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annotate target-utils/libc/memcmp.S @ 926:6a0aa8d36d06

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rvinterf backslash escape: introduce libprint The new helper function library named libprint is meant to replace the badly misnamed libg23, and will soon contain functions for printing all of the same kinds of GPF TST packets that are now handled in libg23. However, we are also moving safe_print_trace() from libasync to this new library, and changing it to emit our new backslash escape format.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 23 May 2023 03:47:46 +0000
parents a675cec34076
children
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a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
Mychaela Falconia <falcon@freecalypso.org>
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1 .text
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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2 .code 32
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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3 .globl bcmp
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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4 .globl memcmp
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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5 bcmp:
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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6 memcmp:
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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7 cmp r2, #0
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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8 beq zero_len_out
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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9 mov r3, r0
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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10 1: ldrb r0, [r3], #1
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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11 ldrb r12, [r1], #1
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
Mychaela Falconia <falcon@freecalypso.org>
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12 subs r0, r0, r12
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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13 bxne lr
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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14 subs r2, r2, #1
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
Mychaela Falconia <falcon@freecalypso.org>
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15 bne 1b
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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16 bx lr
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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17
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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18 zero_len_out:
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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19 mov r0, #0
a675cec34076 target-utils/libc: assembly implementation of bcmp/memcmp
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20 bx lr