Ping.

On 03/05/2013 12:15 PM, Meador Inge wrote:
> Hi All,
> 
> This patch fixes a minor annoyance that causes backtraces to disappear
> inside of aeabi_ldivmod and aeabi_uldivmod due to the lack of appropriate
> DWARF information.  I fixed the problem by adding the necessary cfi_*
> macros in these functions.
> 
> OK?
> 
> 2013-03-05  Meador Inge  <mead...@codesourcery.com>
> 
>       * config/arm/bpabi.S (aeabi_ldivmod): Add DWARF information for
>       computing the location of the link register.
>       (aeabi_uldivmod): Ditto.
> 
> Index: libgcc/config/arm/bpabi.S
> ===================================================================
> --- libgcc/config/arm/bpabi.S (revision 196470)
> +++ libgcc/config/arm/bpabi.S (working copy)
> @@ -123,6 +123,7 @@ ARM_FUNC_START aeabi_ulcmp
>  #ifdef L_aeabi_ldivmod
>  
>  ARM_FUNC_START aeabi_ldivmod
> +     cfi_start       __aeabi_ldivmod, LSYM(Lend_aeabi_ldivmod)
>       test_div_by_zero signed
>  
>       sub sp, sp, #8
> @@ -132,17 +133,20 @@ ARM_FUNC_START aeabi_ldivmod
>  #else
>       do_push {sp, lr}
>  #endif
> +98:  cfi_push 98b - __aeabi_ldivmod, 0xe, -0xc, 0x10
>       bl SYM(__gnu_ldivmod_helper) __PLT__
>       ldr lr, [sp, #4]
>       add sp, sp, #8
>       do_pop {r2, r3}
>       RET
> +     cfi_end LSYM(Lend_aeabi_ldivmod)
>       
>  #endif /* L_aeabi_ldivmod */
>  
>  #ifdef L_aeabi_uldivmod
>  
>  ARM_FUNC_START aeabi_uldivmod
> +     cfi_start       __aeabi_uldivmod, LSYM(Lend_aeabi_uldivmod)
>       test_div_by_zero unsigned
>  
>       sub sp, sp, #8
> @@ -152,11 +156,13 @@ ARM_FUNC_START aeabi_uldivmod
>  #else
>       do_push {sp, lr}
>  #endif
> +98:  cfi_push 98b - __aeabi_uldivmod, 0xe, -0xc, 0x10
>       bl SYM(__gnu_uldivmod_helper) __PLT__
>       ldr lr, [sp, #4]
>       add sp, sp, #8
>       do_pop {r2, r3}
>       RET
> -     
> +     cfi_end LSYM(Lend_aeabi_uldivmod)
> +
>  #endif /* L_aeabi_divmod */
>       
> 


-- 
Meador Inge
CodeSourcery / Mentor Embedded

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