diff options
Diffstat (limited to 'gdb/loongarch-linux-nat.c')
| -rw-r--r-- | gdb/loongarch-linux-nat.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/gdb/loongarch-linux-nat.c b/gdb/loongarch-linux-nat.c index fe65b5d..85d0a96 100644 --- a/gdb/loongarch-linux-nat.c +++ b/gdb/loongarch-linux-nat.c @@ -146,6 +146,125 @@ store_fpregs_to_thread (struct regcache *regcache, int regnum, pid_t tid) } } +/* Fill GDB's register array with the Loongson SIMD Extension + register values from the current thread. */ + +static void +fetch_lsxregs_from_thread (struct regcache *regcache, int regnum, pid_t tid) +{ + elf_lsxregset_t regset; + + if ((regnum == -1) + || (regnum >= LOONGARCH_FIRST_LSX_REGNUM && regnum < LOONGARCH_FIRST_LASX_REGNUM)) + { + struct iovec iovec = { .iov_base = ®set, .iov_len = sizeof (regset) }; + + if (ptrace (PTRACE_GETREGSET, tid, NT_LARCH_LSX, (long) &iovec) < 0) + { + /* If kernel dose not support lsx, just return. */ + if (errno == EINVAL) + return; + + perror_with_name (_("Couldn't get NT_LARCH_LSX registers")); + } + else + loongarch_lsxregset.supply_regset (nullptr, regcache, -1, + ®set, sizeof (regset)); + } +} + +/* Store to the current thread the valid Loongson SIMD Extension + register values in the GDB's register array. */ + +static void +store_lsxregs_to_thread (struct regcache *regcache, int regnum, pid_t tid) +{ + elf_lsxregset_t regset; + + if ((regnum == -1) + || (regnum >= LOONGARCH_FIRST_LSX_REGNUM && regnum < LOONGARCH_FIRST_LASX_REGNUM)) + { + struct iovec iovec = { .iov_base = ®set, .iov_len = sizeof (regset) }; + + if (ptrace (PTRACE_GETREGSET, tid, NT_LARCH_LSX, (long) &iovec) < 0) + { + /* If kernel dose not support lsx, just return. */ + if (errno == EINVAL) + return; + + perror_with_name (_("Couldn't get NT_LARCH_LSX registers")); + } + else + { + loongarch_lsxregset.collect_regset (nullptr, regcache, regnum, + ®set, sizeof (regset)); + if (ptrace (PTRACE_SETREGSET, tid, NT_LARCH_LSX, (long) &iovec) < 0) + perror_with_name (_("Couldn't set NT_LARCH_LSX registers")); + } + } +} + +/* Fill GDB's register array with the Loongson Advanced SIMD Extension + register values from the current thread. */ + +static void +fetch_lasxregs_from_thread (struct regcache *regcache, int regnum, pid_t tid) +{ + elf_lasxregset_t regset; + + if ((regnum == -1) + || (regnum >= LOONGARCH_FIRST_LASX_REGNUM + && regnum < LOONGARCH_FIRST_LASX_REGNUM + LOONGARCH_LINUX_NUM_LASXREGSET)) + { + struct iovec iovec = { .iov_base = ®set, .iov_len = sizeof (regset) }; + + if (ptrace (PTRACE_GETREGSET, tid, NT_LARCH_LASX, (long) &iovec) < 0) + { + /* If kernel dose not support lasx, just return. */ + if (errno == EINVAL) + return; + + perror_with_name (_("Couldn't get NT_LARCH_LSX registers")); + } + else + loongarch_lasxregset.supply_regset (nullptr, regcache, -1, + ®set, sizeof (regset)); + } +} + +/* Store to the current thread the valid Loongson Advanced SIMD Extension + register values in the GDB's register array. */ + +static void +store_lasxregs_to_thread (struct regcache *regcache, int regnum, pid_t tid) +{ + elf_lasxregset_t regset; + + if ((regnum == -1) + || (regnum >= LOONGARCH_FIRST_LASX_REGNUM + && regnum < LOONGARCH_FIRST_LASX_REGNUM + LOONGARCH_LINUX_NUM_LASXREGSET)) + { + struct iovec iovec = { .iov_base = ®set, .iov_len = sizeof (regset) }; + + if (ptrace (PTRACE_GETREGSET, tid, NT_LARCH_LASX, (long) &iovec) < 0) + { + /* If kernel dose not support lasx, just return. */ + if (errno == EINVAL) + return; + + perror_with_name (_("Couldn't get NT_LARCH_LSX registers")); + } + else + { + loongarch_lasxregset.collect_regset (nullptr, regcache, regnum, + ®set, sizeof (regset)); + if (ptrace (PTRACE_SETREGSET, tid, NT_LARCH_LASX, (long) &iovec) < 0) + perror_with_name (_("Couldn't set NT_LARCH_LASX registers")); + } + } +} + + /* Implement the "fetch_registers" target_ops method. */ void @@ -156,6 +275,8 @@ loongarch_linux_nat_target::fetch_registers (struct regcache *regcache, fetch_gregs_from_thread(regcache, regnum, tid); fetch_fpregs_from_thread(regcache, regnum, tid); + fetch_lsxregs_from_thread(regcache, regnum, tid); + fetch_lasxregs_from_thread(regcache, regnum, tid); } /* Implement the "store_registers" target_ops method. */ @@ -168,6 +289,8 @@ loongarch_linux_nat_target::store_registers (struct regcache *regcache, store_gregs_to_thread (regcache, regnum, tid); store_fpregs_to_thread(regcache, regnum, tid); + store_lsxregs_to_thread(regcache, regnum, tid); + store_lasxregs_to_thread(regcache, regnum, tid); } /* Return the address in the core dump or inferior of register REGNO. */ |