Add support to indicate size and end of assembly functions
In order for the symbol table in the ELF file to contain the size of
functions written in assembly, it is necessary to report it to the
assembler using the .size directive.
To fulfil the above requirements, this patch introduces an 'endfunc'
macro which contains the .endfunc and .size directives. It also adds
a .func directive to the 'func' assembler macro.
The .func/.endfunc have been used so the assembler can fail if
endfunc is omitted.
Fixes ARM-Software/tf-issues#295
Change-Id: If8cb331b03d7f38fe7e3694d4de26f1075b278fc
Signed-off-by: Kévin Petit <kevin.petit@arm.com>
diff --git a/lib/aarch64/cache_helpers.S b/lib/aarch64/cache_helpers.S
index dc60102..0dbab1b 100644
--- a/lib/aarch64/cache_helpers.S
+++ b/lib/aarch64/cache_helpers.S
@@ -56,6 +56,7 @@
b.lo flush_loop
dsb sy
ret
+endfunc flush_dcache_range
/* ------------------------------------------
@@ -75,6 +76,7 @@
b.lo inv_loop
dsb sy
ret
+endfunc inv_dcache_range
/* ---------------------------------------------------------------
@@ -154,6 +156,7 @@
isb
exit:
ret
+endfunc do_dcsw_op
dcsw_loop_table:
dcsw_loop isw
@@ -163,10 +166,12 @@
func dcsw_op_louis
dcsw_op #LOUIS_SHIFT, #CLIDR_FIELD_WIDTH, #LEVEL_SHIFT
+endfunc dcsw_op_louis
func dcsw_op_all
dcsw_op #LOC_SHIFT, #CLIDR_FIELD_WIDTH, #LEVEL_SHIFT
+endfunc dcsw_op_all
/* ---------------------------------------------------------------
* Helper macro for data cache operations by set/way for the
@@ -189,6 +194,7 @@
*/
func dcsw_op_level1
dcsw_op_level #(1 << LEVEL_SHIFT)
+endfunc dcsw_op_level1
/* ---------------------------------------------------------------
* Data cache operations by set/way for level 2 cache
@@ -199,6 +205,7 @@
*/
func dcsw_op_level2
dcsw_op_level #(2 << LEVEL_SHIFT)
+endfunc dcsw_op_level2
/* ---------------------------------------------------------------
* Data cache operations by set/way for level 3 cache
@@ -209,3 +216,4 @@
*/
func dcsw_op_level3
dcsw_op_level #(3 << LEVEL_SHIFT)
+endfunc dcsw_op_level3
diff --git a/lib/aarch64/misc_helpers.S b/lib/aarch64/misc_helpers.S
index f605bf4..5f80b59 100644
--- a/lib/aarch64/misc_helpers.S
+++ b/lib/aarch64/misc_helpers.S
@@ -53,6 +53,7 @@
mov x1, #MPIDR_AFFLVL_SHIFT
lsl x0, x0, x1
ret
+endfunc get_afflvl_shift
func mpidr_mask_lower_afflvls
cmp x1, #3
@@ -62,14 +63,17 @@
lsr x0, x0, x2
lsl x0, x0, x2
ret
+endfunc mpidr_mask_lower_afflvls
func eret
eret
+endfunc eret
func smc
smc #0
+endfunc smc
/* -----------------------------------------------------------------------
* void zeromem16(void *mem, unsigned int length);
@@ -97,7 +101,9 @@
b.eq z_end
strb wzr, [x0], #1
b z_loop1
-z_end: ret
+z_end:
+ ret
+endfunc zeromem16
/* --------------------------------------------------------------------------
@@ -129,7 +135,9 @@
strb w3, [x0], #1
subs x2, x2, #1
b.ne m_loop1
-m_end: ret
+m_end:
+ ret
+endfunc memcpy16
/* ---------------------------------------------------------------------------
* Disable the MMU at EL3
@@ -148,11 +156,13 @@
isb // ensure MMU is off
mov x0, #DCCISW // DCache clean and invalidate
b dcsw_op_all
+endfunc disable_mmu_el3
func disable_mmu_icache_el3
mov x1, #(SCTLR_M_BIT | SCTLR_C_BIT | SCTLR_I_BIT)
b do_disable_mmu
+endfunc disable_mmu_icache_el3
/* ---------------------------------------------------------------------------
* Enable the use of VFP at EL3
@@ -169,4 +179,5 @@
msr cptr_el3, x0
isb
ret
+endfunc enable_vfp
#endif