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ST: Define and use a new jmpbuf. v5.0.57
This commit is contained in:
winlin
parent
7d47017a00
commit
eb2056db25
8 changed files with 104 additions and 162 deletions
192
trunk/3rdparty/st-srs/md.h
vendored
192
trunk/3rdparty/st-srs/md.h
vendored
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@ -56,6 +56,35 @@
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#define MAP_FAILED -1
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#endif
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/* We define the jmpbuf, because the system's is different in different OS */
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typedef struct _st_jmp_buf {
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/*
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* OS CPU SIZE
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* Darwin __amd64__/__x86_64__ long[8]
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* Darwin __aarch64__ long[22]
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* Linux __i386__ long[6]
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* Linux __amd64__/__x86_64__ long[8]
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* Linux __aarch64__ long[22]
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* Linux __arm__ long[16]
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* Linux __mips__/__mips64 long[13]
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* Linux __riscv long[14]
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* Linux __loongarch64 long[12]
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* Cygwin64 __amd64__/__x86_64__ long[8]
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*/
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long __jmpbuf[22];
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} _st_jmp_buf_t[1];
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extern int _st_md_cxt_save(_st_jmp_buf_t env);
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extern void _st_md_cxt_restore(_st_jmp_buf_t env, int val);
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/* Always use builtin setjmp/longjmp, use asm code. */
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#define MD_USE_BUILTIN_SETJMP
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#define MD_SETJMP(env) _st_md_cxt_save(env)
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#define MD_LONGJMP(env, val) _st_md_cxt_restore(env, val)
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#if defined(USE_LIBC_SETJMP)
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#error The libc setjmp is not supported now
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#endif
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/*****************************************
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* Platform specifics
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*/
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@ -66,14 +95,10 @@
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#define MD_ACCEPT_NB_INHERITED
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#define MD_HAVE_SOCKLEN_T
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#define MD_USE_BUILTIN_SETJMP
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#if defined(__amd64__) || defined(__x86_64__)
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#define JB_SP 12 /* The jmpbuf is int(4B) array, while MD_GET_SP covert to long(8B) pointer, so the JB_SP should be 12 which is 6*sizeof(long)/sizeof(int) */
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#define MD_GET_SP(_t) *((long *)&((_t)->context[JB_SP]))
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[6]))
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#elif defined(__aarch64__)
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/* MUST be SP*2 because context is int array */
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#define MD_GET_SP(_t) *((long *)&((_t)->context[13 * 2]))
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[13]))
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#else
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#error Unknown CPU architecture
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#endif
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@ -85,14 +110,6 @@
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MD_GET_SP(_thread) = (long) (_sp); \
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ST_END_MACRO
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#if defined(MD_USE_BUILTIN_SETJMP)
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#define MD_SETJMP(env) _st_md_cxt_save(env)
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#define MD_LONGJMP(env, val) _st_md_cxt_restore(env, val)
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extern int _st_md_cxt_save(jmp_buf env);
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extern void _st_md_cxt_restore(jmp_buf env, int val);
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#endif
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#define MD_GET_UTIME() \
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struct timeval tv; \
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(void) gettimeofday(&tv, NULL); \
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@ -120,112 +137,38 @@
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(void) gettimeofday(&tv, NULL); \
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return (tv.tv_sec * 1000000LL + tv.tv_usec)
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#if 1
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/*
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* On linux, there are a few styles of jmpbuf format. These vary based
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* on architecture/glibc combination.
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*
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* Most of the glibc based toggles were lifted from:
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* mozilla/nsprpub/pr/include/md/_linux.h
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*/
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/*
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* Starting with glibc 2.4, JB_SP definitions are not public anymore.
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* They, however, can still be found in glibc source tree in
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* architecture-specific "jmpbuf-offsets.h" files.
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* Most importantly, the content of jmp_buf is mangled by setjmp to make
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* it completely opaque (the mangling can be disabled by setting the
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* LD_POINTER_GUARD environment variable before application execution).
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* Therefore we will use built-in _st_md_cxt_save/_st_md_cxt_restore
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* functions as a setjmp/longjmp replacement wherever they are available
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* unless USE_LIBC_SETJMP is defined.
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*/
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#if defined(__i386__)
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#define MD_USE_BUILTIN_SETJMP
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#if defined(__GLIBC__) && __GLIBC__ >= 2
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#ifndef JB_SP
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#define JB_SP 4
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#endif
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#define MD_GET_SP(_t) (_t)->context[0].__jmpbuf[JB_SP]
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#else
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/* not an error but certainly cause for caution */
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#error "Untested use of old glibc on i386"
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#define MD_GET_SP(_t) (_t)->context[0].__jmpbuf[0].__sp
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#endif
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#elif defined(__amd64__) || defined(__x86_64__)
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#define MD_USE_BUILTIN_SETJMP
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#ifndef JB_RSP
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#define JB_RSP 6
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#endif
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#define MD_GET_SP(_t) (_t)->context[0].__jmpbuf[JB_RSP]
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#elif defined(__aarch64__)
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/* https://github.com/ossrs/state-threads/issues/9 */
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#define MD_USE_BUILTIN_SETJMP
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#define MD_GET_SP(_t) (_t)->context[0].__jmpbuf[13]
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#elif defined(__arm__)
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/* https://github.com/ossrs/state-threads/issues/1#issuecomment-244648573 */
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#define MD_USE_BUILTIN_SETJMP
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/* force to use glibc solution, hack the guard jmpbuf from michaeltalyansky */
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#ifdef USE_LIBC_SETJMP
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#undef MD_USE_BUILTIN_SETJMP
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#endif
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#if defined(__GLIBC__) && __GLIBC__ >= 2
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/* Merge from https://github.com/michaeltalyansky/state-threads/commit/56554a5c425aee8e7a73782eae23d74d83c4120a */
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#define MD_GET_SP(_t) (_t)->context[0].__jmpbuf[8]
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#else
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#error "ARM/Linux pre-glibc2 not supported yet"
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#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
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#elif defined(__mips64)
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/* https://github.com/ossrs/state-threads/issues/21 */
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#define MD_USE_BUILTIN_SETJMP
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[0]))
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#elif defined(__mips__)
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/* https://github.com/ossrs/state-threads/issues/21 */
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#define MD_USE_BUILTIN_SETJMP
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jb[0]))
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#elif defined(__riscv)
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/* https://github.com/ossrs/state-threads/pull/28 */
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#define MD_USE_BUILTIN_SETJMP
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[0]))
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#elif defined(__loongarch64)
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/* https://github.com/ossrs/state-threads/issues/24 */
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#define MD_USE_BUILTIN_SETJMP
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[0]))
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#else
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#error "Unknown CPU architecture"
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#endif /* Cases with common MD_INIT_CONTEXT and different SP locations */
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#define MD_INIT_CONTEXT(_thread, _sp, _main) \
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ST_BEGIN_MACRO \
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if (MD_SETJMP((_thread)->context)) \
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_main(); \
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MD_GET_SP(_thread) = (long) (_sp); \
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ST_END_MACRO
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#endif /* Cases with different MD_INIT_CONTEXT */
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#if defined(MD_USE_BUILTIN_SETJMP) && !defined(USE_LIBC_SETJMP)
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#define MD_SETJMP(env) _st_md_cxt_save(env)
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#define MD_LONGJMP(env, val) _st_md_cxt_restore(env, val)
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extern int _st_md_cxt_save(jmp_buf env);
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extern void _st_md_cxt_restore(jmp_buf env, int val);
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#if defined(__i386__)
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[4]))
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#elif defined(__amd64__) || defined(__x86_64__)
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[6]))
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#elif defined(__aarch64__)
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/* https://github.com/ossrs/state-threads/issues/9 */
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[13]))
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#elif defined(__arm__)
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/* https://github.com/ossrs/state-threads/issues/1#issuecomment-244648573 */
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[8]))
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#elif defined(__mips64)
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/* https://github.com/ossrs/state-threads/issues/21 */
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[0]))
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#elif defined(__mips__)
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/* https://github.com/ossrs/state-threads/issues/21 */
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[0]))
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#elif defined(__riscv)
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/* https://github.com/ossrs/state-threads/pull/28 */
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[0]))
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#elif defined(__loongarch64)
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/* https://github.com/ossrs/state-threads/issues/24 */
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[0]))
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#else
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#define MD_SETJMP(env) setjmp(env)
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#define MD_LONGJMP(env, val) longjmp(env, val)
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#endif
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#error "Unknown CPU architecture"
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#endif /* Cases with common MD_INIT_CONTEXT and different SP locations */
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#define MD_INIT_CONTEXT(_thread, _sp, _main) \
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ST_BEGIN_MACRO \
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if (MD_SETJMP((_thread)->context)) \
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_main(); \
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MD_GET_SP(_thread) = (long) (_sp); \
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ST_END_MACRO
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#elif defined (CYGWIN64)
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@ -237,8 +180,7 @@
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#define MD_USE_BUILTIN_SETJMP
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#if defined(__amd64__) || defined(__x86_64__)
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#define JB_SP 6 // The context is long(32) array, @see https://github.com/ossrs/state-threads/issues/20#issuecomment-887569093
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#define MD_GET_SP(_t) *((long *)&((_t)->context[JB_SP]))
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#define MD_GET_SP(_t) *((long *)&((_t)->context[0].__jmpbuf[6]))
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#else
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#error Unknown CPU architecture
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#endif
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@ -250,14 +192,6 @@
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MD_GET_SP(_thread) = (long) (_sp); \
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ST_END_MACRO
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#if defined(MD_USE_BUILTIN_SETJMP)
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#define MD_SETJMP(env) _st_md_cxt_save(env)
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#define MD_LONGJMP(env, val) _st_md_cxt_restore(env, val)
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extern int _st_md_cxt_save(jmp_buf env);
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extern void _st_md_cxt_restore(jmp_buf env, int val);
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#endif
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#define MD_GET_UTIME() \
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struct timeval tv; \
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(void) gettimeofday(&tv, NULL); \
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