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sh2 drc: moved host register assignment to code emitters, minor bugfixing

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This commit is contained in:
kub 2019-11-09 10:24:52 +01:00
parent 7e940f142e
commit 9bd6706dca
12 changed files with 174 additions and 250 deletions
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29
cpu/drc/emit_x86.c
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@ -17,8 +17,8 @@
enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI, // x86-64,i386 common
xR8, xR9, xR10, xR11, xR12, xR13, xR14, xR15 }; // x86-64 only
#define CONTEXT_REG xBP
#define RET_REG xAX
#define CONTEXT_REG xBP
#define RET_REG xAX
#define ICOND_JO 0x00
#define ICOND_JNO 0x01
@ -935,6 +935,7 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI, // x86-64,i386 common
emith_ret(); \
} while (0)
#define EMITH_JMP_START(cond) { \
u8 *cond_ptr; \
JMP8_POS(cond_ptr)
@ -1006,6 +1007,14 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI, // x86-64,i386 common
#ifndef _WIN32
// SystemV ABI conventions:
// rbx,rbp,r12-r15 are preserved, rax,rcx,rdx,rsi,rdi,r8-r11 are temporaries
// parameters in rdi,rsi,rdx,rcx,r8,r9, return values in rax,rdx
#define PARAM_REGS { xDI, xSI, xDX, xCX, xR8, xR9 }
#define PRESERVED_REGS { xR12, xR13, xR14, xR15, xBX, xBP }
#define TEMPORARY_REGS { xAX, xR10, xR11 }
#define STATIC_SH2_REGS { SHR_SR,xBX , SHR_R0,xR15 }
#define host_arg2reg(rd, arg) \
switch (arg) { \
case 0: rd = xDI; break; \
@ -1037,6 +1046,14 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI, // x86-64,i386 common
#else // _WIN32
// M$ ABI conventions:
// rbx,rbp,rsi,rdi,r12-r15 are preserved, rcx,rdx,rax,r8,r9,r10,r11 temporaries
// parameters in rcx,rdx,r8,r9, return values in rax,rdx
#define PARAM_REGS { xCX, xDX, xR8, xR9 }
#define PRESERVED_REGS { xSI, xDI, xR12, xR13, xR14, xR15, xBX, xBP }
#define TEMPORARY_REGS { xAX, xR10, xR11 }
#define STATIC_SH2_REGS { SHR_SR,xBX , SHR_R0,xR15 , SH2_R0+1,xR14 }
#define host_arg2reg(rd, arg) \
switch (arg) { \
case 0: rd = xCX; break; \
@ -1087,6 +1104,14 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI, // x86-64,i386 common
assert((u32)(rm) < 8u); \
} while (0)
// MS/SystemV ABI: ebx,esi,edi,ebp are preserved, eax,ecx,edx are temporaries
// DRC uses REGPARM to pass upto 3 parameters in registers eax,ecx,edx.
// To avoid conflicts with param passing ebx must be declared temp here.
#define PARAM_REGS { xAX, xDX, xCX }
#define PRESERVED_REGS { xSI, xDI, xBP }
#define TEMPORARY_REGS { xBX }
#define STATIC_SH2_REGS { SHR_SR,xDI , SHR_R0,xSI }
#define host_arg2reg(rd, arg) \
switch (arg) { \
case 0: rd = xAX; break; \