diff options
| author | Wolfgang Denk <wd@denx.de> | 2008-02-14 22:43:22 +0100 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2008-02-14 22:43:22 +0100 |
| commit | e7670f6c1e52ae6d2a43ff75a8bcfa7a5c86e47b (patch) | |
| tree | c105ae64bb203f93e670ef11b3256a4a3086c0ad /examples/stubs.c | |
| parent | 3c234efa693bc59906c2be55c7918ecbb55392ea (diff) | |
| download | u-boot-e7670f6c1e52ae6d2a43ff75a8bcfa7a5c86e47b.tar.gz u-boot-e7670f6c1e52ae6d2a43ff75a8bcfa7a5c86e47b.tar.bz2 u-boot-e7670f6c1e52ae6d2a43ff75a8bcfa7a5c86e47b.zip | |
PPC: Use r2 instead of r29 as global data pointer
R29 was an unlucky choice as with recent toolchains (gcc-4.2.x) gcc
will refuse to use load/store multiple insns; instead, it issues a
list of simple load/store instructions upon function entry and exit,
resulting in bigger code size, which in turn makes the build for a
few boards fail.
Use r2 instead.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'examples/stubs.c')
| -rw-r--r-- | examples/stubs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/examples/stubs.c b/examples/stubs.c index 571c4d50a4..9b3cadde33 100644 --- a/examples/stubs.c +++ b/examples/stubs.c @@ -25,14 +25,14 @@ gd_t *global_data; : : "i"(XF_ ## x * sizeof(void *)) : "eax", "ecx"); #elif defined(CONFIG_PPC) /* - * r29 holds the pointer to the global_data, r11 is a call-clobbered + * r2 holds the pointer to the global_data, r11 is a call-clobbered * register */ #define EXPORT_FUNC(x) \ asm volatile ( \ " .globl " #x "\n" \ #x ":\n" \ -" lwz %%r11, %0(%%r29)\n" \ +" lwz %%r11, %0(%%r2)\n" \ " lwz %%r11, %1(%%r11)\n" \ " mtctr %%r11\n" \ " bctr\n" \ |