. If an oop in the old code was there, that oop |
| 1174 // should not get GC'd. Skip the first few bytes of oops on | 1180 // should not get GC'd. Skip the first few bytes of oops on |
| 1175 // not-entrant methods. | 1181 // not-entrant methods. |
| 1176 address low_boundary = verified_entry_point(); | 1182 address low_boundary = verified_entry_point(); |
| 1177 if (!is_in_use()) { | 1183 if (!is_in_use()) { |
| 1178 low_boundary += NativeJump::instruction_size; | 1184 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 1179 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 1185 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 1180 // This means that the low_boundary is going to be a little too high. | 1186 // This means that the low_boundary is going to be a little too high. |
| 1181 // This shouldn't matter, since oops of non-entrant methods are never used. | 1187 // This shouldn't matter, since oops of non-entrant methods are never used. |
| 1182 // In fact, why are we bothering to look at oops in a non-entrant method?? | 1188 // In fact, why are we bothering to look at oops in a non-entrant method?? |
| 1183 } | 1189 } |
| 1221 // first few bytes. If an oop in the old code was there, that oop | 1227 // first few bytes. If an oop in the old code was there, that oop |
| 1222 // should not get GC'd. Skip the first few bytes of oops on | 1228 // should not get GC'd. Skip the first few bytes of oops on |
| 1223 // not-entrant methods. | 1229 // not-entrant methods. |
| 1224 address low_boundary = verified_entry_point(); | 1230 address low_boundary = verified_entry_point(); |
| 1225 if (!is_in_use()) { | 1231 if (!is_in_use()) { |
| 1226 low_boundary += NativeJump::instruction_size; | 1232 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 1227 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 1233 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 1228 // This means that the low_boundary is going to be a little too high. | 1234 // This means that the low_boundary is going to be a little too high. |
| 1229 // This shouldn't matter, since oops of non-entrant methods are never used. | 1235 // This shouldn't matter, since oops of non-entrant methods are never used. |
| 1230 // In fact, why are we bothering to look at oops in a non-entrant method?? | 1236 // In fact, why are we bothering to look at oops in a non-entrant method?? |
| 1231 } | 1237 } |
| 1466 } | 1472 } |
| 1467 | 1473 |
| 1468 // The caller can be calling the method statically or through an inline | 1474 // The caller can be calling the method statically or through an inline |
| 1469 // cache call. | 1475 // cache call. |
| 1470 if (!is_osr_method() && !is_not_entrant()) { | 1476 if (!is_osr_method() && !is_not_entrant()) { |
| 1471 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), | 1477 NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::patch_verified_entry(entry_point(), verified_entry_point(), |
| 1472 SharedRuntime::get_handle_wrong_method_stub()); | 1478 SharedRuntime::get_handle_wrong_method_stub()); |
| 1473 } | 1479 } |
| 1474 | 1480 |
| 1475 if (is_in_use()) { | 1481 if (is_in_use()) { |
| 1476 // It's a true state change, so mark the method as decompiled. | 1482 // It's a true state change, so mark the method as decompiled. |
| 1792 // first few bytes. If an oop in the old code was there, that oop | 1798 // first few bytes. If an oop in the old code was there, that oop |
| 1793 // should not get GC'd. Skip the first few bytes of oops on | 1799 // should not get GC'd. Skip the first few bytes of oops on |
| 1794 // not-entrant methods. | 1800 // not-entrant methods. |
| 1795 address low_boundary = verified_entry_point(); | 1801 address low_boundary = verified_entry_point(); |
| 1796 if (is_not_entrant()) { | 1802 if (is_not_entrant()) { |
| 1797 low_boundary += NativeJump::instruction_size; | 1803 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 1798 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 1804 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 1799 // (See comment above.) | 1805 // (See comment above.) |
| 1800 } | 1806 } |
| 1801 | 1807 |
| 1802 // The RedefineClasses() API can cause the class unloading invariant | 1808 // The RedefineClasses() API can cause the class unloading invariant |
| 1948 // first few bytes. If an oop in the old code was there, that oop | 1954 // first few bytes. If an oop in the old code was there, that oop |
| 1949 // should not get GC'd. Skip the first few bytes of oops on | 1955 // should not get GC'd. Skip the first few bytes of oops on |
| 1950 // not-entrant methods. | 1956 // not-entrant methods. |
| 1951 address low_boundary = verified_entry_point(); | 1957 address low_boundary = verified_entry_point(); |
| 1952 if (is_not_entrant()) { | 1958 if (is_not_entrant()) { |
| 1953 low_boundary += NativeJump::instruction_size; | 1959 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 1954 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 1960 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 1955 // (See comment above.) | 1961 // (See comment above.) |
| 1956 } | 1962 } |
| 1957 | 1963 |
| 1958 // The RedefineClasses() API can cause the class unloading invariant | 1964 // The RedefineClasses() API can cause the class unloading invariant |
| 2051 // first few bytes. If an oop in the old code was there, that oop | 2057 // first few bytes. If an oop in the old code was there, that oop |
| 2052 // should not get GC'd. Skip the first few bytes of oops on | 2058 // should not get GC'd. Skip the first few bytes of oops on |
| 2053 // not-entrant methods. | 2059 // not-entrant methods. |
| 2054 address low_boundary = verified_entry_point(); | 2060 address low_boundary = verified_entry_point(); |
| 2055 if (is_not_entrant()) { | 2061 if (is_not_entrant()) { |
| 2056 low_boundary += NativeJump::instruction_size; | 2062 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 2057 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 2063 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 2058 // (See comment above.) | 2064 // (See comment above.) |
| 2059 } | 2065 } |
| 2060 | 2066 |
| 2061 RelocIterator iter(this, low_boundary); | 2067 RelocIterator iter(this, low_boundary); |
| 2152 | 2158 |
| 2153 // Iterate over metadata calling this function. Used by RedefineClasses | 2159 // Iterate over metadata calling this function. Used by RedefineClasses |
| 2154 void nmethod::metadata_do(void f(Metadata*)) { | 2160 void nmethod::metadata_do(void f(Metadata*)) { |
| 2155 address low_boundary = verified_entry_point(); | 2161 address low_boundary = verified_entry_point(); |
| 2156 if (is_not_entrant()) { | 2162 if (is_not_entrant()) { |
| 2157 low_boundary += NativeJump::instruction_size; | 2163 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 2158 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 2164 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 2159 // (See comment above.) | 2165 // (See comment above.) |
| 2160 } | 2166 } |
| 2161 { | 2167 { |
| 2162 // Visit all immediate references that are embedded in the instruction stream. | 2168 // Visit all immediate references that are embedded in the instruction stream. |
| 2211 // first few bytes. If an oop in the old code was there, that oop | 2217 // first few bytes. If an oop in the old code was there, that oop |
| 2212 // should not get GC'd. Skip the first few bytes of oops on | 2218 // should not get GC'd. Skip the first few bytes of oops on |
| 2213 // not-entrant methods. | 2219 // not-entrant methods. |
| 2214 address low_boundary = verified_entry_point(); | 2220 address low_boundary = verified_entry_point(); |
| 2215 if (is_not_entrant()) { | 2221 if (is_not_entrant()) { |
| 2216 low_boundary += NativeJump::instruction_size; | 2222 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 2217 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 2223 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 2218 // (See comment above.) | 2224 // (See comment above.) |
| 2219 } | 2225 } |
| 2220 | 2226 |
| 2221 RelocIterator iter(this, low_boundary); | 2227 RelocIterator iter(this, low_boundary); |
| 2717 | 2723 |
| 2718 if (is_zombie() || is_not_entrant() || is_unloaded()) | 2724 if (is_zombie() || is_not_entrant() || is_unloaded()) |
| 2719 return; | 2725 return; |
| 2720 | 2726 |
| 2721 // Make sure all the entry points are correctly aligned for patching. | 2727 // Make sure all the entry points are correctly aligned for patching. |
| 2722 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | 2728 NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::check_verified_entry_alignment(entry_point(), verified_entry_point()); |
| 2723 | 2729 |
| 2724 // assert(method()->is_oop(), "must be valid"); | 2730 // assert(method()->is_oop(), "must be valid"); |
| 2725 | 2731 |
| 2726 ResourceMark rm; | 2732 ResourceMark rm; |
| 2727 | 2733 |
