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devel/gdb/files/commit-ce25aa57a3
- 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 ce25aa57a3cdd028be5868423e6e55506ccd1053 | |||||
| Author: John Baldwin <jhb@FreeBSD.org> | |||||
| Date: Tue Mar 12 13:39:02 2019 -0700 | |||||
| Support TLS variables on FreeBSD/i386. | |||||
| Derive the pointer to the DTV array from the gs_base register. As | |||||
| with FreeBSD/amd64, gs_base is currently only available via the native | |||||
| target. | |||||
| gdb/ChangeLog: | |||||
| * i386-fbsd-tdep.c (i386fbsd_get_thread_local_address): New. | |||||
| (i386fbsd_init_abi): Install gdbarch | |||||
| "fetch_tls_load_module_address" and "get_thread_local_address" | |||||
| methods. | |||||
| diff --git gdb/i386-fbsd-tdep.c gdb/i386-fbsd-tdep.c | |||||
| index ac57e7383d..f274847174 100644 | |||||
| --- gdb/i386-fbsd-tdep.c | |||||
| +++ gdb/i386-fbsd-tdep.c | |||||
| @@ -320,6 +320,30 @@ i386fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch, | |||||
| "XSAVE extended state", cb_data); | |||||
| } | |||||
| +/* Implement the get_thread_local_address gdbarch method. */ | |||||
| + | |||||
| +static CORE_ADDR | |||||
| +i386fbsd_get_thread_local_address (struct gdbarch *gdbarch, ptid_t ptid, | |||||
| + CORE_ADDR lm_addr, CORE_ADDR offset) | |||||
| +{ | |||||
| + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |||||
| + struct regcache *regcache; | |||||
| + | |||||
| + if (tdep->fsbase_regnum == -1) | |||||
| + error (_("Unable to fetch %%gsbase")); | |||||
| + | |||||
| + regcache = get_thread_arch_regcache (ptid, gdbarch); | |||||
| + | |||||
| + target_fetch_registers (regcache, tdep->fsbase_regnum + 1); | |||||
| + | |||||
| + ULONGEST gsbase; | |||||
| + if (regcache->cooked_read (tdep->fsbase_regnum + 1, &gsbase) != REG_VALID) | |||||
| + error (_("Unable to fetch %%gsbase")); | |||||
| + | |||||
| + CORE_ADDR dtv_addr = gsbase + gdbarch_ptr_bit (gdbarch) / 8; | |||||
| + return fbsd_get_thread_local_address (gdbarch, dtv_addr, lm_addr, offset); | |||||
| +} | |||||
| + | |||||
| static void | |||||
| i386fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |||||
| { | |||||
| @@ -418,6 +442,11 @@ i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |||||
| set_gdbarch_core_read_description (gdbarch, | |||||
| i386fbsd_core_read_description); | |||||
| + | |||||
| + set_gdbarch_fetch_tls_load_module_address (gdbarch, | |||||
| + svr4_fetch_objfile_link_map); | |||||
| + set_gdbarch_get_thread_local_address (gdbarch, | |||||
| + i386fbsd_get_thread_local_address); | |||||
| } | |||||
| void | |||||