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| author | Tom Rini <trini@konsulko.com> | 2016-05-21 00:43:27 (GMT) |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-05-23 15:51:37 (GMT) |
| commit | d7d000311285e4b8d11e089ca13ea456a01be3b8 (patch) | |
| tree | d156930b1f4ebf864dd42ec6e43e24045d975c55 /examples/standalone | |
| parent | d38fca40c84e6d5f73dfe43cef4c46d42f90aa66 (diff) | |
| parent | 40ba13c98627055465709acd67872e381b42f928 (diff) | |
| download | u-boot-d7d000311285e4b8d11e089ca13ea456a01be3b8.tar.xz | |
Merge branch 'master' of git://git.denx.de/u-boot-mips
Diffstat (limited to 'examples/standalone')
| -rw-r--r-- | examples/standalone/stubs.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/examples/standalone/stubs.c b/examples/standalone/stubs.c index 920a0a9..0d62067 100644 --- a/examples/standalone/stubs.c +++ b/examples/standalone/stubs.c @@ -65,6 +65,23 @@ gd_t *global_data; : : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "ip"); #endif #elif defined(CONFIG_MIPS) +#ifdef CONFIG_CPU_MIPS64 +/* + * k0 ($26) holds the pointer to the global_data; t9 ($25) is a call- + * clobbered register that is also used to set gp ($26). Note that the + * jr instruction also executes the instruction immediately following + * it; however, GCC/mips generates an additional `nop' after each asm + * statement + */ +#define EXPORT_FUNC(f, a, x, ...) \ + asm volatile ( \ +" .globl " #x "\n" \ +#x ":\n" \ +" ld $25, %0($26)\n" \ +" ld $25, %1($25)\n" \ +" jr $25\n" \ + : : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "t9"); +#else /* * k0 ($26) holds the pointer to the global_data; t9 ($25) is a call- * clobbered register that is also used to set gp ($26). Note that the @@ -80,6 +97,7 @@ gd_t *global_data; " lw $25, %1($25)\n" \ " jr $25\n" \ : : "i"(offsetof(gd_t, jt)), "i"(FO(x)) : "t9"); +#endif #elif defined(CONFIG_NIOS2) /* * gp holds the pointer to the global_data, r8 is call-clobbered |