diff options
| author | Mark Brown <broonie@kernel.org> | 2019-01-29 12:04:54 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-01-29 12:04:54 +0000 |
| commit | d7c26e63cf78fef01d66ae848184c6ee5f4b8bbf (patch) | |
| tree | 3765745a38a7ae1a4a3a056dfc6c736e4c99271d /scripts/gcc-plugins/arm_ssp_per_task_plugin.c | |
| parent | a8233b6c1972e1959cf84a021aeb61ddcd23cc26 (diff) | |
| parent | f17b5f06cb92ef2250513a1e154c47b78df07d40 (diff) | |
Merge tag 'v5.0-rc4' into asoc-5.1
Linux 5.0-rc4
Diffstat (limited to 'scripts/gcc-plugins/arm_ssp_per_task_plugin.c')
| -rw-r--r-- | scripts/gcc-plugins/arm_ssp_per_task_plugin.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/scripts/gcc-plugins/arm_ssp_per_task_plugin.c b/scripts/gcc-plugins/arm_ssp_per_task_plugin.c index de70b8470971..89c47f57d1ce 100644 --- a/scripts/gcc-plugins/arm_ssp_per_task_plugin.c +++ b/scripts/gcc-plugins/arm_ssp_per_task_plugin.c @@ -13,7 +13,7 @@ static unsigned int arm_pertask_ssp_rtl_execute(void) for (insn = get_insns(); insn; insn = NEXT_INSN(insn)) { const char *sym; rtx body; - rtx masked_sp; + rtx mask, masked_sp; /* * Find a SET insn involving a SYMBOL_REF to __stack_chk_guard @@ -33,12 +33,13 @@ static unsigned int arm_pertask_ssp_rtl_execute(void) * produces the address of the copy of the stack canary value * stored in struct thread_info */ + mask = GEN_INT(sext_hwi(sp_mask, GET_MODE_PRECISION(Pmode))); masked_sp = gen_reg_rtx(Pmode); emit_insn_before(gen_rtx_SET(masked_sp, gen_rtx_AND(Pmode, stack_pointer_rtx, - GEN_INT(sp_mask))), + mask)), insn); SET_SRC(body) = gen_rtx_PLUS(Pmode, masked_sp, @@ -52,6 +53,19 @@ static unsigned int arm_pertask_ssp_rtl_execute(void) #define NO_GATE #include "gcc-generate-rtl-pass.h" +#if BUILDING_GCC_VERSION >= 9000 +static bool no(void) +{ + return false; +} + +static void arm_pertask_ssp_start_unit(void *gcc_data, void *user_data) +{ + targetm.have_stack_protect_combined_set = no; + targetm.have_stack_protect_combined_test = no; +} +#endif + __visible int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version) { @@ -99,5 +113,10 @@ __visible int plugin_init(struct plugin_name_args *plugin_info, register_callback(plugin_info->base_name, PLUGIN_PASS_MANAGER_SETUP, NULL, &arm_pertask_ssp_rtl_pass_info); +#if BUILDING_GCC_VERSION >= 9000 + register_callback(plugin_info->base_name, PLUGIN_START_UNIT, + arm_pertask_ssp_start_unit, NULL); +#endif + return 0; } |