ta: relax location of ta_head

TAs where required to have the ta_head as at the load address of the TA prior to this patch. This makes the linker script slightly more complicated and also confuses GDB so that an offset must be applied to the load address of the TA when using GDB for debugging. So allow that ta_head symbol to reside anywhere in the ELF binary and also add ta_head to the .dynsym section to make sure that tools and ldelf can find the symbol. This change requires prior updates to tools and ldelf. Reviewed-by: Jerome Forissier <[email protected]> Signed-off-by: Jens Wiklander <[email protected]>
z4a1c2 · Oct 13, 2023 · 4bdddf2 · 4bdddf2
1 parent 6cfa381
commit 4bdddf2
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diff --git a/ta/arch/arm/ta.ld.S b/ta/arch/arm/ta.ld.S
@@ -14,7 +14,6 @@ OUTPUT_ARCH(aarch64)
 #endif
 
 SECTIONS {
-	.ta_head : {*(.ta_head)}
 	.text : {
 		__text_start = .;
 		*(.text .text.*)

diff --git a/ta/link.mk b/ta/link.mk
@@ -47,6 +47,7 @@ ifeq ($(CFG_FTRACE_SUPPORT),y)
 endif
 	$(q)echo "trace_ext_prefix;" >>[email protected]
 	$(q)echo "trace_level;" >>[email protected]
+	$(q)echo "ta_head;" >>[email protected]
 	$(q)echo "};" >>[email protected]
 	$(q)$(call mv-if-changed,[email protected],$@)
 link-ldflags += --dynamic-list $(link-out-dir$(sm))/dyn_list