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Diffstat (limited to '')
| -rw-r--r-- | nsprpub/pr/include/md/_linux.h | 724 |
1 files changed, 724 insertions, 0 deletions
diff --git a/nsprpub/pr/include/md/_linux.h b/nsprpub/pr/include/md/_linux.h new file mode 100644 index 0000000000..ad57d08330 --- /dev/null +++ b/nsprpub/pr/include/md/_linux.h @@ -0,0 +1,724 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* + * This file is used by not only Linux but also other glibc systems + * such as GNU/Hurd and GNU/k*BSD. + */ + +#ifndef nspr_linux_defs_h___ +#define nspr_linux_defs_h___ + +#include "prthread.h" + +/* + * Internal configuration macros + */ + +#define PR_LINKER_ARCH "linux" +#define _PR_SI_SYSNAME "LINUX" +#ifdef __powerpc64__ +#define _PR_SI_ARCHITECTURE "ppc64" +#elif defined(__powerpc__) +#define _PR_SI_ARCHITECTURE "ppc" +#elif defined(__alpha) +#define _PR_SI_ARCHITECTURE "alpha" +#elif defined(__ia64__) +#define _PR_SI_ARCHITECTURE "ia64" +#elif defined(__x86_64__) +#define _PR_SI_ARCHITECTURE "x86-64" +#elif defined(__mc68000__) +#define _PR_SI_ARCHITECTURE "m68k" +#elif defined(__sparc__) && defined(__arch64__) +#define _PR_SI_ARCHITECTURE "sparc64" +#elif defined(__sparc__) +#define _PR_SI_ARCHITECTURE "sparc" +#elif defined(__i386__) +#define _PR_SI_ARCHITECTURE "x86" +#elif defined(__mips__) +#define _PR_SI_ARCHITECTURE "mips" +#elif defined(__arm__) +#define _PR_SI_ARCHITECTURE "arm" +#elif defined(__aarch64__) +#define _PR_SI_ARCHITECTURE "aarch64" +#elif defined(__hppa__) +#define _PR_SI_ARCHITECTURE "hppa" +#elif defined(__s390x__) +#define _PR_SI_ARCHITECTURE "s390x" +#elif defined(__s390__) +#define _PR_SI_ARCHITECTURE "s390" +#elif defined(__sh__) +#define _PR_SI_ARCHITECTURE "sh" +#elif defined(__avr32__) +#define _PR_SI_ARCHITECTURE "avr32" +#elif defined(__m32r__) +#define _PR_SI_ARCHITECTURE "m32r" +#elif defined(__or1k__) +#define _PR_SI_ARCHITECTURE "or1k" +#elif defined(__riscv) && (__riscv_xlen == 32) +#define _PR_SI_ARCHITECTURE "riscv32" +#elif defined(__riscv) && (__riscv_xlen == 64) +#define _PR_SI_ARCHITECTURE "riscv64" +#elif defined(__e2k__) +#define _PR_SI_ARCHITECTURE "e2k" +#elif defined(__arc__) +#define _PR_SI_ARCHITECTURE "arc" +#elif defined(__nios2__) +#define _PR_SI_ARCHITECTURE "nios2" +#elif defined(__microblaze__) +#define _PR_SI_ARCHITECTURE "microblaze" +#elif defined(__nds32__) +#define _PR_SI_ARCHITECTURE "nds32" +#elif defined(__xtensa__) +#define _PR_SI_ARCHITECTURE "xtensa" +#elif defined(__loongarch64) +#define _PR_SI_ARCHITECTURE "loongarch64" +#else +#error "Unknown CPU architecture" +#endif +#define PR_DLL_SUFFIX ".so" + +#define _PR_VMBASE 0x30000000 +#define _PR_STACK_VMBASE 0x50000000 +#define _MD_DEFAULT_STACK_SIZE 65536L +#define _MD_MMAP_FLAGS MAP_PRIVATE + +#if defined(__aarch64__) || defined(__mips__) +#define _MD_MINIMUM_STACK_SIZE 0x20000 +#endif + +#undef HAVE_STACK_GROWING_UP + +/* + * Elf linux supports dl* functions + */ +#define HAVE_DLL +#define USE_DLFCN +#if defined(ANDROID) +#define NO_DLOPEN_NULL +#endif + +#if defined(__FreeBSD_kernel__) || defined(__GNU__) +#define _PR_HAVE_SOCKADDR_LEN +#endif + +#if defined(__i386__) +#define _PR_HAVE_ATOMIC_OPS +#define _MD_INIT_ATOMIC() +extern PRInt32 _PR_x86_AtomicIncrement(PRInt32 *val); +#define _MD_ATOMIC_INCREMENT _PR_x86_AtomicIncrement +extern PRInt32 _PR_x86_AtomicDecrement(PRInt32 *val); +#define _MD_ATOMIC_DECREMENT _PR_x86_AtomicDecrement +extern PRInt32 _PR_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val); +#define _MD_ATOMIC_ADD _PR_x86_AtomicAdd +extern PRInt32 _PR_x86_AtomicSet(PRInt32 *val, PRInt32 newval); +#define _MD_ATOMIC_SET _PR_x86_AtomicSet +#endif + +#if defined(__ia64__) +#define _PR_HAVE_ATOMIC_OPS +#define _MD_INIT_ATOMIC() +extern PRInt32 _PR_ia64_AtomicIncrement(PRInt32 *val); +#define _MD_ATOMIC_INCREMENT _PR_ia64_AtomicIncrement +extern PRInt32 _PR_ia64_AtomicDecrement(PRInt32 *val); +#define _MD_ATOMIC_DECREMENT _PR_ia64_AtomicDecrement +extern PRInt32 _PR_ia64_AtomicAdd(PRInt32 *ptr, PRInt32 val); +#define _MD_ATOMIC_ADD _PR_ia64_AtomicAdd +extern PRInt32 _PR_ia64_AtomicSet(PRInt32 *val, PRInt32 newval); +#define _MD_ATOMIC_SET _PR_ia64_AtomicSet +#endif + +#if defined(__x86_64__) +#define _PR_HAVE_ATOMIC_OPS +#define _MD_INIT_ATOMIC() +extern PRInt32 _PR_x86_64_AtomicIncrement(PRInt32 *val); +#define _MD_ATOMIC_INCREMENT _PR_x86_64_AtomicIncrement +extern PRInt32 _PR_x86_64_AtomicDecrement(PRInt32 *val); +#define _MD_ATOMIC_DECREMENT _PR_x86_64_AtomicDecrement +extern PRInt32 _PR_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val); +#define _MD_ATOMIC_ADD _PR_x86_64_AtomicAdd +extern PRInt32 _PR_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval); +#define _MD_ATOMIC_SET _PR_x86_64_AtomicSet +#endif + +#if defined(__loongarch__) +#if defined(__GNUC__) +/* Use GCC built-in functions */ +#define _PR_HAVE_ATOMIC_OPS +#define _MD_INIT_ATOMIC() +#define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1) +#define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1) +#define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i) +#define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv) +#endif +#endif + +#if defined(__or1k__) +#if defined(__GNUC__) +/* Use GCC built-in functions */ +#define _PR_HAVE_ATOMIC_OPS +#define _MD_INIT_ATOMIC() +#define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1) +#define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1) +#define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i) +#define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv) +#endif +#endif + +#if defined(__powerpc__) && !defined(__powerpc64__) +#define _PR_HAVE_ATOMIC_OPS +#define _MD_INIT_ATOMIC() +extern PRInt32 _PR_ppc_AtomicIncrement(PRInt32 *val); +#define _MD_ATOMIC_INCREMENT _PR_ppc_AtomicIncrement +extern PRInt32 _PR_ppc_AtomicDecrement(PRInt32 *val); +#define _MD_ATOMIC_DECREMENT _PR_ppc_AtomicDecrement +extern PRInt32 _PR_ppc_AtomicAdd(PRInt32 *ptr, PRInt32 val); +#define _MD_ATOMIC_ADD _PR_ppc_AtomicAdd +extern PRInt32 _PR_ppc_AtomicSet(PRInt32 *val, PRInt32 newval); +#define _MD_ATOMIC_SET _PR_ppc_AtomicSet +#endif + +#if defined(__powerpc64__) +#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) +/* Use GCC built-in functions */ +#define _PR_HAVE_ATOMIC_OPS +#define _MD_INIT_ATOMIC() +#define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1) +#define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1) +#define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i) +#define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv) +#endif +#endif + +#if defined(__mips__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) +/* Use GCC built-in functions */ +#define _PR_HAVE_ATOMIC_OPS +#define _MD_INIT_ATOMIC() +#define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1) +#define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1) +#define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i) +#define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv) +#endif + +#if defined(__alpha) +#define _PR_HAVE_ATOMIC_OPS +#define _MD_INIT_ATOMIC() +#define _MD_ATOMIC_ADD(ptr, i) ({ \ + PRInt32 __atomic_tmp, __atomic_ret; \ + __asm__ __volatile__( \ + "1: ldl_l %[ret], %[val] \n" \ + " addl %[ret], %[inc], %[tmp] \n" \ + " addl %[ret], %[inc], %[ret] \n" \ + " stl_c %[tmp], %[val] \n" \ + " beq %[tmp], 2f \n" \ + ".subsection 2 \n" \ + "2: br 1b \n" \ + ".previous" \ + : [ret] "=&r" (__atomic_ret), \ + [tmp] "=&r" (__atomic_tmp), \ + [val] "=m" (*ptr) \ + : [inc] "Ir" (i), "m" (*ptr)); \ + __atomic_ret; \ +}) +#define _MD_ATOMIC_INCREMENT(ptr) _MD_ATOMIC_ADD(ptr, 1) +#define _MD_ATOMIC_DECREMENT(ptr) ({ \ + PRInt32 __atomic_tmp, __atomic_ret; \ + __asm__ __volatile__( \ + "1: ldl_l %[ret], %[val] \n" \ + " subl %[ret], 1, %[tmp] \n" \ + " subl %[ret], 1, %[ret] \n" \ + " stl_c %[tmp], %[val] \n" \ + " beq %[tmp], 2f \n" \ + ".subsection 2 \n" \ + "2: br 1b \n" \ + ".previous" \ + : [ret] "=&r" (__atomic_ret), \ + [tmp] "=&r" (__atomic_tmp), \ + [val] "=m" (*ptr) \ + : "m" (*ptr)); \ + __atomic_ret; \ +}) +#define _MD_ATOMIC_SET(ptr, n) ({ \ + PRInt32 __atomic_tmp, __atomic_ret; \ + __asm__ __volatile__( \ + "1: ldl_l %[ret], %[val] \n" \ + " mov %[newval], %[tmp] \n" \ + " stl_c %[tmp], %[val] \n" \ + " beq %[tmp], 2f \n" \ + ".subsection 2 \n" \ + "2: br 1b \n" \ + ".previous" \ + : [ret] "=&r" (__atomic_ret), \ + [tmp] "=&r"(__atomic_tmp), \ + [val] "=m" (*ptr) \ + : [newval] "Ir" (n), "m" (*ptr)); \ + __atomic_ret; \ +}) +#endif + +#if defined(__arm__) || defined(__aarch64__) +#if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) +/* Use GCC built-in functions */ +#define _PR_HAVE_ATOMIC_OPS +#define _MD_INIT_ATOMIC() + +#define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1) +#define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1) +#define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv) +#define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i) + +#elif defined(_PR_ARM_KUSER) +#define _PR_HAVE_ATOMIC_OPS +#define _MD_INIT_ATOMIC() + +/* + * The kernel provides this helper function at a fixed address with a fixed + * ABI signature, directly callable from user space. + * + * Definition: + * Atomically store newval in *ptr if *ptr is equal to oldval. + * Return zero if *ptr was changed or non-zero if no exchange happened. + */ +typedef int (__kernel_cmpxchg_t)(int oldval, int newval, volatile int *ptr); +#define __kernel_cmpxchg (*(__kernel_cmpxchg_t *)0xffff0fc0) + +#define _MD_ATOMIC_INCREMENT(ptr) _MD_ATOMIC_ADD(ptr, 1) +#define _MD_ATOMIC_DECREMENT(ptr) _MD_ATOMIC_ADD(ptr, -1) + +static inline PRInt32 _MD_ATOMIC_ADD(PRInt32 *ptr, PRInt32 n) +{ + PRInt32 ov, nv; + volatile PRInt32 *vp = ptr; + + do { + ov = *vp; + nv = ov + n; + } while (__kernel_cmpxchg(ov, nv, vp)); + + return nv; +} + +static inline PRInt32 _MD_ATOMIC_SET(PRInt32 *ptr, PRInt32 nv) +{ + PRInt32 ov; + volatile PRInt32 *vp = ptr; + + do { + ov = *vp; + } while (__kernel_cmpxchg(ov, nv, vp)); + + return ov; +} +#endif +#endif /* __arm__ */ + +#define USE_SETJMP +#if (defined(__GLIBC__) && __GLIBC__ >= 2) || defined(ANDROID) +#define _PR_POLL_AVAILABLE +#endif +#undef _PR_USE_POLL +#define _PR_STAT_HAS_ONLY_ST_ATIME +#if defined(__alpha) || defined(__ia64__) +#define _PR_HAVE_LARGE_OFF_T +#elif (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) \ + || defined(ANDROID) +#define _PR_HAVE_OFF64_T +#else +#define _PR_NO_LARGE_FILES +#endif +#if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) \ + || defined(ANDROID) +#define _PR_INET6 +#define _PR_HAVE_INET_NTOP +#define _PR_HAVE_GETHOSTBYNAME2 +#define _PR_HAVE_GETADDRINFO +#define _PR_INET6_PROBE +#endif +#ifndef ANDROID +#define _PR_HAVE_SYSV_SEMAPHORES +#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY +#endif +/* Android has gethostbyname_r but not gethostbyaddr_r or gethostbyname2_r. */ +#if (__GLIBC__ >= 2) && defined(_PR_PTHREADS) +#define _PR_HAVE_GETHOST_R +#define _PR_HAVE_GETHOST_R_INT +#endif + +#ifdef _PR_PTHREADS + +extern void _MD_CleanupBeforeExit(void); +#define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit + +#else /* ! _PR_PTHREADS */ + +#include <setjmp.h> + +#define PR_CONTEXT_TYPE sigjmp_buf + +#define CONTEXT(_th) ((_th)->md.context) + +#ifdef __powerpc__ +/* + * PowerPC based MkLinux + * + * On the PowerPC, the new style jmp_buf isn't used until glibc + * 2.1. + */ +#if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_GPR1] +#else +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__misc[0] +#endif /* glibc 2.1 or later */ +#define _MD_SET_FP(_t, val) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) ((void *) 0) +/* aix = 64, macos = 70 */ +#define PR_NUM_GCREGS 64 + +#elif defined(__alpha) +/* Alpha based Linux */ + +#if defined(__GLIBC__) && __GLIBC__ >= 2 +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP] +#define _MD_SET_FP(_t, val) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) ((void *) 0) +#define _MD_SP_TYPE long int +#else +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp +#define _MD_SET_FP(_t, val) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) ((void *) 0) +#define _MD_SP_TYPE __ptr_t +#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ + +/* XXX not sure if this is correct, or maybe it should be 17? */ +#define PR_NUM_GCREGS 9 + +#elif defined(__ia64__) + +#define _MD_GET_SP(_t) ((long *)((_t)->md.context[0].__jmpbuf)[0]) +#define _MD_SET_FP(_t, val) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) ((void *) 0) +#define _MD_SP_TYPE long int + +#define PR_NUM_GCREGS _JBLEN + +#elif defined(__mc68000__) +/* m68k based Linux */ + +/* + * On the m68k, glibc still uses the old style sigjmp_buf, even + * in glibc 2.0.7. + */ +#if defined(__GLIBC__) && __GLIBC__ >= 2 +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp +#define _MD_SET_FP(_t, val) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) ((void *) 0) +#define _MD_SP_TYPE int +#else +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp +#define _MD_SET_FP(_t, val) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) ((void *) 0) +#define _MD_SP_TYPE __ptr_t +#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ + +/* XXX not sure if this is correct, or maybe it should be 17? */ +#define PR_NUM_GCREGS 9 + +#elif defined(__sparc__) +/* Sparc */ +#if defined(__GLIBC__) && __GLIBC__ >= 2 +/* + * You need glibc2-2.0.7-25 or later. The libraries that came with + * Red Hat 5.1 are not new enough, but they are in 5.2. + */ +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP] +#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_FP] = val) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_FP]) +#define _MD_SP_TYPE int +#else +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__fp +#define _MD_SET_FP(_t, val) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) ((void *) 0) +#define _MD_SP_TYPE __ptr_t +#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ + +#elif defined(__i386__) +/* Intel based Linux */ +#if defined(__GLIBC__) && __GLIBC__ >= 2 +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP] +#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_BP] = val) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_BP]) +#define _MD_SP_TYPE int +#else +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp +#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__bp = val) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) &((_t)->md.context[0].__jmpbuf[0].__bp) +#define _MD_SP_TYPE __ptr_t +#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ +#define PR_NUM_GCREGS 6 + +#elif defined(__mips__) +/* Linux/MIPS */ +#if defined(__GLIBC__) && __GLIBC__ >= 2 +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp +#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__fp = (val)) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[0].__fp) +#define _MD_SP_TYPE __ptr_t +#else +#error "Linux/MIPS pre-glibc2 not supported yet" +#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ + +#elif defined(__arm__) +/* ARM/Linux */ +#if defined(__GLIBC__) && __GLIBC__ >= 2 +#ifdef __ARM_EABI__ +/* EABI */ +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[8] +#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[7] = (val)) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[7]) +#define _MD_SP_TYPE __ptr_t +#else /* __ARM_EABI__ */ +/* old ABI */ +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[20] +#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[19] = (val)) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[19]) +#define _MD_SP_TYPE __ptr_t +#endif /* __ARM_EABI__ */ +#else +#error "ARM/Linux pre-glibc2 not supported yet" +#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ + +#elif defined(__sh__) +/* SH/Linux */ +#if defined(__GLIBC__) && __GLIBC__ >= 2 +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[7] +#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[6] = (val)) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[6]) +#define _MD_SP_TYPE __ptr_t +#else +#error "SH/Linux pre-glibc2 not supported yet" +#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ + +#elif defined(__m32r__) +/* Linux/M32R */ +#if defined(__GLIBC__) && __GLIBC__ >= 2 +#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__regs[JB_SP] +#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__regs[JB_FP] = (val)) +#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) +#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[0].__regs[JB_FP]) +#define _MD_SP_TYPE __ptr_t +#else +#error "Linux/M32R pre-glibc2 not supported yet" +#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ + +#else + +#error "Unknown CPU architecture" + +#endif /*__powerpc__*/ + +/* +** Initialize a thread context to run "_main()" when started +*/ +#ifdef __powerpc__ + +#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ +{ \ + *status = PR_TRUE; \ + if (sigsetjmp(CONTEXT(_thread), 1)) { \ + _main(); \ + } \ + _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 128); \ + _thread->md.sp = _MD_GET_SP_PTR(_thread); \ + _thread->md.fp = _MD_GET_FP_PTR(_thread); \ + _MD_SET_FP(_thread, 0); \ +} + +#elif defined(__mips__) + +#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ +{ \ + *status = PR_TRUE; \ + (void) sigsetjmp(CONTEXT(_thread), 1); \ + _thread->md.context[0].__jmpbuf[0].__pc = (__ptr_t) _main; \ + _MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \ + _thread->md.sp = _MD_GET_SP_PTR(_thread); \ + _thread->md.fp = _MD_GET_FP_PTR(_thread); \ + _MD_SET_FP(_thread, 0); \ +} + +#else + +#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ +{ \ + *status = PR_TRUE; \ + if (sigsetjmp(CONTEXT(_thread), 1)) { \ + _main(); \ + } \ + _MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \ + _thread->md.sp = _MD_GET_SP_PTR(_thread); \ + _thread->md.fp = _MD_GET_FP_PTR(_thread); \ + _MD_SET_FP(_thread, 0); \ +} + +#endif /*__powerpc__*/ + +#define _MD_SWITCH_CONTEXT(_thread) \ + if (!sigsetjmp(CONTEXT(_thread), 1)) { \ + (_thread)->md.errcode = errno; \ + _PR_Schedule(); \ + } + +/* +** Restore a thread context, saved by _MD_SWITCH_CONTEXT +*/ +#define _MD_RESTORE_CONTEXT(_thread) \ +{ \ + errno = (_thread)->md.errcode; \ + _MD_SET_CURRENT_THREAD(_thread); \ + siglongjmp(CONTEXT(_thread), 1); \ +} + +/* Machine-dependent (MD) data structures */ + +struct _MDThread { + PR_CONTEXT_TYPE context; + void *sp; + void *fp; + int id; + int errcode; +}; + +struct _MDThreadStack { + PRInt8 notused; +}; + +struct _MDLock { + PRInt8 notused; +}; + +struct _MDSemaphore { + PRInt8 notused; +}; + +struct _MDCVar { + PRInt8 notused; +}; + +struct _MDSegment { + PRInt8 notused; +}; + +/* + * md-specific cpu structure field + */ +#include <sys/time.h> /* for FD_SETSIZE */ +#define _PR_MD_MAX_OSFD FD_SETSIZE + +struct _MDCPU_Unix { + PRCList ioQ; + PRUint32 ioq_timeout; + PRInt32 ioq_max_osfd; + PRInt32 ioq_osfd_cnt; +#ifndef _PR_USE_POLL + fd_set fd_read_set, fd_write_set, fd_exception_set; + PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD], + fd_exception_cnt[_PR_MD_MAX_OSFD]; +#else + struct pollfd *ioq_pollfds; + int ioq_pollfds_size; +#endif /* _PR_USE_POLL */ +}; + +#define _PR_IOQ(_cpu) ((_cpu)->md.md_unix.ioQ) +#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu)) +#define _PR_FD_READ_SET(_cpu) ((_cpu)->md.md_unix.fd_read_set) +#define _PR_FD_READ_CNT(_cpu) ((_cpu)->md.md_unix.fd_read_cnt) +#define _PR_FD_WRITE_SET(_cpu) ((_cpu)->md.md_unix.fd_write_set) +#define _PR_FD_WRITE_CNT(_cpu) ((_cpu)->md.md_unix.fd_write_cnt) +#define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set) +#define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt) +#define _PR_IOQ_TIMEOUT(_cpu) ((_cpu)->md.md_unix.ioq_timeout) +#define _PR_IOQ_MAX_OSFD(_cpu) ((_cpu)->md.md_unix.ioq_max_osfd) +#define _PR_IOQ_OSFD_CNT(_cpu) ((_cpu)->md.md_unix.ioq_osfd_cnt) +#define _PR_IOQ_POLLFDS(_cpu) ((_cpu)->md.md_unix.ioq_pollfds) +#define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size) + +#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu) 32 + +struct _MDCPU { + struct _MDCPU_Unix md_unix; +}; + +#define _MD_INIT_LOCKS() +#define _MD_NEW_LOCK(lock) PR_SUCCESS +#define _MD_FREE_LOCK(lock) +#define _MD_LOCK(lock) +#define _MD_UNLOCK(lock) +#define _MD_INIT_IO() +#define _MD_IOQ_LOCK() +#define _MD_IOQ_UNLOCK() + +extern PRStatus _MD_InitializeThread(PRThread *thread); + +#define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu) +#define _MD_INIT_THREAD _MD_InitializeThread +#define _MD_EXIT_THREAD(thread) +#define _MD_SUSPEND_THREAD(thread) _MD_suspend_thread +#define _MD_RESUME_THREAD(thread) _MD_resume_thread +#define _MD_CLEAN_THREAD(_thread) + +extern PRStatus _MD_CREATE_THREAD( + PRThread *thread, + void (*start) (void *), + PRThreadPriority priority, + PRThreadScope scope, + PRThreadState state, + PRUint32 stackSize); +extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri); +extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout); +extern PRStatus _MD_WAKEUP_WAITER(PRThread *); +extern void _MD_YIELD(void); + +#endif /* ! _PR_PTHREADS */ + +extern void _MD_EarlyInit(void); + +#define _MD_EARLY_INIT _MD_EarlyInit +#define _MD_FINAL_INIT _PR_UnixInit +#define _PR_HAVE_CLOCK_MONOTONIC + +/* + * We wrapped the select() call. _MD_SELECT refers to the built-in, + * unwrapped version. + */ +#define _MD_SELECT __select + +#ifdef _PR_POLL_AVAILABLE +#include <sys/poll.h> +extern int __syscall_poll(struct pollfd *ufds, unsigned long int nfds, + int timeout); +#define _MD_POLL __syscall_poll +#endif + +/* For writev() */ +#include <sys/uio.h> + +extern void _MD_linux_map_sendfile_error(int err); + +#endif /* nspr_linux_defs_h___ */ |