diff options
author | Christian Cunningham <cc@localhost> | 2024-07-13 21:32:21 -0700 |
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committer | Christian Cunningham <cc@localhost> | 2024-07-13 21:32:21 -0700 |
commit | a4e81a265038b42acd27ef315d1796dd332c50e0 (patch) | |
tree | cca5b5af2a4285fdb2b3060bbd06701f9ef09101 /lstring.inc | |
parent | 537b6c834b541b1f8f15f2ad31dcdc7f9d9a71a5 (diff) |
Strings
Diffstat (limited to 'lstring.inc')
-rw-r--r-- | lstring.inc | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/lstring.inc b/lstring.inc new file mode 100644 index 0000000..b7eed88 --- /dev/null +++ b/lstring.inc @@ -0,0 +1,35 @@ +%ifndef LSTRING_INC +%define LSTRING_INC +%ifndef SYS_INC +%include "sys.inc" +%endif + +%macro make_lstring 2-* +%1_len_b: dq %1_len +%1: db %2 + %rep %0-2 + db %3 + %rotate 1 + %endrep + %rotate 2 +%1_len equ $-%1 +%endm + + section .text +print_lstring: + ;; rax = lstring address + push rbp + mov rbp, rsp + ;; + push rax + mov rdx, [rax] + mov rsi, rax + add rsi, 8 + mov rax, SYS_WRITE + mov rdi, 1 + syscall + ;; + mov rsp, rbp + pop rbp + ret +%endif |