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-rw-r--r--sys/contrib/ia64/libuwx/src/uwx_self.c442
1 files changed, 442 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..5f47205
--- /dev/null
+++ b/sys/contrib/ia64/libuwx/src/uwx_self.c
@@ -0,0 +1,442 @@
+/*
+Copyright (c) 2003-2006 Hewlett-Packard Development Company, L.P.
+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.
+*/
+
+#include <stdlib.h>
+#include <string.h>
+#include <crt0.h>
+#include <dlfcn.h>
+#include <sys/uc_access.h>
+
+#include "uwx_env.h"
+#include "uwx_context.h"
+#include "uwx_trace.h"
+#include "uwx_self.h"
+#include "uwx_self_info.h"
+
+#define UWX_ABI_HPUX_SIGCONTEXT 0x0101 /* abi = HP-UX, context = 1 */
+
+void uwx_free_load_module_cache(struct uwx_self_info *info);
+
+int uwx_self_init_info_block(struct uwx_env *env, struct uwx_self_info *info)
+{
+ info->env = env;
+ 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->on_heap = 0;
+ info->trace = env->trace;
+ info->load_module_cache = NULL;
+
+ return UWX_OK;
+}
+
+struct uwx_self_info *uwx_self_init_info(struct uwx_env *env)
+{
+ struct uwx_self_info *info;
+
+ info = (struct uwx_self_info *)
+ (*env->allocate_cb)(sizeof(struct uwx_self_info));
+ if (info == 0)
+ return 0;
+
+ uwx_self_init_info_block(env, info);
+ info->on_heap = 1;
+ return info;
+}
+
+int uwx_self_free_info(struct uwx_self_info *info)
+{
+ int i;
+
+ if (info->load_module_cache != NULL)
+ uwx_free_load_module_cache(info);
+ if (info->on_heap)
+ (*info->env->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;
+ int adj;
+
+ info->ucontext = ucontext;
+ status = __uc_get_reason(ucontext, &reason);
+ if (status != 0)
+ return UWX_ERR_UCACCESS;
+ status = __uc_get_ip(ucontext, &ip);
+ if (status != 0)
+ return UWX_ERR_UCACCESS;
+ status = __uc_get_grs(ucontext, 12, 1, &sp, &nat);
+ if (status != 0)
+ return UWX_ERR_UCACCESS;
+ status = __uc_get_cfm(ucontext, &cfm);
+ if (status != 0)
+ return UWX_ERR_UCACCESS;
+#ifdef NEW_UC_GET_AR
+ status = __uc_get_ar_bsp(ucontext, &bsp);
+ if (status != 0)
+ return UWX_ERR_UCACCESS;
+ status = __uc_get_ar_bspstore(ucontext, &info->bspstore);
+ if (status != 0)
+ return UWX_ERR_UCACCESS;
+ status = __uc_get_ar_ec(ucontext, &ec);
+ if (status != 0)
+ return UWX_ERR_UCACCESS;
+#else
+ status = __uc_get_ar(ucontext, 17, &bsp);
+ if (status != 0)
+ return UWX_ERR_UCACCESS;
+ status = __uc_get_ar(ucontext, 18, &info->bspstore);
+ if (status != 0)
+ return UWX_ERR_UCACCESS;
+ status = __uc_get_ar(ucontext, 66, &ec);
+ if (status != 0)
+ return UWX_ERR_UCACCESS;
+#endif
+ /* The returned bsp needs to be adjusted. */
+ /* For interrupt frames, where bsp was advanced by a cover */
+ /* instruction, subtract sof (size of frame). For non-interrupt */
+ /* frames, where bsp was advanced by br.call, subtract sol */
+ /* (size of locals). */
+ if (reason != 0)
+ adj = (unsigned int)cfm & 0x7f; /* interrupt frame */
+ else
+ adj = ((unsigned int)cfm >> 7) & 0x7f; /* non-interrupt frame */
+ bsp = uwx_add_to_bsp(bsp, -adj);
+ cfm |= ec << 52;
+ 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 != UWX_OK)
+ return status;
+ return uwx_self_init_from_sigcontext(env, info,
+ (ucontext_t *)(intptr_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;
+
+ status = -1;
+
+ dp = (uint64_t *) loc;
+
+ switch (request) {
+ case UWX_COPYIN_UINFO:
+ case UWX_COPYIN_MSTACK:
+ if (len == 4) {
+ wp = (unsigned long *) loc;
+ *wp = *(unsigned long *)(intptr_t)rem;
+ TRACE_SELF_COPYIN4(rem, len, wp)
+ status = 0;
+ }
+ else if (len == 8) {
+ *dp = *(uint64_t *)(intptr_t)rem;
+ TRACE_SELF_COPYIN8(rem, len, dp)
+ status = 0;
+ }
+ break;
+ case UWX_COPYIN_RSTACK:
+ if (len == 8) {
+ if (info->ucontext == 0 && rem == (info->bspstore | 0x1f8)) {
+ *dp = info->env->context.special[UWX_REG_AR_RNAT];
+ status = 0;
+ }
+ else if (info->ucontext == 0 || rem < info->bspstore) {
+ *dp = *(uint64_t *)(intptr_t)rem;
+ TRACE_SELF_COPYIN8(rem, len, dp)
+ status = 0;
+ }
+ else {
+ status = __uc_get_rsebs(info->ucontext,
+ (uint64_t *)(intptr_t)rem, 1, dp);
+ }
+ }
+ break;
+ case UWX_COPYIN_REG:
+ regid = (int)rem;
+ if (info->ucontext != 0) {
+ if (len == 8) {
+ if (rem == UWX_REG_PREDS)
+ status = __uc_get_prs(info->ucontext, dp);
+ else if (rem == UWX_REG_AR_PFS)
+ status = __uc_get_ar(info->ucontext, 64, dp);
+ else if (rem == UWX_REG_AR_RNAT)
+ status = __uc_get_ar(info->ucontext, 19, dp);
+ else if (rem == UWX_REG_AR_UNAT)
+ status = __uc_get_ar(info->ucontext, 36, dp);
+ else if (rem == UWX_REG_AR_FPSR)
+ status = __uc_get_ar(info->ucontext, 40, dp);
+ else if (rem == UWX_REG_AR_LC)
+ status = __uc_get_ar(info->ucontext, 65, dp);
+ 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);
+ }
+ else if (len == 16) {
+ if (regid >= UWX_REG_FR(2) && regid <= UWX_REG_FR(127)) {
+ status = __uc_get_frs(info->ucontext,
+ regid - UWX_REG_FR(0), 1, (fp_regval_t *)dp);
+ }
+ }
+ }
+ break;
+ }
+ if (status != 0)
+ return 0;
+ return len;
+}
+
+#define MODULE_CACHE_SIZE 4
+
+struct load_module_cache {
+ int clock;
+ char *names[MODULE_CACHE_SIZE];
+ struct load_module_desc descs[MODULE_CACHE_SIZE];
+ struct uwx_symbol_cache *symbol_cache;
+};
+
+void uwx_free_load_module_cache(struct uwx_self_info *info)
+{
+ int i;
+
+ for (i = 0; i < MODULE_CACHE_SIZE; i++) {
+ if (info->load_module_cache->names[i] != NULL)
+ (*info->env->free_cb)((void *)info->load_module_cache->names[i]);
+ }
+
+ if (info->load_module_cache->symbol_cache != NULL)
+ uwx_release_symbol_cache(info->env,
+ info->load_module_cache->symbol_cache);
+
+ (*info->env->free_cb)((void *)info->load_module_cache);
+}
+
+struct load_module_desc *uwx_get_modinfo(
+ struct uwx_self_info *info,
+ uint64_t ip,
+ char **module_name_p)
+{
+ int i;
+ UINT64 handle;
+ struct load_module_cache *cache;
+ struct load_module_desc *desc;
+ char *module_name;
+
+ cache = info->load_module_cache;
+ if (cache == NULL) {
+ cache = (struct load_module_cache *)
+ (*info->env->allocate_cb)(sizeof(struct load_module_cache));
+ if (cache == NULL)
+ return NULL;
+ for (i = 0; i < MODULE_CACHE_SIZE; i++) {
+ desc = &cache->descs[i];
+ desc->text_base = 0;
+ desc->text_size = 0;
+ cache->names[i] = NULL;
+ }
+ cache->clock = 0;
+ cache->symbol_cache = NULL;
+ info->load_module_cache = cache;
+ }
+ for (i = 0; i < MODULE_CACHE_SIZE; i++) {
+ desc = &cache->descs[i];
+ if (ip >= desc->text_base && ip < desc->text_base + desc->text_size)
+ break;
+ }
+ if (i >= MODULE_CACHE_SIZE) {
+ i = cache->clock;
+ cache->clock = (cache->clock + 1) % MODULE_CACHE_SIZE;
+ desc = &cache->descs[i];
+ handle = dlmodinfo(ip, desc, sizeof(*desc), 0, 0, 0);
+ if (handle == 0)
+ return NULL;
+ if (cache->names[i] != NULL)
+ (*info->env->free_cb)(cache->names[i]);
+ cache->names[i] = NULL;
+ }
+ if (module_name_p != NULL) {
+ if (cache->names[i] == NULL) {
+ module_name = dlgetname(desc, sizeof(*desc), 0, 0, 0);
+ if (module_name != NULL) {
+ cache->names[i] = (char *)
+ (*info->env->allocate_cb)(strlen(module_name)+1);
+ if (cache->names[i] != NULL)
+ strcpy(cache->names[i], module_name);
+ }
+ }
+ *module_name_p = cache->names[i];
+ }
+ return desc;
+}
+
+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;
+ char *module_name;
+ char *func_name;
+ uint64_t offset;
+ int i;
+ int status;
+
+ 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++] = UWX_KEY_END;
+ rvec[i++] = 0;
+ *resultp = rvec;
+ return UWX_LKUP_FDESC;
+ }
+ else {
+ desc = uwx_get_modinfo(info, ip, NULL);
+ if (desc == NULL)
+ return UWX_LKUP_ERR;
+ unwind_base = (uint64_t *) (intptr_t) desc->unwind_base;
+ TRACE_SELF_LOOKUP_DESC(desc->text_base,
+ desc->linkage_ptr, 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++] = UWX_KEY_GP;
+ rvec[i++] = desc->linkage_ptr;
+ rvec[i++] = UWX_KEY_END;
+ rvec[i++] = 0;
+ *resultp = rvec;
+ return UWX_LKUP_UTABLE;
+ }
+ }
+ else if (request == UWX_LKUP_FREE) {
+ return 0;
+ }
+ else if (request == UWX_LKUP_MODULE) {
+ desc = uwx_get_modinfo(info, ip, &module_name);
+ if (desc == NULL)
+ return UWX_LKUP_ERR;
+ if (module_name == NULL)
+ return UWX_LKUP_ERR;
+ i = 0;
+ rvec = info->rvec;
+ rvec[i++] = UWX_KEY_MODULE;
+ rvec[i++] = (uint64_t)(intptr_t)module_name;
+ rvec[i++] = UWX_KEY_TBASE;
+ rvec[i++] = desc->text_base;
+ rvec[i++] = UWX_KEY_END;
+ rvec[i++] = 0;
+ *resultp = rvec;
+ return UWX_LKUP_SYMINFO;
+ }
+ else if (request == UWX_LKUP_SYMBOLS) {
+ rvec = *resultp;
+ for (i = 0; rvec[i] != UWX_KEY_END; i += 2) {
+ if (rvec[i] == UWX_KEY_FUNCSTART)
+ ip = rvec[i+1];
+ }
+ desc = uwx_get_modinfo(info, ip, &module_name);
+ if (desc == NULL)
+ return UWX_LKUP_ERR;
+ if (module_name == NULL)
+ return UWX_LKUP_ERR;
+ status = uwx_find_symbol(info->env,
+ &info->load_module_cache->symbol_cache,
+ module_name, ip - desc->text_base,
+ &func_name, &offset);
+ i = 0;
+ rvec = info->rvec;
+ rvec[i++] = UWX_KEY_MODULE;
+ rvec[i++] = (uint64_t)(intptr_t)module_name;
+ rvec[i++] = UWX_KEY_TBASE;
+ rvec[i++] = desc->text_base;
+ if (status == UWX_OK) {
+ rvec[i++] = UWX_KEY_FUNC;
+ rvec[i++] = (uint64_t)(intptr_t)func_name;
+ rvec[i++] = UWX_KEY_FUNCSTART;
+ rvec[i++] = ip - offset;
+ }
+ rvec[i++] = UWX_KEY_END;
+ rvec[i++] = 0;
+ *resultp = rvec;
+ return UWX_LKUP_SYMINFO;
+ }
+ return UWX_LKUP_ERR;
+}
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