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| author | Wolfgang Denk <wd@denx.de> | 2007-11-01 22:55:23 +0100 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2007-11-01 22:55:23 +0100 |
| commit | 5b746c3ea8c72035621435853d5b5278af0a1011 (patch) | |
| tree | 87dfb1bbd090602c1e715f25d40b303021d69bf7 /cpu/mips/start.S | |
| parent | b31f64343ead9482cd439b1adbe4c34026a641b1 (diff) | |
| parent | 2fa0dd158c0a3faa6e481169c097e8d7fe662581 (diff) | |
| download | u-boot-imx-5b746c3ea8c72035621435853d5b5278af0a1011.zip u-boot-imx-5b746c3ea8c72035621435853d5b5278af0a1011.tar.gz u-boot-imx-5b746c3ea8c72035621435853d5b5278af0a1011.tar.bz2 | |
Merge branch 'master' of /home/wd/git/u-boot/custodians
Diffstat (limited to 'cpu/mips/start.S')
| -rw-r--r-- | cpu/mips/start.S | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/cpu/mips/start.S b/cpu/mips/start.S index e91e213..074d01d 100644 --- a/cpu/mips/start.S +++ b/cpu/mips/start.S @@ -234,11 +234,11 @@ reset: li t0, CONF_CM_UNCACHED mtc0 t0, CP0_CONFIG - /* Initialize GOT pointer. + /* Initialize $gp. */ bal 1f nop - .word _GLOBAL_OFFSET_TABLE_ + .word _gp 1: move gp, ra lw t1, 0(ra) @@ -306,9 +306,9 @@ relocate_code: move t1, a2 /* - * Fix GOT pointer: + * Fix $gp: * - * New GOT-PTR = (old GOT-PTR - CFG_MONITOR_BASE) + Destination Address + * New $gp = (Old $gp - CFG_MONITOR_BASE) + Destination Address */ move t6, gp sub gp, CFG_MONITOR_BASE @@ -341,15 +341,22 @@ relocate_code: j t0 nop + .gpword _GLOBAL_OFFSET_TABLE_ /* _GLOBAL_OFFSET_TABLE_ - _gp */ .word uboot_end_data .word uboot_end .word num_got_entries in_ram: - /* Now we want to update GOT. + /* + * Now we want to update GOT. + * + * GOT[0] is reserved. GOT[1] is also reserved for the dynamic object + * generated by GNU ld. Skip these reserved entries from relocation. */ lw t3, -4(t0) /* t3 <-- num_got_entries */ - addi t4, gp, 8 /* Skipping first two entries. */ + lw t4, -16(t0) /* t4 <-- (_GLOBAL_OFFSET_TABLE_ - _gp) */ + add t4, t4, gp /* t4 now holds _GLOBAL_OFFSET_TABLE_ */ + addi t4, t4, 8 /* Skipping first two entries. */ li t2, 2 1: lw t1, 0(t4) |