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https://github.com/dolphin-emu/dolphin.git
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Common/GekkoDisassembler: Use std::string_view where applicable
Avoids the use of the null pointer to represent an empty string. Instead, we can simply pass an empty string_view instance. Using std::string_view enforces this invariant at the API level.
This commit is contained in:
Lioncash
parent
d8c3f09c9f
commit
188234b4cd
2 changed files with 33 additions and 33 deletions
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@ -515,7 +515,7 @@ void GekkoDisassembler::cmpi(u32 in, int uimm)
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}
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}
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void GekkoDisassembler::addi(u32 in, const std::string& ext)
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void GekkoDisassembler::addi(u32 in, std::string_view ext)
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{
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if ((in & 0x08000000) && !PPCGETA(in))
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{
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@ -539,7 +539,7 @@ void GekkoDisassembler::addi(u32 in, const std::string& ext)
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}
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// Build a branch instr. and return number of chars written to operand.
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size_t GekkoDisassembler::branch(u32 in, const char* bname, int aform, int bdisp)
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size_t GekkoDisassembler::branch(u32 in, std::string_view bname, int aform, int bdisp)
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{
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int bo = (int)PPCGETD(in);
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int bi = (int)PPCGETA(in);
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@ -639,7 +639,7 @@ void GekkoDisassembler::mcrf(u32 in, char c)
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}
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}
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void GekkoDisassembler::crop(u32 in, const char* n1, const char* n2)
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void GekkoDisassembler::crop(u32 in, std::string_view n1, std::string_view n2)
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{
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int crd = (int)PPCGETD(in);
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int cra = (int)PPCGETA(in);
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@ -647,8 +647,8 @@ void GekkoDisassembler::crop(u32 in, const char* n1, const char* n2)
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if ((in & 1) == 0)
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{
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m_opcode = fmt::format("cr{}", (cra == crb && n2) ? n2 : n1);
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if (cra == crb && n2)
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m_opcode = fmt::format("cr{}", (cra == crb && !n2.empty()) ? n2 : n1);
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if (cra == crb && !n2.empty())
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m_operands = fmt::format("{}, {}", crd, cra);
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else
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m_operands = fmt::format("{}, {}, {}", crd, cra, crb);
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@ -659,7 +659,7 @@ void GekkoDisassembler::crop(u32 in, const char* n1, const char* n2)
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}
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}
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void GekkoDisassembler::nooper(u32 in, const char* name, unsigned char dmode)
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void GekkoDisassembler::nooper(u32 in, std::string_view name, unsigned char dmode)
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{
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if (in & (PPCDMASK | PPCAMASK | PPCBMASK | 1))
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{
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@ -672,7 +672,7 @@ void GekkoDisassembler::nooper(u32 in, const char* name, unsigned char dmode)
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}
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}
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void GekkoDisassembler::rlw(u32 in, const char* name, int i)
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void GekkoDisassembler::rlw(u32 in, std::string_view name, int i)
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{
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int s = (int)PPCGETD(in);
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int a = (int)PPCGETA(in);
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@ -685,13 +685,13 @@ void GekkoDisassembler::rlw(u32 in, const char* name, int i)
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bsh, mb, me, HelperRotateMask(bsh, mb, me));
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}
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void GekkoDisassembler::ori(u32 in, const char* name)
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void GekkoDisassembler::ori(u32 in, std::string_view name)
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{
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m_opcode = name;
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m_operands = imm(in, 1, 1, true);
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}
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void GekkoDisassembler::rld(u32 in, const char* name, int i)
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void GekkoDisassembler::rld(u32 in, std::string_view name, int i)
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{
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int s = (int)PPCGETD(in);
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int a = (int)PPCGETA(in);
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@ -760,8 +760,8 @@ void GekkoDisassembler::trap(u32 in, unsigned char dmode)
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}
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// Standard instruction: xxxx rD,rA,rB
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void GekkoDisassembler::dab(u32 in, const char* name, int mask, int smode, int chkoe, int chkrc,
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unsigned char dmode)
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void GekkoDisassembler::dab(u32 in, std::string_view name, int mask, int smode, int chkoe,
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int chkrc, unsigned char dmode)
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{
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if (chkrc >= 0 && ((in & 1) != (unsigned int)chkrc))
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{
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@ -782,7 +782,7 @@ void GekkoDisassembler::dab(u32 in, const char* name, int mask, int smode, int c
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}
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// Last operand is no register: xxxx rD,rA,NB
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void GekkoDisassembler::rrn(u32 in, const char* name, int smode, int chkoe, int chkrc,
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void GekkoDisassembler::rrn(u32 in, std::string_view name, int smode, int chkoe, int chkrc,
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unsigned char dmode)
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{
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if (chkrc >= 0 && ((in & 1) != (unsigned int)chkrc))
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@ -943,7 +943,7 @@ void GekkoDisassembler::sradi(u32 in)
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m_operands = fmt::format("{}, {}, {}", regnames[a], regnames[s], bsh);
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}
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void GekkoDisassembler::ldst(u32 in, const char* name, char reg, unsigned char dmode)
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void GekkoDisassembler::ldst(u32 in, std::string_view name, char reg, unsigned char dmode)
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{
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int s = (int)PPCGETD(in);
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int a = (int)PPCGETA(in);
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@ -968,7 +968,7 @@ void GekkoDisassembler::ldst(u32 in, const char* name, char reg, unsigned char d
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}
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// Standard floating point instruction: xxxx fD,fA,fC,fB
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void GekkoDisassembler::fdabc(u32 in, const char* name, int mask, unsigned char dmode)
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void GekkoDisassembler::fdabc(u32 in, std::string_view name, int mask, unsigned char dmode)
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{
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int err = 0;
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@ -1005,7 +1005,7 @@ void GekkoDisassembler::fmr(u32 in)
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}
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// Indexed float instruction: xxxx fD,rA,rB
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void GekkoDisassembler::fdab(u32 in, const char* name, int mask)
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void GekkoDisassembler::fdab(u32 in, std::string_view name, int mask)
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{
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m_opcode = name;
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m_operands = fd_ra_rb(in, mask);
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@ -1390,7 +1390,7 @@ u32* GekkoDisassembler::DoDisassembly(bool big_endian)
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break;
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case 129:
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crop(in, "andc", nullptr); // crandc
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crop(in, "andc", {}); // crandc
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break;
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case 150:
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@ -1402,11 +1402,11 @@ u32* GekkoDisassembler::DoDisassembly(bool big_endian)
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break;
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case 225:
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crop(in, "nand", nullptr); // crnand
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crop(in, "nand", {}); // crnand
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break;
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case 257:
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crop(in, "and", nullptr); // crand
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crop(in, "and", {}); // crand
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break;
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case 289:
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@ -1414,7 +1414,7 @@ u32* GekkoDisassembler::DoDisassembly(bool big_endian)
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break;
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case 417:
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crop(in, "orc", nullptr); // crorc
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crop(in, "orc", {}); // crorc
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break;
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case 449:
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@ -34,11 +34,10 @@
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#pragma once
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#include <cstdint>
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#include <string>
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#include <string_view>
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#include "Common/CommonTypes.h"
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#include "Common/StringUtil.h"
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namespace Common
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{
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@ -62,30 +61,31 @@ private:
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static void trapi(u32 in, unsigned char dmode);
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static void cmpi(u32 in, int uimm);
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static void addi(u32 in, const std::string& ext);
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static size_t branch(u32 in, const char* bname, int aform, int bdisp);
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static void addi(u32 in, std::string_view ext);
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static size_t branch(u32 in, std::string_view bname, int aform, int bdisp);
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static void bc(u32 in);
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static void bli(u32 in);
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static void mcrf(u32 in, char c);
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static void crop(u32 in, const char* n1, const char* n2);
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static void nooper(u32 in, const char* name, unsigned char dmode);
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static void rlw(u32 in, const char* name, int i);
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static void ori(u32 in, const char* name);
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static void rld(u32 in, const char* name, int i);
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static void crop(u32 in, std::string_view n1, std::string_view n2);
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static void nooper(u32 in, std::string_view name, unsigned char dmode);
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static void rlw(u32 in, std::string_view name, int i);
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static void ori(u32 in, std::string_view name);
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static void rld(u32 in, std::string_view name, int i);
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static void cmp(u32 in);
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static void trap(u32 in, unsigned char dmode);
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static void dab(u32 in, const char* name, int mask, int smode, int chkoe, int chkrc,
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static void dab(u32 in, std::string_view name, int mask, int smode, int chkoe, int chkrc,
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unsigned char dmode);
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static void rrn(u32 in, std::string_view name, int smode, int chkoe, int chkrc,
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unsigned char dmode);
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static void rrn(u32 in, const char* name, int smode, int chkoe, int chkrc, unsigned char dmode);
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static void mtcr(u32 in);
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static void msr(u32 in, int smode);
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static void mspr(u32 in, int smode);
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static void mtb(u32 in);
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static void sradi(u32 in);
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static void ldst(u32 in, const char* name, char reg, unsigned char dmode);
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static void fdabc(u32 in, const char* name, int mask, unsigned char dmode);
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static void ldst(u32 in, std::string_view name, char reg, unsigned char dmode);
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static void fdabc(u32 in, std::string_view name, int mask, unsigned char dmode);
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static void fmr(u32 in);
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static void fdab(u32 in, const char* name, int mask);
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static void fdab(u32 in, std::string_view name, int mask);
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static void fcmp(u32 in, char c);
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static void mtfsb(u32 in, int n);
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static void ps(u32 inst);
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