From 31823b6961d35a5d53e81d3bf4977ad7b2be81dd Mon Sep 17 00:00:00 2001 From: Douglas Raillard Date: Mon, 7 Aug 2017 16:20:46 +0100 Subject: Add CFI debug info to vector entries Add Call Frame Information assembler directives to vector entries so that debuggers display the backtrace of functions that triggered a synchronous exception. For example, a function triggering a data abort will be easier to debug if the backtrace can be displayed from a breakpoint at the beginning of the synchronous exception vector. DS-5 needs CFI otherwise it will not attempt to display the backtrace. Other debuggers might have other needs. These debug information are stored in the ELF file but not in the final binary. Change-Id: I32dc4e4b7af02546c93c1a45c71a1f6d710d36b1 Signed-off-by: Douglas Raillard --- include/common/aarch64/asm_macros.S | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/common') diff --git a/include/common/aarch64/asm_macros.S b/include/common/aarch64/asm_macros.S index 528e29e0..6d6989c2 100644 --- a/include/common/aarch64/asm_macros.S +++ b/include/common/aarch64/asm_macros.S @@ -65,8 +65,12 @@ * security, robustness and potentially facilitates debugging. */ .macro vector_entry label + .cfi_sections .debug_frame .section .vectors, "ax" .align 7, 0 + .type \label, %function + .func \label + .cfi_startproc \label: .endm @@ -77,6 +81,8 @@ * vector entry as the parameter */ .macro check_vector_size since + .endfunc + .cfi_endproc .if (. - \since) > (32 * 4) .error "Vector exceeds 32 instructions" .endif -- cgit v1.2.3