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https://github.com/autc04/Retro68.git
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115 lines
2.5 KiB
ArmAsm
115 lines
2.5 KiB
ArmAsm
.section ".tbss"
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.align 4
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.globl bg1, bg2, bg3, bg4, bg5, bg6, bg7, bg8
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bg1: .word 0
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bg2: .word 0
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bg3: .word 0
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bg4: .word 0
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bg5: .word 0
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bg6: .word 0
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bg7: .word 0
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bg8: .word 0
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bl1: .word 0
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bl2: .word 0
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bl3: .word 0
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bl4: .word 0
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bl5: .word 0
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bl6: .word 0
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bl7: .word 0
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bl8: .word 0
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.text
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.globl _start
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.type _start,#function
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.proc 04
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_start:
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save %sp, -104, %sp
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.hidden _GLOBAL_OFFSET_TABLE_
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sethi %hi(_GLOBAL_OFFSET_TABLE_), %l4
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or %l4, %lo(_GLOBAL_OFFSET_TABLE_), %l4
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nop;nop;nop;nop
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/* IE against global var */
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sethi %tie_hi22(sG6), %o3
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add %o3, %tie_lo10(sG6), %o3
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ld [%l4 + %o3], %o2, %tie_ld(sG6)
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add %g7, %o2, %o4, %tie_add(sG6)
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nop;nop;nop;nop
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/* IE -> LE against global var defined in exec */
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sethi %tie_hi22(bg6), %o3
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add %o3, %tie_lo10(bg6), %o5
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ld [%l4 + %o5], %o2, %tie_ld(bg6)
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add %g7, %o2, %o4, %tie_add(bg6)
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nop;nop;nop;nop
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/* IE -> LE against local var */
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sethi %tie_hi22(bl6), %o3
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add %o3, %tie_lo10(bl6), %o5
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ld [%l4 + %o5], %l2, %tie_ld(bl6)
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add %g7, %l2, %l2, %tie_add(bl6)
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nop;nop;nop;nop
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/* direct %g7 access IE -> LE against local var */
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sethi %tie_hi22(bl8), %o3
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add %o3, %tie_lo10(bl8), %o5
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ld [%l4 + %o5], %l2, %tie_ld(bl8)
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ld [%g7 + %l2], %l2, %tie_add(bl8)
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nop;nop;nop;nop
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/* IE -> LE against hidden but not local var */
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sethi %tie_hi22(sh6), %o3
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add %o3, %tie_lo10(sh6), %o5
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ld [%l4 + %o5], %l2, %tie_ld(sh6)
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add %g7, %l2, %l2, %tie_add(sh6)
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nop;nop;nop;nop
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/* direct %g7 access IE -> LE against hidden but not local var */
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sethi %tie_hi22(bl8), %o3
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add %o3, %tie_lo10(bl8), %o5
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ld [%l4 + %o5], %l2, %tie_ld(bl8)
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stb %l1, [%g7 + %l2], %tie_add(bl8)
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nop;nop;nop;nop
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/* LE, global var defined in exec */
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sethi %tle_hix22(sg2), %l1
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nop
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xor %l1, %tle_lox10(sg2), %l2
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nop
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add %g7, %l2, %l3
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nop;nop;nop;nop
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/* LE, local var */
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sethi %tle_hix22(bl2+2), %o0
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xor %o0, %tle_lox10(bl2+2), %o0
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add %g7, %o0, %o0
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nop;nop;nop;nop
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/* LE, hidden var defined in exec */
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sethi %tle_hix22(sh2+1), %l1
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xor %l1, %tle_lox10(sh2+1), %o5
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add %g7, %o5, %o1
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nop;nop;nop;nop
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/* Direct %g7 access */
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/* LE, global var defined in exec */
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sethi %tle_hix22(sg3), %l1
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xor %l1, %tle_lox10(sg3), %o5
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ld [%g7 + %o5], %o1
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nop;nop;nop;nop
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/* LE, local var */
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sethi %tle_hix22(bl3 + 3), %o0
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xor %o0, %tle_lox10(bl3 + 3), %o0
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stb %o1, [%g7 + %o0]
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nop;nop;nop;nop
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/* LE, hidden var defined in exec */
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sethi %tle_hix22(sh3 + 3), %o2
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xor %o2, %tle_lox10(sh3 + 3), %o4
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ldstub [%g7 + %o4], %o5
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nop;nop;nop;nop
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ret
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restore
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