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Use bitwise OR with mask for sign extension (#2371) 

Sign extend using bitwise OR with mask, instead of unary minus.
Fixes error when building for UWP with Security Development Lifecycle (SDL).
See https://learn.microsoft.com/en-us/cpp/build/reference/sdl-enable-additional-security-checks?view=msvc-170
This commit is contained in:
Lucas Azevedo 2024-06-12 21:56:45 -03:00 committed by GitHub
parent 3f87ce0f6a
commit e90ef3928f
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1 changed files with 4 additions and 4 deletions
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8
arch/SH/SHDisassembler.c
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@ -1459,13 +1459,13 @@ static bool decode_long(uint32_t code, uint64_t address, MCInst *MI,
if (code & 0x00010000) {
// movi20s #imm,
imm <<= 8;
if (imm >= 1 << 27)
imm = -((1 << 28) - imm);
if (imm & (1 << (28 - 1)))
imm |= ~((1 << 28) - 1);
insn = SH_INS_MOVI20S;
} else {
// MOVI20
if (imm >= 1 << 19)
imm = -((1 << 20) - imm);
if (imm & (1 << (28 - 1)))
imm |= ~((1 << 20) - 1);
insn = SH_INS_MOVI20;
}
set_imm(info, 0, imm);