diff options
| author | Alexandre Oliva <aoliva@redhat.com> | 2002-02-08 10:11:13 +0300 |
|---|---|---|
| committer | Alexandre Oliva <aoliva@redhat.com> | 2002-02-08 10:11:13 +0300 |
| commit | 9f25eed9c96cb37ee58fcb65aafb44f9c6183dde (patch) | |
| tree | 883185ab319291de419f4bba42754e7a71b23560 /newlib/libc/sys/sh | |
| parent | 561486e7f1220b06414524d9b72eca3794a45dd3 (diff) | |
Contribute sh64-elf.
2001-03-13 Alexandre Oliva <aoliva@redhat.com>
* configure.host (newlib_cflags) [sh*-*-*]: Enable long long
support in printf.
2001-01-29 Alexandre Oliva <aoliva@redhat.com>
* libc/machine/sh/setjmp.S [SH5]: Switch to SHmedia mode before
any labels.
2001-01-24 Alexandre Oliva <aoliva@redhat.com>
* libc/sys/sh/trap.S (___trap34) [SH5]: Don't trash r2.
2000-12-16 Alexandre Oliva <aoliva@redhat.com>
* libc/machine/sh/configure.in: Rework conditionals.
* libc/machine/sh/Makefile.am: Likewise.
* libc/machine/sh/configure, libc/machine/sh/Makefile.in: Rebuilt.
2000-12-01 Alexandre Oliva <aoliva@redhat.com>
* configure.host: Match `sh*'.
* libc/include/machine/setjmp.h: Define for SH5.
* libc/machine/sh/configure.in: Detect SH5.
* libc/machine/sh/configure: Rebuilt.
* libc/machine/sh/Makefile.am: Use only setjmp.S for SH5.
* libc/machine/sh/Makefile.in: Rebuilt.
* libc/machine/sh/asm.h: Adjust for SH5.
* libc/machine/sh/setjmp.S: Implement in SHmedia.
* libc/sys/sh/crt0.S: Likewise.
* libc/sys/sh/trap.S: Likewise.
Diffstat (limited to 'newlib/libc/sys/sh')
| -rw-r--r-- | newlib/libc/sys/sh/crt0.S | 67 | ||||
| -rw-r--r-- | newlib/libc/sys/sh/trap.S | 28 |
2 files changed, 95 insertions, 0 deletions
diff --git a/newlib/libc/sys/sh/crt0.S b/newlib/libc/sys/sh/crt0.S index 88c9fac0d..6eccf3a4b 100644 --- a/newlib/libc/sys/sh/crt0.S +++ b/newlib/libc/sys/sh/crt0.S @@ -1,3 +1,69 @@ + +#ifdef __SH5__ + .section .data,"aw" + .global ___data +___data: + + .section .rodata,"a" + .global ___rodata +___rodata: + +#if __SH5__ == 64 + .section .text,"ax" +#define LOAD_ADDR(sym, reg) \ + movi (sym >> 48) & 65535, reg; \ + shori (sym >> 32) & 65535, reg; \ + shori (sym >> 16) & 65535, reg; \ + shori sym & 65535, reg +#else + .mode SHmedia + .section .text..SHmedia32,"ax" +#define LOAD_ADDR(sym, reg) \ + movi (sym >> 16) & 65535, reg; \ + shori sym & 65535, reg +#endif + .global start +start: + LOAD_ADDR (_stack, r15) + + pt/l zero_bss_loop, tr0 + pt/l _atexit, tr1 + pt/l _init, tr5 + pt/l _main, tr6 + pt/l _exit, tr7 + + ! zero out bss + LOAD_ADDR (_edata, r0) + LOAD_ADDR (_end, r1) +zero_bss_loop: + stx.q r0, r63, r63 + addi r0, 8, r0 + bgt/l r1, r0, tr0 + + LOAD_ADDR (___data, r26) + LOAD_ADDR (___rodata, r27) + +#if ! __SH4_NOFPU__ + getcon cr0, r0 + movi 1, r1 + shlli r1, 15, r1 + or r1, r0, r0 + putcon r0, cr0 +#endif + + ! arrange for exit to call fini + LOAD_ADDR (_fini, r2) + blink tr1, r18 + + ! call init + blink tr5, r18 + + ! call the mainline + blink tr6, r18 + + ! call exit + blink tr7, r18 +#else .section .text .global start start: @@ -46,6 +112,7 @@ main_k: .long _main exit_k: .long _exit +#endif #ifdef __ELF__ .section .stack,"aw" diff --git a/newlib/libc/sys/sh/trap.S b/newlib/libc/sys/sh/trap.S index 4512293e3..0eb6e5dfe 100644 --- a/newlib/libc/sys/sh/trap.S +++ b/newlib/libc/sys/sh/trap.S @@ -1,3 +1,30 @@ +#if __SH5__ + .mode SHmedia +#if __SH5__ == 32 && __SHMEDIA__ + .section .text..SHmedia32, "ax" +#else + .text +#endif + .global ___trap34 +___trap34: + movi 34, r0 + trapa r0 + pt/l ret, tr1 + ptabs/l r18, tr0 + beqi r1, 0, tr1 +#if __SH5__ == 64 + movi ((_errno >> 48) & 65535), r0 + shori ((_errno >> 32) & 65535), r0 + shori ((_errno >> 16) & 65535), r0 +#else + movi ((_errno >> 16) & 65535), r0 +#endif + shori (_errno & 65535), r0 + stx.l r0, r63, r1 +ret: + blink tr0, r63 + +#else .text .global ___trap34 ___trap34: @@ -13,3 +40,4 @@ ret: .align 2 perrno: .long _errno +#endif /* ! __SH5__ */ |