Zbigniew Jędrzejewski-Szmek
580f48cc02
I was worried that the text size will grow, but apparently that's not the
case:
With --optimization=2:
$ size build/src/shared/libsystemd-shared-248.a.p/gpt.c.o*
text data bss dec hex filename
3674 1104 0 4778 12aa build/src/shared/libsystemd-shared-248.a.p/gpt.c.o.old
3085 1104 0 4189 105d build/src/shared/libsystemd-shared-248.a.p/gpt.c.o
(I don't understand the generated assembly, even though it seems to work:
Disassembly of section .text.gpt_partition_type_is_usr_verity:
0000000000000000 <gpt_partition_type_is_usr_verity>:
bool gpt_partition_type_is_usr_verity(sd_id128_t id) {
0: 48 83 ec 08 sub $0x8,%rsp
return sd_id128_in_set(id,
4: 4c 8b 05 00 00 00 00 mov 0x0(%rip),%r8 # b <gpt_partition_type_is_usr_verity+0xb>
b: 31 c0 xor %eax,%eax
d: 4c 8b 0d 00 00 00 00 mov 0x0(%rip),%r9 # 14 <gpt_partition_type_is_usr_verity+0x14>
14: 48 8b 15 00 00 00 00 mov 0x0(%rip),%rdx # 1b <gpt_partition_type_is_usr_verity+0x1b>
1b: 48 8b 0d 00 00 00 00 mov 0x0(%rip),%rcx # 22 <gpt_partition_type_is_usr_verity+0x22>
22: 6a 00 pushq $0x0
24: 6a 00 pushq $0x0
26: ff 35 00 00 00 00 pushq 0x0(%rip) # 2c <gpt_partition_type_is_usr_verity+0x2c>
2c: ff 35 00 00 00 00 pushq 0x0(%rip) # 32 <gpt_partition_type_is_usr_verity+0x32>
32: ff 35 00 00 00 00 pushq 0x0(%rip) # 38 <gpt_partition_type_is_usr_verity+0x38>
38: ff 35 00 00 00 00 pushq 0x0(%rip) # 3e <gpt_partition_type_is_usr_verity+0x3e>
3e: ff 35 00 00 00 00 pushq 0x0(%rip) # 44 <gpt_partition_type_is_usr_verity+0x44>
44: ff 35 00 00 00 00 pushq 0x0(%rip) # 4a <gpt_partition_type_is_usr_verity+0x4a>
4a: ff 35 00 00 00 00 pushq 0x0(%rip) # 50 <gpt_partition_type_is_usr_verity+0x50>
50: ff 35 00 00 00 00 pushq 0x0(%rip) # 56 <gpt_partition_type_is_usr_verity+0x56>
56: ff 35 00 00 00 00 pushq 0x0(%rip) # 5c <gpt_partition_type_is_usr_verity+0x5c>
5c: ff 35 00 00 00 00 pushq 0x0(%rip) # 62 <gpt_partition_type_is_usr_verity+0x62>
62: e8 00 00 00 00 callq 67 <gpt_partition_type_is_usr_verity+0x67>
67: 85 c0 test %eax,%eax
69: 0f 95 c0 setne %al
GPT_USR_ARM_VERITY,
GPT_USR_ARM_64_VERITY,
GPT_USR_IA64_VERITY,
GPT_USR_RISCV32_VERITY,
GPT_USR_RISCV64_VERITY);
}
6c: 48 83 c4 68 add $0x68,%rsp
70: c3 retq
)
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