| /* libunwind - a platform-independent unwind library |
| Copyright (C) 2003 Hewlett-Packard Co |
| Contributed by David Mosberger-Tang <davidm@hpl.hp.com> |
| Copyright (C) 2010 Konstantin Belousov <kib@freebsd.org> |
| |
| This file is part of libunwind. |
| |
| 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 "_UPT_internal.h" |
| |
| #if HAVE_DECL_PTRACE_POKEUSER || HAVE_TTRACE |
| int |
| _UPT_access_fpreg (unw_addr_space_t as, unw_regnum_t reg, unw_fpreg_t *val, |
| int write, void *arg) |
| { |
| unw_word_t *wp = (unw_word_t *) val; |
| struct UPT_info *ui = arg; |
| pid_t pid = ui->pid; |
| int i; |
| |
| if ((unsigned) reg >= ARRAY_SIZE (_UPT_reg_offset)) |
| return -UNW_EBADREG; |
| |
| errno = 0; |
| if (write) |
| for (i = 0; i < (int) (sizeof (*val) / sizeof (wp[i])); ++i) |
| { |
| #ifdef HAVE_TTRACE |
| # warning No support for ttrace() yet. |
| #else |
| /* ANDROID support update. */ |
| ptrace (PTRACE_POKEUSER, pid, (void*) (_UPT_reg_offset[reg] + i * sizeof(wp[i])), |
| (void*) wp[i]); |
| /* End of ANDROID update. */ |
| #endif |
| if (errno) |
| return -UNW_EBADREG; |
| } |
| else |
| for (i = 0; i < (int) (sizeof (*val) / sizeof (wp[i])); ++i) |
| { |
| #ifdef HAVE_TTRACE |
| # warning No support for ttrace() yet. |
| #else |
| /* ANDROID support update. */ |
| wp[i] = ptrace (PTRACE_PEEKUSER, pid, |
| (void*) (_UPT_reg_offset[reg] + i * sizeof(wp[i])), 0); |
| /* End of ANDROID update. */ |
| #endif |
| if (errno) |
| return -UNW_EBADREG; |
| } |
| return 0; |
| } |
| #elif HAVE_DECL_PT_GETFPREGS |
| int |
| _UPT_access_fpreg (unw_addr_space_t as, unw_regnum_t reg, unw_fpreg_t *val, |
| int write, void *arg) |
| { |
| struct UPT_info *ui = arg; |
| pid_t pid = ui->pid; |
| fpregset_t fpreg; |
| |
| if ((unsigned) reg >= ARRAY_SIZE (_UPT_reg_offset)) |
| return -UNW_EBADREG; |
| |
| if (ptrace(PT_GETFPREGS, pid, (caddr_t)&fpreg, 0) == -1) |
| return -UNW_EBADREG; |
| if (write) { |
| #if defined(__amd64__) |
| memcpy(&fpreg.fpr_xacc[reg], val, sizeof(unw_fpreg_t)); |
| #elif defined(__i386__) |
| memcpy(&fpreg.fpr_acc[reg], val, sizeof(unw_fpreg_t)); |
| #else |
| #error Fix me |
| #endif |
| if (ptrace(PT_SETFPREGS, pid, (caddr_t)&fpreg, 0) == -1) |
| return -UNW_EBADREG; |
| } else |
| #if defined(__amd64__) |
| memcpy(val, &fpreg.fpr_xacc[reg], sizeof(unw_fpreg_t)); |
| #elif defined(__i386__) |
| memcpy(val, &fpreg.fpr_acc[reg], sizeof(unw_fpreg_t)); |
| #else |
| #error Fix me |
| #endif |
| return 0; |
| } |
| /* ANDROID support update. */ |
| #elif defined(__mips__) || defined(__aarch64__) |
| int |
| _UPT_access_fpreg (unw_addr_space_t as, unw_regnum_t reg, unw_fpreg_t *val, |
| int write, void *arg) |
| { |
| # pragma message("_UPT_access_fpreg is not implemented and not currently used.") |
| return -UNW_EBADREG; |
| } |
| /* End of ANDROID update. */ |
| #else |
| #error Fix me |
| #endif |