Changeset View
Changeset View
Standalone View
Standalone View
devel/gdb/files/commit-b0f87ed032
- This file was added.
| Property | Old Value | New Value |
|---|---|---|
| fbsd:nokeywords | null | yes \ No newline at end of property |
| svn:eol-style | null | native \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| commit b0f87ed032bb68a9965de81cbf9fd676a83b9174 | |||||
| Author: John Baldwin <jhb@FreeBSD.org> | |||||
| Date: Tue Mar 12 13:39:02 2019 -0700 | |||||
| Support TLS variables on FreeBSD/riscv. | |||||
| Derive the pointer to the DTV array from the tp register. | |||||
| gdb/ChangeLog: | |||||
| * riscv-fbsd-tdep.c (riscv_fbsd_get_thread_local_address): New. | |||||
| (riscv_fbsd_init_abi): Install gdbarch | |||||
| "fetch_tls_load_module_address" and "get_thread_local_address" | |||||
| methods. | |||||
| diff --git gdb/riscv-fbsd-tdep.c gdb/riscv-fbsd-tdep.c | |||||
| index 97ad28f59a..3125a2285e 100644 | |||||
| --- gdb/riscv-fbsd-tdep.c | |||||
| +++ gdb/riscv-fbsd-tdep.c | |||||
| @@ -174,6 +174,28 @@ static const struct tramp_frame riscv_fbsd_sigframe = | |||||
| riscv_fbsd_sigframe_init | |||||
| }; | |||||
| +/* Implement the "get_thread_local_address" gdbarch method. */ | |||||
| + | |||||
| +static CORE_ADDR | |||||
| +riscv_fbsd_get_thread_local_address (struct gdbarch *gdbarch, ptid_t ptid, | |||||
| + CORE_ADDR lm_addr, CORE_ADDR offset) | |||||
| +{ | |||||
| + struct regcache *regcache; | |||||
| + | |||||
| + regcache = get_thread_arch_regcache (ptid, gdbarch); | |||||
| + | |||||
| + target_fetch_registers (regcache, RISCV_TP_REGNUM); | |||||
| + | |||||
| + ULONGEST tp; | |||||
| + if (regcache->cooked_read (RISCV_TP_REGNUM, &tp) != REG_VALID) | |||||
| + error (_("Unable to fetch %%tp")); | |||||
| + | |||||
| + /* %tp points to the end of the TCB which contains two pointers. | |||||
| + The first pointer in the TCB points to the DTV array. */ | |||||
| + CORE_ADDR dtv_addr = tp - (gdbarch_ptr_bit (gdbarch) / 8) * 2; | |||||
| + return fbsd_get_thread_local_address (gdbarch, dtv_addr, lm_addr, offset); | |||||
| +} | |||||
| + | |||||
| /* Implement the 'init_osabi' method of struct gdb_osabi_handler. */ | |||||
| static void | |||||
| @@ -193,6 +215,11 @@ riscv_fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |||||
| set_gdbarch_iterate_over_regset_sections | |||||
| (gdbarch, riscv_fbsd_iterate_over_regset_sections); | |||||
| + | |||||
| + set_gdbarch_fetch_tls_load_module_address (gdbarch, | |||||
| + svr4_fetch_objfile_link_map); | |||||
| + set_gdbarch_get_thread_local_address (gdbarch, | |||||
| + riscv_fbsd_get_thread_local_address); | |||||
| } | |||||
| void | |||||