the --discard-* toggles take away the symbols which comes in the way
when staring at objdumps for debugging low level issues

So don't discard symbols for DODEBUG builds

before
-----

    3388:       j_s.d   [blink]
    338a:       add_s   sp,sp,0x18
    338c:       b.d     332c <_dl_add_elf_hash_table+0x50>
    3390:       mov_s   r2,0
    3392:       nop_s
    3394:       push_s  blink           <--- function not called out
    3396:       st.aw   r13,[sp,-20]
    339a:       std     r14r15,[sp,4]
    339e:       std     r16r17,[sp,12]

after
-----

    3388:       j_s.d   [blink]
    338a:       add_s   sp,sp,0x18
    338c:       b.d     332c <_dl_add_elf_hash_table+0x50>
    3390:       mov_s   r2,0
    3392:       nop_s

  00003394 <add_ldso.isra.9>:
    3394:       push_s  blink
    3396:       st.aw   r13,[sp,-20]
    339a:       std     r14r15,[sp,4]
    339e:       std     r16r17,[sp,12]

Signed-off-by: Vineet Gupta <vgu...@synopsys.com>
---
 ldso/ldso/Makefile.in | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/ldso/ldso/Makefile.in b/ldso/ldso/Makefile.in
index 320e4488ba22..acb1a5b2ac15 100644
--- a/ldso/ldso/Makefile.in
+++ b/ldso/ldso/Makefile.in
@@ -51,8 +51,11 @@ LDFLAGS-$(UCLIBC_LDSO_NAME).so := $(LDFLAGS_NOSTRIP) 
-Wl,-z,defs
 endif
 LDFLAGS-$(UCLIBC_LDSO_NAME).so += -Wl,-e,$(SYMBOL_PREFIX)_start \
        -Wl,-z,now -Wl,-Bsymbolic \
-       -Wl,--export-dynamic $(CFLAG_-Wl--sort-common) -Wl,--discard-locals \
-       $(CFLAG_-Wl--discard-all) -Wl,--no-undefined
+       -Wl,--export-dynamic $(CFLAG_-Wl--sort-common) -Wl,--no-undefined
+
+ifneq ($(DODEBUG),y)
+       LDFLAGS-$(UCLIBC_LDSO_NAME).so +=  -Wl,--discard-locals 
$(CFLAG_-Wl--discard-all)
+endif
 
 LDFLAGS-$(LDSO_PRELINK_SUPPORT)-$(UCLIBC_LDSO_NAME).so += 
-Wl,-defsym=$(SYMBOL_PREFIX)_begin=0
 
-- 
2.7.4

_______________________________________________
devel mailing list
devel@uclibc-ng.org
https://mailman.uclibc-ng.org/cgi-bin/mailman/listinfo/devel

Reply via email to