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Last change
on this file since 444 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
2.2 KB
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| 1 | |
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| 2 | #ifdef __SH5__ |
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| 3 | .section .data,"aw" |
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| 4 | .global ___data |
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| 5 | ___data: |
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| 6 | |
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| 7 | .section .rodata,"a" |
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| 8 | .global ___rodata |
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| 9 | ___rodata: |
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| 10 | |
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| 11 | #if __SH5__ == 64 |
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| 12 | .section .text,"ax" |
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| 13 | #define LOAD_ADDR(sym, reg) \ |
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| 14 | movi (sym >> 48) & 65535, reg; \ |
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| 15 | shori (sym >> 32) & 65535, reg; \ |
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| 16 | shori (sym >> 16) & 65535, reg; \ |
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| 17 | shori sym & 65535, reg |
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| 18 | #else |
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| 19 | .mode SHmedia |
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| 20 | .section .text..SHmedia32,"ax" |
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| 21 | #define LOAD_ADDR(sym, reg) \ |
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| 22 | movi (sym >> 16) & 65535, reg; \ |
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| 23 | shori sym & 65535, reg |
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| 24 | #endif |
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| 25 | .global start |
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| 26 | start: |
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| 27 | LOAD_ADDR (_stack, r15) |
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| 28 | |
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| 29 | pt/l zero_bss_loop, tr0 |
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| 30 | pt/l _atexit, tr1 |
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| 31 | pt/l _init, tr5 |
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| 32 | pt/l _main, tr6 |
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| 33 | pt/l _exit, tr7 |
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| 34 | |
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| 35 | ! zero out bss |
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| 36 | LOAD_ADDR (_edata, r0) |
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| 37 | LOAD_ADDR (_end, r1) |
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| 38 | zero_bss_loop: |
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| 39 | stx.q r0, r63, r63 |
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| 40 | addi r0, 8, r0 |
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| 41 | bgt/l r1, r0, tr0 |
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| 42 | |
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| 43 | LOAD_ADDR (___data, r26) |
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| 44 | LOAD_ADDR (___rodata, r27) |
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| 45 | |
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| 46 | #if ! __SH4_NOFPU__ |
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| 47 | getcon cr0, r0 |
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| 48 | movi 1, r1 |
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| 49 | shlli r1, 15, r1 |
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| 50 | or r1, r0, r0 |
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| 51 | putcon r0, cr0 |
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| 52 | #endif |
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| 53 | |
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| 54 | ! arrange for exit to call fini |
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| 55 | LOAD_ADDR (_fini, r2) |
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| 56 | blink tr1, r18 |
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| 57 | |
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| 58 | ! call init |
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| 59 | blink tr5, r18 |
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| 60 | |
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| 61 | ! call the mainline |
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| 62 | blink tr6, r18 |
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| 63 | |
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| 64 | ! call exit |
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| 65 | blink tr7, r18 |
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| 66 | #else |
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| 67 | .section .text |
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| 68 | .global start |
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| 69 | start: |
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| 70 | mov.l stack_k,r15 |
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| 71 | |
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| 72 | ! zero out bss |
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| 73 | mov.l edata_k,r0 |
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| 74 | mov.l end_k,r1 |
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| 75 | mov #0,r2 |
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| 76 | start_l: |
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| 77 | mov.l r2,@r0 |
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| 78 | add #4,r0 |
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| 79 | cmp/ge r0,r1 |
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| 80 | bt start_l |
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| 81 | |
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| 82 | #ifndef __SH2A_NOFPU__ |
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| 83 | #if defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY) || defined(__SH2A__) |
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| 84 | mov.l set_fpscr_k, r1 |
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| 85 | jsr @r1 |
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| 86 | mov #0,r4 |
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| 87 | lds r3,fpscr |
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| 88 | #endif /* defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__) || defined(__SH2A__) */ |
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| 89 | #endif /* !__SH2A_NOFPU__ */ |
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| 90 | |
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| 91 | ! call the mainline |
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| 92 | mov.l main_k,r0 |
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| 93 | jsr @r0 |
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| 94 | or r0,r0 |
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| 95 | |
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| 96 | ! call exit |
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| 97 | mov r0,r4 |
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| 98 | mov.l exit_k,r0 |
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| 99 | jsr @r0 |
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| 100 | or r0,r0 |
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| 101 | |
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| 102 | .align 2 |
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| 103 | #ifndef __SH2A_NOFPU__ |
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| 104 | #if defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__) || defined(__SH2A__) |
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| 105 | set_fpscr_k: |
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| 106 | .long ___set_fpscr |
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| 107 | #endif /* defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(SH4_SINGLE_ONLY) || defined(__SH2A__) */ |
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| 108 | #endif /* !__SH2A_NOFPU__ */ |
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| 109 | stack_k: |
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| 110 | .long _stack |
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| 111 | edata_k: |
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| 112 | .long _edata |
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| 113 | end_k: |
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| 114 | .long _end |
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| 115 | main_k: |
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| 116 | .long _main |
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| 117 | exit_k: |
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| 118 | .long _exit |
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| 119 | #endif |
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