Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/code/nmethod.cpp
src/share/vm/code/nmethod.cpp
- changeset 8604
- 04d83ba48607
- parent 8185
- 5cece4584b8e
- parent 7535
- 7ae4e26cb1e0
- child 8856
- ac27a9c85bea
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| 8603:e134dc1879b7 | 8604:04d83ba48607 |
|---|---|
| 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" |
| 1168 // first few bytes. If an oop in the old code was there, that oop | 1174 // first few bytes. If an oop in the old code was there, that oop |
| 1169 // should not get GC'd. Skip the first few bytes of oops on | 1175 // should not get GC'd. Skip the first few bytes of oops on |
| 1170 // not-entrant methods. | 1176 // not-entrant methods. |
| 1171 address low_boundary = verified_entry_point(); | 1177 address low_boundary = verified_entry_point(); |
| 1172 if (!is_in_use()) { | 1178 if (!is_in_use()) { |
| 1173 low_boundary += NativeJump::instruction_size; | 1179 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 1174 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 1180 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 1175 // This means that the low_boundary is going to be a little too high. | 1181 // This means that the low_boundary is going to be a little too high. |
| 1176 // This shouldn't matter, since oops of non-entrant methods are never used. | 1182 // This shouldn't matter, since oops of non-entrant methods are never used. |
| 1177 // In fact, why are we bothering to look at oops in a non-entrant method?? | 1183 // In fact, why are we bothering to look at oops in a non-entrant method?? |
| 1178 } | 1184 } |
| 1216 // first few bytes. If an oop in the old code was there, that oop | 1222 // first few bytes. If an oop in the old code was there, that oop |
| 1217 // should not get GC'd. Skip the first few bytes of oops on | 1223 // should not get GC'd. Skip the first few bytes of oops on |
| 1218 // not-entrant methods. | 1224 // not-entrant methods. |
| 1219 address low_boundary = verified_entry_point(); | 1225 address low_boundary = verified_entry_point(); |
| 1220 if (!is_in_use()) { | 1226 if (!is_in_use()) { |
| 1221 low_boundary += NativeJump::instruction_size; | 1227 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 1222 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 1228 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 1223 // This means that the low_boundary is going to be a little too high. | 1229 // This means that the low_boundary is going to be a little too high. |
| 1224 // This shouldn't matter, since oops of non-entrant methods are never used. | 1230 // This shouldn't matter, since oops of non-entrant methods are never used. |
| 1225 // In fact, why are we bothering to look at oops in a non-entrant method?? | 1231 // In fact, why are we bothering to look at oops in a non-entrant method?? |
| 1226 } | 1232 } |
| 1461 } | 1467 } |
| 1462 | 1468 |
| 1463 // The caller can be calling the method statically or through an inline | 1469 // The caller can be calling the method statically or through an inline |
| 1464 // cache call. | 1470 // cache call. |
| 1465 if (!is_osr_method() && !is_not_entrant()) { | 1471 if (!is_osr_method() && !is_not_entrant()) { |
| 1466 NativeJump::patch_verified_entry(entry_point(), verified_entry_point(), | 1472 NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::patch_verified_entry(entry_point(), verified_entry_point(), |
| 1467 SharedRuntime::get_handle_wrong_method_stub()); | 1473 SharedRuntime::get_handle_wrong_method_stub()); |
| 1468 } | 1474 } |
| 1469 | 1475 |
| 1470 if (is_in_use()) { | 1476 if (is_in_use()) { |
| 1471 // It's a true state change, so mark the method as decompiled. | 1477 // It's a true state change, so mark the method as decompiled. |
| 1788 // first few bytes. If an oop in the old code was there, that oop | 1794 // first few bytes. If an oop in the old code was there, that oop |
| 1789 // should not get GC'd. Skip the first few bytes of oops on | 1795 // should not get GC'd. Skip the first few bytes of oops on |
| 1790 // not-entrant methods. | 1796 // not-entrant methods. |
| 1791 address low_boundary = verified_entry_point(); | 1797 address low_boundary = verified_entry_point(); |
| 1792 if (is_not_entrant()) { | 1798 if (is_not_entrant()) { |
| 1793 low_boundary += NativeJump::instruction_size; | 1799 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 1794 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 1800 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 1795 // (See comment above.) | 1801 // (See comment above.) |
| 1796 } | 1802 } |
| 1797 | 1803 |
| 1798 // The RedefineClasses() API can cause the class unloading invariant | 1804 // The RedefineClasses() API can cause the class unloading invariant |
| 1944 // first few bytes. If an oop in the old code was there, that oop | 1950 // first few bytes. If an oop in the old code was there, that oop |
| 1945 // should not get GC'd. Skip the first few bytes of oops on | 1951 // should not get GC'd. Skip the first few bytes of oops on |
| 1946 // not-entrant methods. | 1952 // not-entrant methods. |
| 1947 address low_boundary = verified_entry_point(); | 1953 address low_boundary = verified_entry_point(); |
| 1948 if (is_not_entrant()) { | 1954 if (is_not_entrant()) { |
| 1949 low_boundary += NativeJump::instruction_size; | 1955 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 1950 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 1956 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 1951 // (See comment above.) | 1957 // (See comment above.) |
| 1952 } | 1958 } |
| 1953 | 1959 |
| 1954 // The RedefineClasses() API can cause the class unloading invariant | 1960 // The RedefineClasses() API can cause the class unloading invariant |
| 2047 // first few bytes. If an oop in the old code was there, that oop | 2053 // first few bytes. If an oop in the old code was there, that oop |
| 2048 // should not get GC'd. Skip the first few bytes of oops on | 2054 // should not get GC'd. Skip the first few bytes of oops on |
| 2049 // not-entrant methods. | 2055 // not-entrant methods. |
| 2050 address low_boundary = verified_entry_point(); | 2056 address low_boundary = verified_entry_point(); |
| 2051 if (is_not_entrant()) { | 2057 if (is_not_entrant()) { |
| 2052 low_boundary += NativeJump::instruction_size; | 2058 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 2053 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 2059 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 2054 // (See comment above.) | 2060 // (See comment above.) |
| 2055 } | 2061 } |
| 2056 | 2062 |
| 2057 RelocIterator iter(this, low_boundary); | 2063 RelocIterator iter(this, low_boundary); |
| 2148 | 2154 |
| 2149 // Iterate over metadata calling this function. Used by RedefineClasses | 2155 // Iterate over metadata calling this function. Used by RedefineClasses |
| 2150 void nmethod::metadata_do(void f(Metadata*)) { | 2156 void nmethod::metadata_do(void f(Metadata*)) { |
| 2151 address low_boundary = verified_entry_point(); | 2157 address low_boundary = verified_entry_point(); |
| 2152 if (is_not_entrant()) { | 2158 if (is_not_entrant()) { |
| 2153 low_boundary += NativeJump::instruction_size; | 2159 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 2154 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 2160 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 2155 // (See comment above.) | 2161 // (See comment above.) |
| 2156 } | 2162 } |
| 2157 { | 2163 { |
| 2158 // Visit all immediate references that are embedded in the instruction stream. | 2164 // Visit all immediate references that are embedded in the instruction stream. |
| 2207 // first few bytes. If an oop in the old code was there, that oop | 2213 // first few bytes. If an oop in the old code was there, that oop |
| 2208 // should not get GC'd. Skip the first few bytes of oops on | 2214 // should not get GC'd. Skip the first few bytes of oops on |
| 2209 // not-entrant methods. | 2215 // not-entrant methods. |
| 2210 address low_boundary = verified_entry_point(); | 2216 address low_boundary = verified_entry_point(); |
| 2211 if (is_not_entrant()) { | 2217 if (is_not_entrant()) { |
| 2212 low_boundary += NativeJump::instruction_size; | 2218 low_boundary += NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::instruction_size; |
| 2213 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. | 2219 // %%% Note: On SPARC we patch only a 4-byte trap, not a full NativeJump. |
| 2214 // (See comment above.) | 2220 // (See comment above.) |
| 2215 } | 2221 } |
| 2216 | 2222 |
| 2217 RelocIterator iter(this, low_boundary); | 2223 RelocIterator iter(this, low_boundary); |
| 2713 | 2719 |
| 2714 if (is_zombie() || is_not_entrant() || is_unloaded()) | 2720 if (is_zombie() || is_not_entrant() || is_unloaded()) |
| 2715 return; | 2721 return; |
| 2716 | 2722 |
| 2717 // Make sure all the entry points are correctly aligned for patching. | 2723 // Make sure all the entry points are correctly aligned for patching. |
| 2718 NativeJump::check_verified_entry_alignment(entry_point(), verified_entry_point()); | 2724 NOT_MIPS64(NativeJump)MIPS64_ONLY(NativeGeneralJump)::check_verified_entry_alignment(entry_point(), verified_entry_point()); |
| 2719 | 2725 |
| 2720 // assert(method()->is_oop(), "must be valid"); | 2726 // assert(method()->is_oop(), "must be valid"); |
| 2721 | 2727 |
| 2722 ResourceMark rm; | 2728 ResourceMark rm; |
| 2723 | 2729 |
