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@@ -195,6 +195,19 @@ ENDPROC(__start)
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# define WDOG_CTL WDOGA_CTL
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#endif
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+ENTRY(__init_clear_bss)
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+ r2 = r2 - r1;
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+ cc = r2 == 0;
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+ if cc jump .L_bss_done;
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+ r2 >>= 2;
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+ p1 = r1;
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+ p2 = r2;
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+ lsetup (1f, 1f) lc0 = p2;
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+1: [p1++] = r0;
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+.L_bss_done:
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+ rts;
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+ENDPROC(__init_clear_bss)
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+
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ENTRY(_real_start)
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/* Enable nested interrupts */
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[--sp] = reti;
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@@ -206,75 +219,34 @@ ENTRY(_real_start)
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w[p0] = r0;
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ssync;
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+ r0 = 0 (x);
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+ /* Zero out all of the fun bss regions */
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#if L1_DATA_A_LENGTH > 0
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r1.l = __sbss_l1;
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r1.h = __sbss_l1;
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r2.l = __ebss_l1;
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r2.h = __ebss_l1;
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- r0 = 0 (z);
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- r2 = r2 - r1;
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- cc = r2 == 0;
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- if cc jump .L_a_l1_done;
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- r2 >>= 2;
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- p1 = r1;
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- p2 = r2;
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- lsetup (.L_clear_a_l1, .L_clear_a_l1 ) lc0 = p2;
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-.L_clear_a_l1:
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- [p1++] = r0;
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-.L_a_l1_done:
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+ call __init_clear_bss
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#endif
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-
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#if L1_DATA_B_LENGTH > 0
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r1.l = __sbss_b_l1;
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r1.h = __sbss_b_l1;
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r2.l = __ebss_b_l1;
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r2.h = __ebss_b_l1;
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- r0 = 0 (z);
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- r2 = r2 - r1;
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- cc = r2 == 0;
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- if cc jump .L_b_l1_done;
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- r2 >>= 2;
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- p1 = r1;
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- p2 = r2;
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- lsetup (.L_clear_b_l1, .L_clear_b_l1 ) lc0 = p2;
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-.L_clear_b_l1:
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- [p1++] = r0;
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-.L_b_l1_done:
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+ call __init_clear_bss
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#endif
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-
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#if L2_LENGTH > 0
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r1.l = __sbss_l2;
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r1.h = __sbss_l2;
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r2.l = __ebss_l2;
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r2.h = __ebss_l2;
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- r0 = 0 (z);
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- r2 = r2 - r1;
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- cc = r2 == 0;
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- if cc jump .L_l2_done;
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- r2 >>= 2;
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- p1 = r1;
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- p2 = r2;
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- lsetup (.L_clear_l2, .L_clear_l2 ) lc0 = p2;
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-.L_clear_l2:
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- [p1++] = r0;
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-.L_l2_done:
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+ call __init_clear_bss
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#endif
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-
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- /* Zero out the bss region
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- * Note: this will fail if bss is 0 bytes ...
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- */
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- r0 = 0 (z);
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r1.l = ___bss_start;
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r1.h = ___bss_start;
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r2.l = ___bss_stop;
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r2.h = ___bss_stop;
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- r2 = r2 - r1;
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- r2 >>= 2;
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- p1 = r1;
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- p2 = r2;
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- lsetup (.L_clear_bss, .L_clear_bss) lc0 = p2;
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-.L_clear_bss:
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- [p1++] = r0;
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+ call __init_clear_bss
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/* In case there is a NULL pointer reference,
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* zero out region before stext
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Mike Frysinger