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| author | Stanislav Galabov <sgalabov@gmail.com> | 2016-02-17 15:23:33 +0200 |
|---|---|---|
| committer | Daniel Schwierzeck <daniel.schwierzeck@gmail.com> | 2016-05-21 01:25:50 +0200 |
| commit | 4a48cfc4e57b4b247d94a614b2fbfcf03aa45ea1 (patch) | |
| tree | 40c8e45f1d26aa92ad11b129a4cf3c60e333d069 /examples | |
| parent | 78757d52c8b27f7f33ab4035706796a414c81128 (diff) | |
Add support for 64-bit MIPS to examples/standalone
Signed-off-by: Stanislav Galabov <sgalabov@gmail.com>
Diffstat (limited to 'examples')
| -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 920a0a9cf3..0d62067e03 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 |