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authorBen Gardiner <bengardiner@nanometrics.ca>2011-04-28 11:03:21 +0000
committerWolfgang Denk <wd@denx.de>2011-05-12 23:34:02 +0200
commit7124015adad59dea5e72103f63531f3367c6df80 (patch)
treec0e88980d6512a06d82f17c9eb8111cbdcffc3de
parentf4379ceff0876f9e4c7c90796d64b6dd5351512a (diff)
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README.arm-relocation: get relocated address in gdb
When your emulator is connected at reset (or is used to load u-boot) it is possible to get the relocation address from the gd->relocaddr since gd is always in r8 (on ARM) it is addressable before the gdb has remapped symbols. Document this alternate method in-line with the original method written by Heiko Schocher. Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca> CC: Heiko Schocher <hs@denx.de> CC: Wolfgang Denk <wd@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
-rw-r--r--doc/README.arm-relocation8
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/README.arm-relocation b/doc/README.arm-relocation
index 8bfb500..45f5ea7 100644
--- a/doc/README.arm-relocation
+++ b/doc/README.arm-relocation
@@ -164,6 +164,7 @@ Program received signal SIGSTOP, Stopped (signal).
add-symbol-file u-boot 0x8ff08000
^^^^^^^^^^
get this address from u-boot bdinfo command
+ or get it from gd->relocaddr in gdb
=> bdinfo
rch_number = XXXXXXXXXX
@@ -182,4 +183,11 @@ irq_sp = XXXXXXXXXX
sp start = XXXXXXXXXX
FB base = XXXXXXXXXX
+or interrupt execution by any means and re-load the symbols at the location
+specified by gd->relocaddr -- this is only valid after board_init_f.
+
+(gdb) set $s = gd->relocaddr
+(gdb) symbol-file
+(gdb) add-symbol-file u-boot $s
+
Now you can use gdb as usual :-)