diff options
| author | Thomas Martitz <kugel@rockbox.org> | 2010-08-24 12:38:42 +0000 |
|---|---|---|
| committer | Thomas Martitz <kugel@rockbox.org> | 2010-08-24 12:38:42 +0000 |
| commit | 46454ac2a8a7d693ac135f0d4a9461bbcf24eea9 (patch) | |
| tree | 86488784b36537f382ccd448c6684d60f1540527 /lib/libsetjmp/mips | |
| parent | 20de4c55a2ddfa802a01cc353884d73a934bf7ba (diff) | |
Move setjmp to lib and add setjmp for sh (imported from newlib) and compile it as separate library.
It's used by both, plugins and codecs, and sh/hwcodec doesn't compile codecs
so it doesn't fit into sources.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27869 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'lib/libsetjmp/mips')
| -rw-r--r-- | lib/libsetjmp/mips/setjmp.S | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/lib/libsetjmp/mips/setjmp.S b/lib/libsetjmp/mips/setjmp.S new file mode 100644 index 0000000000..7fa127a7a4 --- /dev/null +++ b/lib/libsetjmp/mips/setjmp.S @@ -0,0 +1,101 @@ +#include "config.h" +#include "mips.h" + +/* This is a simple version of setjmp and longjmp for MIPS 32 and 64. + + Ian Lance Taylor, Cygnus Support, 13 May 1993. */ + +#ifdef __mips16 +/* This file contains 32 bit assembly code. */ + .set nomips16 +#endif + +#define GPR_LAYOUT \ + GPR_OFFSET ($16, 0); \ + GPR_OFFSET ($17, 1); \ + GPR_OFFSET ($18, 2); \ + GPR_OFFSET ($19, 3); \ + GPR_OFFSET ($20, 4); \ + GPR_OFFSET ($21, 5); \ + GPR_OFFSET ($22, 6); \ + GPR_OFFSET ($23, 7); \ + GPR_OFFSET ($29, 8); \ + GPR_OFFSET ($30, 9); \ + GPR_OFFSET ($31, 10) + +#define NUM_GPRS_SAVED 11 + +#ifdef __mips_hard_float +#define FPR_LAYOUT \ + FPR_OFFSET ($f20, 0); \ + FPR_OFFSET ($f21, 1); \ + FPR_OFFSET ($f22, 2); \ + FPR_OFFSET ($f23, 3); \ + FPR_OFFSET ($f24, 4); \ + FPR_OFFSET ($f25, 5); \ + FPR_OFFSET ($f26, 6); \ + FPR_OFFSET ($f27, 7); \ + FPR_OFFSET ($f28, 8); \ + FPR_OFFSET ($f29, 9); \ + FPR_OFFSET ($f30, 10); \ + FPR_OFFSET ($f31, 11) +#else +#define FPR_LAYOUT +#endif + +#if CPU_MIPS == 64 +#define BYTES_PER_WORD 8 +#define LOAD_GPR ld +#define LOAD_FPR ldc1 +#define STORE_GPR sd +#define STORE_FPR sdc1 +#else +#define BYTES_PER_WORD 4 +#define LOAD_GPR lw +#define LOAD_FPR lwc1 +#define STORE_GPR sw +#define STORE_FPR swc1 +#endif + +#define GPOFF(INDEX) (INDEX * BYTES_PER_WORD) +#define FPOFF(INDEX) ((INDEX + NUM_GPRS_SAVED) * BYTES_PER_WORD) + +/* int setjmp (jmp_buf); */ + .globl setjmp + .ent setjmp +setjmp: + .frame sp, 0, ra + +#define GPR_OFFSET(REG, INDEX) STORE_GPR REG,GPOFF(INDEX)(a0) +#define FPR_OFFSET(REG, INDEX) STORE_FPR REG,FPOFF(INDEX)(a0) + GPR_LAYOUT + FPR_LAYOUT +#undef GPR_OFFSET +#undef FPR_OFFSET + + move v0, $0 + j ra + + .end setjmp + +/* volatile void longjmp (jmp_buf, int); */ + .globl longjmp + .ent longjmp +longjmp: + .frame sp, 0, ra + +#define GPR_OFFSET(REG, INDEX) LOAD_GPR REG,GPOFF(INDEX)(a0) +#define FPR_OFFSET(REG, INDEX) LOAD_FPR REG,FPOFF(INDEX)(a0) + GPR_LAYOUT + FPR_LAYOUT +#undef GPR_OFFSET +#undef FPR_OFFSET + + bne a1, $0, 1f + li a1, 1 +1: + move v0, a1 + j ra + + .end longjmp + |