diff options
Diffstat (limited to 'gdb/riscv-linux-tdep.c')
| -rw-r--r-- | gdb/riscv-linux-tdep.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/gdb/riscv-linux-tdep.c b/gdb/riscv-linux-tdep.c index e5d77e7..0a94611 100644 --- a/gdb/riscv-linux-tdep.c +++ b/gdb/riscv-linux-tdep.c @@ -502,6 +502,28 @@ riscv_linux_get_tls_dtp_offset (struct gdbarch *gdbarch, ptid_t ptid, return 0; } +/* Function to extract syscall number. */ + +static LONGEST +riscv_linux_get_syscall_number (struct gdbarch *gdbarch, thread_info *thread) +{ + struct regcache *regcache = get_thread_regcache (thread); + LONGEST ret; + + /* Getting the system call number from the register. + When dealing with riscv architecture, this information + is stored in $a7 register. */ + if (regcache->cooked_read (RISCV_A7_REGNUM, &ret) + != register_status::REG_VALID) + { + warning (_ ("Can not read a7 register")); + return -1; + } + + /* The result. */ + return ret; +} + /* Initialize RISC-V Linux ABI info. */ static void @@ -511,7 +533,7 @@ riscv_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) linux_init_abi (info, gdbarch, 0); - set_gdbarch_software_single_step (gdbarch, riscv_software_single_step); + set_gdbarch_get_next_pcs (gdbarch, riscv_software_single_step); set_solib_svr4_ops (gdbarch, (riscv_isa_xlen (gdbarch) == 4 ? make_linux_ilp32_svr4_solib_ops @@ -540,6 +562,10 @@ riscv_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) tdep->riscv_syscall_record = riscv_linux_syscall_record; riscv64_linux_record_tdep_init (gdbarch, riscv_linux_record_tdep); + + /* Functions for 'catch syscall'. */ + set_gdbarch_xml_syscall_file (gdbarch, "syscalls/riscv-linux.xml"); + set_gdbarch_get_syscall_number (gdbarch, riscv_linux_get_syscall_number); } /* Initialize RISC-V Linux target support. */ |