diff options
Diffstat (limited to 'sys/contrib/ia64/libuwx/src/uwx_self.c')
-rw-r--r-- | sys/contrib/ia64/libuwx/src/uwx_self.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/sys/contrib/ia64/libuwx/src/uwx_self.c b/sys/contrib/ia64/libuwx/src/uwx_self.c new file mode 100644 index 0000000..d1c080e --- /dev/null +++ b/sys/contrib/ia64/libuwx/src/uwx_self.c @@ -0,0 +1,261 @@ +/* + * Copyright (c) 2002,2003 Hewlett-Packard Company + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#ifndef _KERNEL +#include <stdlib.h> +#include <crt0.h> +#include <dlfcn.h> +#include <sys/uc_access.h> +#endif + +#include "uwx_env.h" +#include "uwx_context.h" +#include "uwx_trace.h" +#include "uwx_self.h" + +#define UWX_ABI_HPUX_SIGCONTEXT 0x0101 /* abi = HP-UX, context = 1 */ + +struct uwx_self_info { + ucontext_t *ucontext; + uint64_t bspstore; + uint64_t rvec[10]; + uint64_t sendsig_start; + uint64_t sendsig_end; + alloc_cb allocate_cb; + free_cb free_cb; + int trace; +}; + +struct uwx_self_info *uwx_self_init_info(struct uwx_env *env) +{ + struct uwx_self_info *info; + + if (env->allocate_cb == 0) + info = (struct uwx_self_info *) + malloc(sizeof(struct uwx_self_info)); + else + info = (struct uwx_self_info *) + (*env->allocate_cb)(sizeof(struct uwx_self_info)); + if (info == 0) + return 0; + + info->ucontext = 0; + info->bspstore = 0; + info->sendsig_start = __load_info->li_sendsig_txt; + info->sendsig_end = __load_info->li_sendsig_txt + + __load_info->li_sendsig_tsz; + info->allocate_cb = env->allocate_cb; + info->free_cb = env->free_cb; + info->trace = env->trace; + return info; +} + +int uwx_self_free_info(struct uwx_self_info *info) +{ + if (info->free_cb == 0) + free((void *)info); + else + (*info->free_cb)((void *)info); + return UWX_OK; +} + +int uwx_self_init_from_sigcontext( + struct uwx_env *env, + struct uwx_self_info *info, + ucontext_t *ucontext) +{ + int status; + uint16_t reason; + uint64_t ip; + uint64_t sp; + uint64_t bsp; + uint64_t cfm; + unsigned int nat; + uint64_t ec; + + info->ucontext = ucontext; + status = __uc_get_reason(ucontext, &reason); + status = __uc_get_ip(ucontext, &ip); + status = __uc_get_grs(ucontext, 12, 1, &sp, &nat); + status = __uc_get_ar(ucontext, 17, &bsp); + status = __uc_get_ar(ucontext, 18, &info->bspstore); + status = __uc_get_ar(ucontext, 66, &ec); + status = __uc_get_cfm(ucontext, &cfm); + cfm |= ec << 52; + if (reason != 0) + bsp = uwx_add_to_bsp(bsp, -((unsigned int)cfm & 0x7f)); + uwx_init_context(env, ip, sp, bsp, cfm); + return UWX_OK; +} + +int uwx_self_do_context_frame( + struct uwx_env *env, + struct uwx_self_info *info) +{ + int abi_context; + int status; + uint64_t ucontext; + + abi_context = uwx_get_abi_context_code(env); + if (abi_context != UWX_ABI_HPUX_SIGCONTEXT) + return UWX_SELF_ERR_BADABICONTEXT; + status = uwx_get_reg(env, UWX_REG_GR(32), (uint64_t *)&ucontext); + if (status != 0) + return status; + return uwx_self_init_from_sigcontext(env, info, (ucontext_t *)ucontext); +} + +int uwx_self_copyin( + int request, + char *loc, + uint64_t rem, + int len, + intptr_t tok) +{ + int status; + int regid; + unsigned int nat; + struct uwx_self_info *info = (struct uwx_self_info *) tok; + unsigned long *wp; + uint64_t *dp; + + dp = (uint64_t *) loc; + + if (request == UWX_COPYIN_UINFO || + request == UWX_COPYIN_MSTACK) { + if (len == 4) { + wp = (unsigned long *) loc; + *wp = *(unsigned long *)rem; + TRACE_SELF_COPYIN4(rem, len, wp) + } + else if (len == 8) { + *dp = *(uint64_t *)rem; + TRACE_SELF_COPYIN4(rem, len, dp) + } + else + return 0; + } + else if (request == UWX_COPYIN_RSTACK && len == 8) { + if (info->ucontext == 0 || rem < info->bspstore) { + *dp = *(uint64_t *)rem; + TRACE_SELF_COPYIN4(rem, len, dp) + } + else { + status = __uc_get_rsebs(info->ucontext, (uint64_t *)rem, 1, dp); + if (status != 0) + return 0; + } + } + else if (request == UWX_COPYIN_REG && len == 8) { + if (info->ucontext == 0) + return 0; + regid = (int)rem; + if (rem < UWX_REG_GR(0)) { + switch (regid) { + case UWX_REG_PFS: + status = __uc_get_ar(info->ucontext, 64, dp); + break; + case UWX_REG_PREDS: + status = __uc_get_prs(info->ucontext, dp); + break; + case UWX_REG_RNAT: + status = __uc_get_ar(info->ucontext, 19, dp); + break; + case UWX_REG_UNAT: + status = __uc_get_ar(info->ucontext, 36, dp); + break; + case UWX_REG_FPSR: + status = __uc_get_ar(info->ucontext, 40, dp); + break; + case UWX_REG_LC: + status = __uc_get_ar(info->ucontext, 65, dp); + break; + default: + return 0; + } + } + else if (regid >= UWX_REG_GR(1) && regid <= UWX_REG_GR(31)) { + status = __uc_get_grs(info->ucontext, + regid - UWX_REG_GR(0), 1, dp, &nat); + } + else if (regid >= UWX_REG_BR(0) && regid <= UWX_REG_BR(7)) { + status = __uc_get_brs(info->ucontext, + regid - UWX_REG_BR(0), 1, dp); + } + if (status != 0) + return 0; + } + return len; +} + + +int uwx_self_lookupip( + int request, + uint64_t ip, + intptr_t tok, + uint64_t **resultp) +{ + struct uwx_self_info *info = (struct uwx_self_info *) tok; + UINT64 handle; + struct load_module_desc desc; + uint64_t *unwind_base; + uint64_t *rvec; + int i; + + if (request == UWX_LKUP_LOOKUP) { + TRACE_SELF_LOOKUP(ip) + if (ip >= info->sendsig_start && ip < info->sendsig_end) { + i = 0; + rvec = info->rvec; + rvec[i++] = UWX_KEY_CONTEXT; + rvec[i++] = UWX_ABI_HPUX_SIGCONTEXT; + rvec[i++] = 0; + rvec[i++] = 0; + *resultp = rvec; + return UWX_LKUP_FDESC; + } + else { + handle = dlmodinfo(ip, &desc, sizeof(desc), 0, 0, 0); + if (handle == 0) + return UWX_LKUP_ERR; + unwind_base = (uint64_t *) desc.unwind_base; + TRACE_SELF_LOOKUP_DESC(desc.text_base, unwind_base) + i = 0; + rvec = info->rvec; + rvec[i++] = UWX_KEY_TBASE; + rvec[i++] = desc.text_base; + rvec[i++] = UWX_KEY_UFLAGS; + rvec[i++] = unwind_base[0]; + rvec[i++] = UWX_KEY_USTART; + rvec[i++] = desc.text_base + unwind_base[1]; + rvec[i++] = UWX_KEY_UEND; + rvec[i++] = desc.text_base + unwind_base[2]; + rvec[i++] = 0; + rvec[i++] = 0; + *resultp = rvec; + return UWX_LKUP_UTABLE; + } + } + else if (request == UWX_LKUP_FREE) { + return 0; + } +} |