diff options
Diffstat (limited to 'include/lib')
-rw-r--r-- | include/lib/cpus/aarch32/cpu_macros.S | 3 | ||||
-rw-r--r-- | include/lib/cpus/aarch64/cpu_macros.S | 3 | ||||
-rw-r--r-- | include/lib/pmf/pmf_asm_macros.S | 6 | ||||
-rw-r--r-- | include/lib/utils.h | 23 |
4 files changed, 29 insertions, 6 deletions
diff --git a/include/lib/cpus/aarch32/cpu_macros.S b/include/lib/cpus/aarch32/cpu_macros.S index 525e18caf..aa728b241 100644 --- a/include/lib/cpus/aarch32/cpu_macros.S +++ b/include/lib/cpus/aarch32/cpu_macros.S @@ -161,10 +161,9 @@ .endif /* - * Weakly-bound, optional errata status printing function for CPUs of + * Mandatory errata status printing function for CPUs of * this class. */ - .weak \_name\()_errata_report .word \_name\()_errata_report #ifdef IMAGE_BL32 diff --git a/include/lib/cpus/aarch64/cpu_macros.S b/include/lib/cpus/aarch64/cpu_macros.S index 4672cbc06..14616ace4 100644 --- a/include/lib/cpus/aarch64/cpu_macros.S +++ b/include/lib/cpus/aarch64/cpu_macros.S @@ -183,10 +183,9 @@ .endif /* - * Weakly-bound, optional errata status printing function for CPUs of + * Mandatory errata status printing function for CPUs of * this class. */ - .weak \_name\()_errata_report .quad \_name\()_errata_report #ifdef IMAGE_BL31 diff --git a/include/lib/pmf/pmf_asm_macros.S b/include/lib/pmf/pmf_asm_macros.S index d58829eec..5e19e62f7 100644 --- a/include/lib/pmf/pmf_asm_macros.S +++ b/include/lib/pmf/pmf_asm_macros.S @@ -18,10 +18,12 @@ mov x9, x30 bl plat_my_core_pos mov x30, x9 - ldr x1, =__PERCPU_TIMESTAMP_SIZE__ + adr x2, __PMF_PERCPU_TIMESTAMP_END__ + adr x1, __PMF_TIMESTAMP_START__ + sub x1, x2, x1 mov x2, #(\_tid * PMF_TS_SIZE) madd x0, x0, x1, x2 - ldr x1, =pmf_ts_mem_\_name + adr x1, pmf_ts_mem_\_name add x0, x0, x1 .endm diff --git a/include/lib/utils.h b/include/lib/utils.h index d46d8461d..f324a9909 100644 --- a/include/lib/utils.h +++ b/include/lib/utils.h @@ -67,6 +67,29 @@ void zero_normalmem(void *mem, u_register_t length); * zeroing. */ void zeromem(void *mem, u_register_t length); + +/* + * Utility function to return the address of a symbol. By default, the + * compiler generates adr/adrp instruction pair to return the reference + * to the symbol and this utility is used to override this compiler + * generated to code to use `ldr` instruction. + * + * This helps when Position Independent Executable needs to reference a symbol + * which is constant and does not depend on the execute address of the binary. + */ +#define DEFINE_LOAD_SYM_ADDR(_name) \ +static inline u_register_t load_addr_## _name(void) \ +{ \ + u_register_t v; \ + /* Create a void reference to silence compiler */ \ + (void) _name; \ + __asm__ volatile ("ldr %0, =" #_name : "=r" (v)); \ + return v; \ +} + +/* Helper to invoke the function defined by DEFINE_LOAD_SYM_ADDR() */ +#define LOAD_ADDR_OF(_name) (typeof(_name) *) load_addr_## _name() + #endif /* !(defined(__LINKER__) || defined(__ASSEMBLY__)) */ #endif /* __UTILS_H__ */ |