[Git][ghc/ghc][wip/andreask/zero_reg] rts: Split up rts/include/stg/MachRegs.h by arch
Andreas Klebinger (@AndreasK)
gitlab at gitlab.haskell.org
Mon Oct 2 12:52:52 UTC 2023
Andreas Klebinger pushed to branch wip/andreask/zero_reg at Glasgow Haskell Compiler / GHC
Commits:
3609031c by Andreas Klebinger at 2023-10-02T14:52:26+02:00
rts: Split up rts/include/stg/MachRegs.h by arch
- - - - -
15 changed files:
- .gitignore
- compiler/CodeGen.Platform.h
- compiler/GHC/CmmToAsm.hs
- compiler/ghc.cabal.in
- configure.ac
- rts/include/stg/MachRegs.h
- + rts/include/stg/MachRegs/arm32.h
- + rts/include/stg/MachRegs/arm64.h
- + rts/include/stg/MachRegs/loongarch64.h
- + rts/include/stg/MachRegs/ppc.h
- + rts/include/stg/MachRegs/riscv64.h
- + rts/include/stg/MachRegs/s390x.h
- + rts/include/stg/MachRegs/wasm32.h
- + rts/include/stg/MachRegs/x86.h
- rts/rts.cabal.in
Changes:
=====================================
.gitignore
=====================================
@@ -111,6 +111,7 @@ _darcs/
/compiler/ClosureTypes.h
/compiler/FunTypes.h
/compiler/MachRegs.h
+/compiler/MachRegs
/compiler/ghc-llvm-version.h
/compiler/ghc.cabal
/compiler/ghc.cabal.old
=====================================
compiler/CodeGen.Platform.h
=====================================
@@ -480,6 +480,7 @@ import GHC.Platform.Reg
#endif
+-- See also Note [Caller saves and callee-saves regs.]
callerSaves :: GlobalReg -> Bool
#if defined(CALLER_SAVES_Base)
callerSaves BaseReg = True
=====================================
compiler/GHC/CmmToAsm.hs
=====================================
@@ -15,7 +15,8 @@
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE UnboxedTuples #-}
--- | Native code generator
+-- | Note [Native code generator]
+-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
-- The native-code generator has machine-independent and
-- machine-dependent modules.
@@ -23,45 +24,39 @@
-- This module ("GHC.CmmToAsm") is the top-level machine-independent
-- module. Before entering machine-dependent land, we do some
-- machine-independent optimisations (defined below) on the
--- 'CmmStmts's.
+-- 'CmmStmts's. (Which ideally would be folded into CmmOpt ...)
--
-- We convert to the machine-specific 'Instr' datatype with
-- 'cmmCodeGen', assuming an infinite supply of registers. We then use
--- a machine-independent register allocator ('regAlloc') to rejoin
+-- a (mostly) machine-independent register allocator to rejoin
-- reality. Obviously, 'regAlloc' has machine-specific helper
--- functions (see about "RegAllocInfo" below).
+-- functions (see the used register allocator for details).
--
-- Finally, we order the basic blocks of the function so as to minimise
-- the number of jumps between blocks, by utilising fallthrough wherever
-- possible.
--
--- The machine-dependent bits break down as follows:
+-- The machine-dependent bits are generally contained under
+-- GHC/CmmToAsm/<Arch>/* and generally breaks down as follows:
--
--- * ["MachRegs"] Everything about the target platform's machine
+-- * "Regs": Everything about the target platform's machine
-- registers (and immediate operands, and addresses, which tend to
-- intermingle/interact with registers).
--
--- * ["MachInstrs"] Includes the 'Instr' datatype (possibly should
--- have a module of its own), plus a miscellany of other things
+-- * "Instr": Includes the 'Instr' datatype plus a miscellany of other things
-- (e.g., 'targetDoubleSize', 'smStablePtrTable', ...)
--
--- * ["MachCodeGen"] is where 'Cmm' stuff turns into
+-- * "CodeGen": is where 'Cmm' stuff turns into
-- machine instructions.
--
--- * ["PprMach"] 'pprInstr' turns an 'Instr' into text (well, really
+-- * "Ppr": 'pprInstr' turns an 'Instr' into text (well, really
-- a 'SDoc').
--
--- * ["RegAllocInfo"] In the register allocator, we manipulate
--- 'MRegsState's, which are 'BitSet's, one bit per machine register.
--- When we want to say something about a specific machine register
--- (e.g., ``it gets clobbered by this instruction''), we set/unset
--- its bit. Obviously, we do this 'BitSet' thing for efficiency
--- reasons.
+-- The register allocators lives under GHC.CmmToAsm.Reg.*, there is both a Linear and a Graph
+-- based register allocator. Both of which have their own notes describing them. They
+-- are mostly platform independent but there are some platform specific files
+-- encoding architecture details under Reg/<Allocator>/<Arch.hs>
--
--- The 'RegAllocInfo' module collects together the machine-specific
--- info needed to do register allocation.
---
--- * ["RegisterAlloc"] The (machine-independent) register allocator.
-- -}
--
module GHC.CmmToAsm
=====================================
compiler/ghc.cabal.in
=====================================
@@ -34,6 +34,14 @@ extra-source-files:
ClosureTypes.h
FunTypes.h
MachRegs.h
+ MachRegs/arm32.h
+ MachRegs/arm64.h
+ MachRegs/loongarch64.h
+ MachRegs/ppc.h
+ MachRegs/riscv64.h
+ MachRegs/s390x.h
+ MachRegs/wasm32.h
+ MachRegs/x86.h
ghc-llvm-version.h
=====================================
configure.ac
=====================================
@@ -578,6 +578,15 @@ ln -f rts/include/rts/Bytecodes.h compiler/
ln -f rts/include/rts/storage/ClosureTypes.h compiler/
ln -f rts/include/rts/storage/FunTypes.h compiler/
ln -f rts/include/stg/MachRegs.h compiler/
+mkdir -p compiler/MachRegs
+ln -f rts/include/stg/MachRegs/arm32.h compiler/MachRegs/arm32.h
+ln -f rts/include/stg/MachRegs/arm64.h compiler/MachRegs/arm64.h
+ln -f rts/include/stg/MachRegs/loongarch64.h compiler/MachRegs/loongarch64.h
+ln -f rts/include/stg/MachRegs/ppc.h compiler/MachRegs/ppc.h
+ln -f rts/include/stg/MachRegs/riscv64.h compiler/MachRegs/riscv64.h
+ln -f rts/include/stg/MachRegs/s390x.h compiler/MachRegs/s390x.h
+ln -f rts/include/stg/MachRegs/wasm32.h compiler/MachRegs/wasm32.h
+ln -f rts/include/stg/MachRegs/x86.h compiler/MachRegs/x86.h
AC_MSG_NOTICE([done.])
dnl ** Copy the files from the "fs" utility into the right folders.
=====================================
rts/include/stg/MachRegs.h
=====================================
@@ -51,637 +51,54 @@
#elif MACHREGS_NO_REGS == 0
/* ----------------------------------------------------------------------------
- Caller saves and callee-saves regs.
-
+ Note [Caller saves and callee-saves regs.]
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Caller-saves regs have to be saved around C-calls made from STG
land, so this file defines CALLER_SAVES_<reg> for each <reg> that
is designated caller-saves in that machine's C calling convention.
+ NB: Caller-saved registers not mapped to a STG register don't
+ require a CALLER_SAVES_ define.
As it stands, the only registers that are ever marked caller saves
- are the RX, FX, DX and USER registers; as a result, if you
+ are the RX, FX, DX, XMM and USER registers; as a result, if you
decide to caller save a system register (e.g. SP, HP, etc), note that
this code path is completely untested! -- EZY
See Note [Register parameter passing] for details.
-------------------------------------------------------------------------- */
-/* -----------------------------------------------------------------------------
- The x86 register mapping
-
- Ok, we've only got 6 general purpose registers, a frame pointer and a
- stack pointer. \tr{%eax} and \tr{%edx} are return values from C functions,
- hence they get trashed across ccalls and are caller saves. \tr{%ebx},
- \tr{%esi}, \tr{%edi}, \tr{%ebp} are all callee-saves.
-
- Reg STG-Reg
- ---------------
- ebx Base
- ebp Sp
- esi R1
- edi Hp
-
- Leaving SpLim out of the picture.
- -------------------------------------------------------------------------- */
-
-#if defined(MACHREGS_i386)
-
-#define REG(x) __asm__("%" #x)
-
-#if !defined(not_doing_dynamic_linking)
-#define REG_Base ebx
-#endif
-#define REG_Sp ebp
-
-#if !defined(STOLEN_X86_REGS)
-#define STOLEN_X86_REGS 4
-#endif
-
-#if STOLEN_X86_REGS >= 3
-# define REG_R1 esi
-#endif
-
-#if STOLEN_X86_REGS >= 4
-# define REG_Hp edi
-#endif
-#define REG_MachSp esp
-
-#define REG_XMM1 xmm0
-#define REG_XMM2 xmm1
-#define REG_XMM3 xmm2
-#define REG_XMM4 xmm3
-
-#define REG_YMM1 ymm0
-#define REG_YMM2 ymm1
-#define REG_YMM3 ymm2
-#define REG_YMM4 ymm3
-
-#define REG_ZMM1 zmm0
-#define REG_ZMM2 zmm1
-#define REG_ZMM3 zmm2
-#define REG_ZMM4 zmm3
-
-#define MAX_REAL_VANILLA_REG 1 /* always, since it defines the entry conv */
-#define MAX_REAL_FLOAT_REG 0
-#define MAX_REAL_DOUBLE_REG 0
-#define MAX_REAL_LONG_REG 0
-#define MAX_REAL_XMM_REG 4
-#define MAX_REAL_YMM_REG 4
-#define MAX_REAL_ZMM_REG 4
-
-/* -----------------------------------------------------------------------------
- The x86-64 register mapping
-
- %rax caller-saves, don't steal this one
- %rbx YES
- %rcx arg reg, caller-saves
- %rdx arg reg, caller-saves
- %rsi arg reg, caller-saves
- %rdi arg reg, caller-saves
- %rbp YES (our *prime* register)
- %rsp (unavailable - stack pointer)
- %r8 arg reg, caller-saves
- %r9 arg reg, caller-saves
- %r10 caller-saves
- %r11 caller-saves
- %r12 YES
- %r13 YES
- %r14 YES
- %r15 YES
-
- %xmm0-7 arg regs, caller-saves
- %xmm8-15 caller-saves
-
- Use the caller-saves regs for Rn, because we don't always have to
- save those (as opposed to Sp/Hp/SpLim etc. which always have to be
- saved).
-
- --------------------------------------------------------------------------- */
-
-#elif defined(MACHREGS_x86_64)
-
-#define REG(x) __asm__("%" #x)
-
-#define REG_Base r13
-#define REG_Sp rbp
-#define REG_Hp r12
-#define REG_R1 rbx
-#define REG_R2 r14
-#define REG_R3 rsi
-#define REG_R4 rdi
-#define REG_R5 r8
-#define REG_R6 r9
-#define REG_SpLim r15
-#define REG_MachSp rsp
-
-/*
-Map both Fn and Dn to register xmmn so that we can pass a function any
-combination of up to six Float# or Double# arguments without touching
-the stack. See Note [Overlapping global registers] for implications.
-*/
-
-#define REG_F1 xmm1
-#define REG_F2 xmm2
-#define REG_F3 xmm3
-#define REG_F4 xmm4
-#define REG_F5 xmm5
-#define REG_F6 xmm6
-
-#define REG_D1 xmm1
-#define REG_D2 xmm2
-#define REG_D3 xmm3
-#define REG_D4 xmm4
-#define REG_D5 xmm5
-#define REG_D6 xmm6
-
-#define REG_XMM1 xmm1
-#define REG_XMM2 xmm2
-#define REG_XMM3 xmm3
-#define REG_XMM4 xmm4
-#define REG_XMM5 xmm5
-#define REG_XMM6 xmm6
-
-#define REG_YMM1 ymm1
-#define REG_YMM2 ymm2
-#define REG_YMM3 ymm3
-#define REG_YMM4 ymm4
-#define REG_YMM5 ymm5
-#define REG_YMM6 ymm6
-
-#define REG_ZMM1 zmm1
-#define REG_ZMM2 zmm2
-#define REG_ZMM3 zmm3
-#define REG_ZMM4 zmm4
-#define REG_ZMM5 zmm5
-#define REG_ZMM6 zmm6
-
-#if !defined(mingw32_HOST_OS)
-#define CALLER_SAVES_R3
-#define CALLER_SAVES_R4
-#endif
-#define CALLER_SAVES_R5
-#define CALLER_SAVES_R6
-
-#define CALLER_SAVES_F1
-#define CALLER_SAVES_F2
-#define CALLER_SAVES_F3
-#define CALLER_SAVES_F4
-#define CALLER_SAVES_F5
-#if !defined(mingw32_HOST_OS)
-#define CALLER_SAVES_F6
-#endif
-
-#define CALLER_SAVES_D1
-#define CALLER_SAVES_D2
-#define CALLER_SAVES_D3
-#define CALLER_SAVES_D4
-#define CALLER_SAVES_D5
-#if !defined(mingw32_HOST_OS)
-#define CALLER_SAVES_D6
-#endif
-
-#define CALLER_SAVES_XMM1
-#define CALLER_SAVES_XMM2
-#define CALLER_SAVES_XMM3
-#define CALLER_SAVES_XMM4
-#define CALLER_SAVES_XMM5
-#if !defined(mingw32_HOST_OS)
-#define CALLER_SAVES_XMM6
-#endif
-
-#define CALLER_SAVES_YMM1
-#define CALLER_SAVES_YMM2
-#define CALLER_SAVES_YMM3
-#define CALLER_SAVES_YMM4
-#define CALLER_SAVES_YMM5
-#if !defined(mingw32_HOST_OS)
-#define CALLER_SAVES_YMM6
-#endif
-
-#define CALLER_SAVES_ZMM1
-#define CALLER_SAVES_ZMM2
-#define CALLER_SAVES_ZMM3
-#define CALLER_SAVES_ZMM4
-#define CALLER_SAVES_ZMM5
-#if !defined(mingw32_HOST_OS)
-#define CALLER_SAVES_ZMM6
-#endif
-
-#define MAX_REAL_VANILLA_REG 6
-#define MAX_REAL_FLOAT_REG 6
-#define MAX_REAL_DOUBLE_REG 6
-#define MAX_REAL_LONG_REG 0
-#define MAX_REAL_XMM_REG 6
-#define MAX_REAL_YMM_REG 6
-#define MAX_REAL_ZMM_REG 6
-
-/* -----------------------------------------------------------------------------
- The PowerPC register mapping
-
- 0 system glue? (caller-save, volatile)
- 1 SP (callee-save, non-volatile)
- 2 AIX, powerpc64-linux:
- RTOC (a strange special case)
- powerpc32-linux:
- reserved for use by system
+/* Define STG <-> machine register mappings. */
+#if defined(MACHREGS_i386) || defined(MACHREGS_x86_64)
- 3-10 args/return (caller-save, volatile)
- 11,12 system glue? (caller-save, volatile)
- 13 on 64-bit: reserved for thread state pointer
- on 32-bit: (callee-save, non-volatile)
- 14-31 (callee-save, non-volatile)
-
- f0 (caller-save, volatile)
- f1-f13 args/return (caller-save, volatile)
- f14-f31 (callee-save, non-volatile)
-
- \tr{14}--\tr{31} are wonderful callee-save registers on all ppc OSes.
- \tr{0}--\tr{12} are caller-save registers.
-
- \tr{%f14}--\tr{%f31} are callee-save floating-point registers.
-
- We can do the Whole Business with callee-save registers only!
- -------------------------------------------------------------------------- */
+#include "MachRegs/x86.h"
#elif defined(MACHREGS_powerpc)
-#define REG(x) __asm__(#x)
-
-#define REG_R1 r14
-#define REG_R2 r15
-#define REG_R3 r16
-#define REG_R4 r17
-#define REG_R5 r18
-#define REG_R6 r19
-#define REG_R7 r20
-#define REG_R8 r21
-#define REG_R9 r22
-#define REG_R10 r23
-
-#define REG_F1 fr14
-#define REG_F2 fr15
-#define REG_F3 fr16
-#define REG_F4 fr17
-#define REG_F5 fr18
-#define REG_F6 fr19
-
-#define REG_D1 fr20
-#define REG_D2 fr21
-#define REG_D3 fr22
-#define REG_D4 fr23
-#define REG_D5 fr24
-#define REG_D6 fr25
-
-#define REG_Sp r24
-#define REG_SpLim r25
-#define REG_Hp r26
-#define REG_Base r27
-
-#define MAX_REAL_FLOAT_REG 6
-#define MAX_REAL_DOUBLE_REG 6
-
-/* -----------------------------------------------------------------------------
- The ARM EABI register mapping
-
- Here we consider ARM mode (i.e. 32bit isns)
- and also CPU with full VFPv3 implementation
-
- ARM registers (see Chapter 5.1 in ARM IHI 0042D and
- Section 9.2.2 in ARM Software Development Toolkit Reference Guide)
-
- r15 PC The Program Counter.
- r14 LR The Link Register.
- r13 SP The Stack Pointer.
- r12 IP The Intra-Procedure-call scratch register.
- r11 v8/fp Variable-register 8.
- r10 v7/sl Variable-register 7.
- r9 v6/SB/TR Platform register. The meaning of this register is
- defined by the platform standard.
- r8 v5 Variable-register 5.
- r7 v4 Variable register 4.
- r6 v3 Variable register 3.
- r5 v2 Variable register 2.
- r4 v1 Variable register 1.
- r3 a4 Argument / scratch register 4.
- r2 a3 Argument / scratch register 3.
- r1 a2 Argument / result / scratch register 2.
- r0 a1 Argument / result / scratch register 1.
-
- VFPv2/VFPv3/NEON registers
- s0-s15/d0-d7/q0-q3 Argument / result/ scratch registers
- s16-s31/d8-d15/q4-q7 callee-saved registers (must be preserved across
- subroutine calls)
-
- VFPv3/NEON registers (added to the VFPv2 registers set)
- d16-d31/q8-q15 Argument / result/ scratch registers
- ----------------------------------------------------------------------------- */
+#include "MachRegs/ppc.h"
#elif defined(MACHREGS_arm)
-#define REG(x) __asm__(#x)
-
-#define REG_Base r4
-#define REG_Sp r5
-#define REG_Hp r6
-#define REG_R1 r7
-#define REG_R2 r8
-#define REG_R3 r9
-#define REG_R4 r10
-#define REG_SpLim r11
-
-#if !defined(arm_HOST_ARCH_PRE_ARMv6)
-/* d8 */
-#define REG_F1 s16
-#define REG_F2 s17
-/* d9 */
-#define REG_F3 s18
-#define REG_F4 s19
-
-#define REG_D1 d10
-#define REG_D2 d11
-#endif
-
-/* -----------------------------------------------------------------------------
- The ARMv8/AArch64 ABI register mapping
-
- The AArch64 provides 31 64-bit general purpose registers
- and 32 128-bit SIMD/floating point registers.
-
- General purpose registers (see Chapter 5.1.1 in ARM IHI 0055B)
-
- Register | Special | Role in the procedure call standard
- ---------+---------+------------------------------------
- SP | | The Stack Pointer
- r30 | LR | The Link Register
- r29 | FP | The Frame Pointer
- r19-r28 | | Callee-saved registers
- r18 | | The Platform Register, if needed;
- | | or temporary register
- r17 | IP1 | The second intra-procedure-call temporary register
- r16 | IP0 | The first intra-procedure-call scratch register
- r9-r15 | | Temporary registers
- r8 | | Indirect result location register
- r0-r7 | | Parameter/result registers
-
-
- FPU/SIMD registers
-
- s/d/q/v0-v7 Argument / result/ scratch registers
- s/d/q/v8-v15 callee-saved registers (must be preserved across subroutine calls,
- but only bottom 64-bit value needs to be preserved)
- s/d/q/v16-v31 temporary registers
-
- ----------------------------------------------------------------------------- */
+#include "MachRegs/arm32.h"
#elif defined(MACHREGS_aarch64)
-#define REG(x) __asm__(#x)
-
-#define REG_Base r19
-#define REG_Sp r20
-#define REG_Hp r21
-#define REG_R1 r22
-#define REG_R2 r23
-#define REG_R3 r24
-#define REG_R4 r25
-#define REG_R5 r26
-#define REG_R6 r27
-#define REG_SpLim r28
-
-#define REG_F1 s8
-#define REG_F2 s9
-#define REG_F3 s10
-#define REG_F4 s11
-
-#define REG_D1 d12
-#define REG_D2 d13
-#define REG_D3 d14
-#define REG_D4 d15
-
-#define REG_XMM1 q4
-#define REG_XMM2 q5
-
-#define CALLER_SAVES_XMM1
-#define CALLER_SAVES_XMM2
-
-/* -----------------------------------------------------------------------------
- The s390x register mapping
-
- Register | Role(s) | Call effect
- ------------+-------------------------------------+-----------------
- r0,r1 | - | caller-saved
- r2 | Argument / return value | caller-saved
- r3,r4,r5 | Arguments | caller-saved
- r6 | Argument | callee-saved
- r7...r11 | - | callee-saved
- r12 | (Commonly used as GOT pointer) | callee-saved
- r13 | (Commonly used as literal pool pointer) | callee-saved
- r14 | Return address | caller-saved
- r15 | Stack pointer | callee-saved
- f0 | Argument / return value | caller-saved
- f2,f4,f6 | Arguments | caller-saved
- f1,f3,f5,f7 | - | caller-saved
- f8...f15 | - | callee-saved
- v0...v31 | - | caller-saved
-
- Each general purpose register r0 through r15 as well as each floating-point
- register f0 through f15 is 64 bits wide. Each vector register v0 through v31
- is 128 bits wide.
-
- Note, the vector registers v0 through v15 overlap with the floating-point
- registers f0 through f15.
-
- -------------------------------------------------------------------------- */
+#include "MachRegs/arm64.h"
#elif defined(MACHREGS_s390x)
-#define REG(x) __asm__("%" #x)
-
-#define REG_Base r7
-#define REG_Sp r8
-#define REG_Hp r10
-#define REG_R1 r11
-#define REG_R2 r12
-#define REG_R3 r13
-#define REG_R4 r6
-#define REG_R5 r2
-#define REG_R6 r3
-#define REG_R7 r4
-#define REG_R8 r5
-#define REG_SpLim r9
-#define REG_MachSp r15
-
-#define REG_F1 f8
-#define REG_F2 f9
-#define REG_F3 f10
-#define REG_F4 f11
-#define REG_F5 f0
-#define REG_F6 f1
-
-#define REG_D1 f12
-#define REG_D2 f13
-#define REG_D3 f14
-#define REG_D4 f15
-#define REG_D5 f2
-#define REG_D6 f3
-
-#define CALLER_SAVES_R5
-#define CALLER_SAVES_R6
-#define CALLER_SAVES_R7
-#define CALLER_SAVES_R8
-
-#define CALLER_SAVES_F5
-#define CALLER_SAVES_F6
-
-#define CALLER_SAVES_D5
-#define CALLER_SAVES_D6
-
-/* -----------------------------------------------------------------------------
- The riscv64 register mapping
-
- Register | Role(s) | Call effect
- ------------+-----------------------------------------+-------------
- zero | Hard-wired zero | -
- ra | Return address | caller-saved
- sp | Stack pointer | callee-saved
- gp | Global pointer | callee-saved
- tp | Thread pointer | callee-saved
- t0,t1,t2 | - | caller-saved
- s0 | Frame pointer | callee-saved
- s1 | - | callee-saved
- a0,a1 | Arguments / return values | caller-saved
- a2..a7 | Arguments | caller-saved
- s2..s11 | - | callee-saved
- t3..t6 | - | caller-saved
- ft0..ft7 | - | caller-saved
- fs0,fs1 | - | callee-saved
- fa0,fa1 | Arguments / return values | caller-saved
- fa2..fa7 | Arguments | caller-saved
- fs2..fs11 | - | callee-saved
- ft8..ft11 | - | caller-saved
-
- Each general purpose register as well as each floating-point
- register is 64 bits wide.
-
- -------------------------------------------------------------------------- */
+#include "MachRegs/s390x.h"
#elif defined(MACHREGS_riscv64)
-#define REG(x) __asm__(#x)
-
-#define REG_Base s1
-#define REG_Sp s2
-#define REG_Hp s3
-#define REG_R1 s4
-#define REG_R2 s5
-#define REG_R3 s6
-#define REG_R4 s7
-#define REG_R5 s8
-#define REG_R6 s9
-#define REG_R7 s10
-#define REG_SpLim s11
-
-#define REG_F1 fs0
-#define REG_F2 fs1
-#define REG_F3 fs2
-#define REG_F4 fs3
-#define REG_F5 fs4
-#define REG_F6 fs5
-
-#define REG_D1 fs6
-#define REG_D2 fs7
-#define REG_D3 fs8
-#define REG_D4 fs9
-#define REG_D5 fs10
-#define REG_D6 fs11
-
-#define MAX_REAL_FLOAT_REG 6
-#define MAX_REAL_DOUBLE_REG 6
+#include "MachRegs/riscv64.h"
#elif defined(MACHREGS_wasm32)
-#define REG_R1 1
-#define REG_R2 2
-#define REG_R3 3
-#define REG_R4 4
-#define REG_R5 5
-#define REG_R6 6
-#define REG_R7 7
-#define REG_R8 8
-#define REG_R9 9
-#define REG_R10 10
-
-#define REG_F1 11
-#define REG_F2 12
-#define REG_F3 13
-#define REG_F4 14
-#define REG_F5 15
-#define REG_F6 16
-
-#define REG_D1 17
-#define REG_D2 18
-#define REG_D3 19
-#define REG_D4 20
-#define REG_D5 21
-#define REG_D6 22
-
-#define REG_L1 23
-
-#define REG_Sp 24
-#define REG_SpLim 25
-#define REG_Hp 26
-#define REG_HpLim 27
-#define REG_CCCS 28
-
-/* -----------------------------------------------------------------------------
- The loongarch64 register mapping
-
- Register | Role(s) | Call effect
- ------------+-----------------------------------------+-------------
- zero | Hard-wired zero | -
- ra | Return address | caller-saved
- tp | Thread pointer | -
- sp | Stack pointer | callee-saved
- a0,a1 | Arguments / return values | caller-saved
- a2..a7 | Arguments | caller-saved
- t0..t8 | - | caller-saved
- u0 | Reserve | -
- fp | Frame pointer | callee-saved
- s0..s8 | - | callee-saved
- fa0,fa1 | Arguments / return values | caller-saved
- fa2..fa7 | Arguments | caller-saved
- ft0..ft15 | - | caller-saved
- fs0..fs7 | - | callee-saved
-
- Each general purpose register as well as each floating-point
- register is 64 bits wide, also, the u0 register is called r21 in some cases.
+#include "MachRegs/wasm32.h"
- -------------------------------------------------------------------------- */
#elif defined(MACHREGS_loongarch64)
-#define REG(x) __asm__("$" #x)
-
-#define REG_Base s0
-#define REG_Sp s1
-#define REG_Hp s2
-#define REG_R1 s3
-#define REG_R2 s4
-#define REG_R3 s5
-#define REG_R4 s6
-#define REG_R5 s7
-#define REG_SpLim s8
-
-#define REG_F1 fs0
-#define REG_F2 fs1
-#define REG_F3 fs2
-#define REG_F4 fs3
-
-#define REG_D1 fs4
-#define REG_D2 fs5
-#define REG_D3 fs6
-#define REG_D4 fs7
-
-#define MAX_REAL_FLOAT_REG 4
-#define MAX_REAL_DOUBLE_REG 4
+#include "MachRegs/loongarch64.h"
#else
=====================================
rts/include/stg/MachRegs/arm32.h
=====================================
@@ -0,0 +1,60 @@
+#pragma once
+
+/* -----------------------------------------------------------------------------
+ The ARM EABI register mapping
+
+ Here we consider ARM mode (i.e. 32bit isns)
+ and also CPU with full VFPv3 implementation
+
+ ARM registers (see Chapter 5.1 in ARM IHI 0042D and
+ Section 9.2.2 in ARM Software Development Toolkit Reference Guide)
+
+ r15 PC The Program Counter.
+ r14 LR The Link Register.
+ r13 SP The Stack Pointer.
+ r12 IP The Intra-Procedure-call scratch register.
+ r11 v8/fp Variable-register 8.
+ r10 v7/sl Variable-register 7.
+ r9 v6/SB/TR Platform register. The meaning of this register is
+ defined by the platform standard.
+ r8 v5 Variable-register 5.
+ r7 v4 Variable register 4.
+ r6 v3 Variable register 3.
+ r5 v2 Variable register 2.
+ r4 v1 Variable register 1.
+ r3 a4 Argument / scratch register 4.
+ r2 a3 Argument / scratch register 3.
+ r1 a2 Argument / result / scratch register 2.
+ r0 a1 Argument / result / scratch register 1.
+
+ VFPv2/VFPv3/NEON registers
+ s0-s15/d0-d7/q0-q3 Argument / result/ scratch registers
+ s16-s31/d8-d15/q4-q7 callee-saved registers (must be preserved across
+ subroutine calls)
+
+ VFPv3/NEON registers (added to the VFPv2 registers set)
+ d16-d31/q8-q15 Argument / result/ scratch registers
+ ----------------------------------------------------------------------------- */
+
+#define REG(x) __asm__(#x)
+
+#define REG_Base r4
+#define REG_Sp r5
+#define REG_Hp r6
+#define REG_R1 r7
+#define REG_R2 r8
+#define REG_R3 r9
+#define REG_R4 r10
+#define REG_SpLim r11
+
+#if !defined(arm_HOST_ARCH_PRE_ARMv6)
+/* d8 */
+#define REG_F1 s16
+#define REG_F2 s17
+/* d9 */
+#define REG_F3 s18
+#define REG_F4 s19
+
+#define REG_D1 d10
+#define REG_D2 d11
+#endif
\ No newline at end of file
=====================================
rts/include/stg/MachRegs/arm64.h
=====================================
@@ -0,0 +1,64 @@
+#pragma once
+
+
+/* -----------------------------------------------------------------------------
+ The ARMv8/AArch64 ABI register mapping
+
+ The AArch64 provides 31 64-bit general purpose registers
+ and 32 128-bit SIMD/floating point registers.
+
+ General purpose registers (see Chapter 5.1.1 in ARM IHI 0055B)
+
+ Register | Special | Role in the procedure call standard
+ ---------+---------+------------------------------------
+ SP | | The Stack Pointer
+ r30 | LR | The Link Register
+ r29 | FP | The Frame Pointer
+ r19-r28 | | Callee-saved registers
+ r18 | | The Platform Register, if needed;
+ | | or temporary register
+ r17 | IP1 | The second intra-procedure-call temporary register
+ r16 | IP0 | The first intra-procedure-call scratch register
+ r9-r15 | | Temporary registers
+ r8 | | Indirect result location register
+ r0-r7 | | Parameter/result registers
+
+
+ FPU/SIMD registers
+
+ s/d/q/v0-v7 Argument / result/ scratch registers
+ s/d/q/v8-v15 callee-saved registers (must be preserved across subroutine calls,
+ but only bottom 64-bit value needs to be preserved)
+ s/d/q/v16-v31 temporary registers
+
+ ----------------------------------------------------------------------------- */
+
+#define REG(x) __asm__(#x)
+
+#define REG_Base r19
+#define REG_Sp r20
+#define REG_Hp r21
+#define REG_R1 r22
+#define REG_R2 r23
+#define REG_R3 r24
+#define REG_R4 r25
+#define REG_R5 r26
+#define REG_R6 r27
+#define REG_SpLim r28
+
+#define REG_F1 s8
+#define REG_F2 s9
+#define REG_F3 s10
+#define REG_F4 s11
+
+#define REG_D1 d12
+#define REG_D2 d13
+#define REG_D3 d14
+#define REG_D4 d15
+
+#define REG_XMM1 q4
+#define REG_XMM2 q5
+
+#define CALLER_SAVES_XMM1
+#define CALLER_SAVES_XMM2
+
=====================================
rts/include/stg/MachRegs/loongarch64.h
=====================================
@@ -0,0 +1,51 @@
+#pragma once
+
+/* -----------------------------------------------------------------------------
+ The loongarch64 register mapping
+
+ Register | Role(s) | Call effect
+ ------------+-----------------------------------------+-------------
+ zero | Hard-wired zero | -
+ ra | Return address | caller-saved
+ tp | Thread pointer | -
+ sp | Stack pointer | callee-saved
+ a0,a1 | Arguments / return values | caller-saved
+ a2..a7 | Arguments | caller-saved
+ t0..t8 | - | caller-saved
+ u0 | Reserve | -
+ fp | Frame pointer | callee-saved
+ s0..s8 | - | callee-saved
+ fa0,fa1 | Arguments / return values | caller-saved
+ fa2..fa7 | Arguments | caller-saved
+ ft0..ft15 | - | caller-saved
+ fs0..fs7 | - | callee-saved
+
+ Each general purpose register as well as each floating-point
+ register is 64 bits wide, also, the u0 register is called r21 in some cases.
+
+ -------------------------------------------------------------------------- */
+
+#define REG(x) __asm__("$" #x)
+
+#define REG_Base s0
+#define REG_Sp s1
+#define REG_Hp s2
+#define REG_R1 s3
+#define REG_R2 s4
+#define REG_R3 s5
+#define REG_R4 s6
+#define REG_R5 s7
+#define REG_SpLim s8
+
+#define REG_F1 fs0
+#define REG_F2 fs1
+#define REG_F3 fs2
+#define REG_F4 fs3
+
+#define REG_D1 fs4
+#define REG_D2 fs5
+#define REG_D3 fs6
+#define REG_D4 fs7
+
+#define MAX_REAL_FLOAT_REG 4
+#define MAX_REAL_DOUBLE_REG 4
=====================================
rts/include/stg/MachRegs/ppc.h
=====================================
@@ -0,0 +1,65 @@
+#pragma once
+
+/* -----------------------------------------------------------------------------
+ The PowerPC register mapping
+
+ 0 system glue? (caller-save, volatile)
+ 1 SP (callee-save, non-volatile)
+ 2 AIX, powerpc64-linux:
+ RTOC (a strange special case)
+ powerpc32-linux:
+ reserved for use by system
+
+ 3-10 args/return (caller-save, volatile)
+ 11,12 system glue? (caller-save, volatile)
+ 13 on 64-bit: reserved for thread state pointer
+ on 32-bit: (callee-save, non-volatile)
+ 14-31 (callee-save, non-volatile)
+
+ f0 (caller-save, volatile)
+ f1-f13 args/return (caller-save, volatile)
+ f14-f31 (callee-save, non-volatile)
+
+ \tr{14}--\tr{31} are wonderful callee-save registers on all ppc OSes.
+ \tr{0}--\tr{12} are caller-save registers.
+
+ \tr{%f14}--\tr{%f31} are callee-save floating-point registers.
+
+ We can do the Whole Business with callee-save registers only!
+ -------------------------------------------------------------------------- */
+
+
+#define REG(x) __asm__(#x)
+
+#define REG_R1 r14
+#define REG_R2 r15
+#define REG_R3 r16
+#define REG_R4 r17
+#define REG_R5 r18
+#define REG_R6 r19
+#define REG_R7 r20
+#define REG_R8 r21
+#define REG_R9 r22
+#define REG_R10 r23
+
+#define REG_F1 fr14
+#define REG_F2 fr15
+#define REG_F3 fr16
+#define REG_F4 fr17
+#define REG_F5 fr18
+#define REG_F6 fr19
+
+#define REG_D1 fr20
+#define REG_D2 fr21
+#define REG_D3 fr22
+#define REG_D4 fr23
+#define REG_D5 fr24
+#define REG_D6 fr25
+
+#define REG_Sp r24
+#define REG_SpLim r25
+#define REG_Hp r26
+#define REG_Base r27
+
+#define MAX_REAL_FLOAT_REG 6
+#define MAX_REAL_DOUBLE_REG 6
\ No newline at end of file
=====================================
rts/include/stg/MachRegs/riscv64.h
=====================================
@@ -0,0 +1,61 @@
+#pragma once
+
+/* -----------------------------------------------------------------------------
+ The riscv64 register mapping
+
+ Register | Role(s) | Call effect
+ ------------+-----------------------------------------+-------------
+ zero | Hard-wired zero | -
+ ra | Return address | caller-saved
+ sp | Stack pointer | callee-saved
+ gp | Global pointer | callee-saved
+ tp | Thread pointer | callee-saved
+ t0,t1,t2 | - | caller-saved
+ s0 | Frame pointer | callee-saved
+ s1 | - | callee-saved
+ a0,a1 | Arguments / return values | caller-saved
+ a2..a7 | Arguments | caller-saved
+ s2..s11 | - | callee-saved
+ t3..t6 | - | caller-saved
+ ft0..ft7 | - | caller-saved
+ fs0,fs1 | - | callee-saved
+ fa0,fa1 | Arguments / return values | caller-saved
+ fa2..fa7 | Arguments | caller-saved
+ fs2..fs11 | - | callee-saved
+ ft8..ft11 | - | caller-saved
+
+ Each general purpose register as well as each floating-point
+ register is 64 bits wide.
+
+ -------------------------------------------------------------------------- */
+
+#define REG(x) __asm__(#x)
+
+#define REG_Base s1
+#define REG_Sp s2
+#define REG_Hp s3
+#define REG_R1 s4
+#define REG_R2 s5
+#define REG_R3 s6
+#define REG_R4 s7
+#define REG_R5 s8
+#define REG_R6 s9
+#define REG_R7 s10
+#define REG_SpLim s11
+
+#define REG_F1 fs0
+#define REG_F2 fs1
+#define REG_F3 fs2
+#define REG_F4 fs3
+#define REG_F5 fs4
+#define REG_F6 fs5
+
+#define REG_D1 fs6
+#define REG_D2 fs7
+#define REG_D3 fs8
+#define REG_D4 fs9
+#define REG_D5 fs10
+#define REG_D6 fs11
+
+#define MAX_REAL_FLOAT_REG 6
+#define MAX_REAL_DOUBLE_REG 6
\ No newline at end of file
=====================================
rts/include/stg/MachRegs/s390x.h
=====================================
@@ -0,0 +1,72 @@
+#pragma once
+
+/* -----------------------------------------------------------------------------
+ The s390x register mapping
+
+ Register | Role(s) | Call effect
+ ------------+-------------------------------------+-----------------
+ r0,r1 | - | caller-saved
+ r2 | Argument / return value | caller-saved
+ r3,r4,r5 | Arguments | caller-saved
+ r6 | Argument | callee-saved
+ r7...r11 | - | callee-saved
+ r12 | (Commonly used as GOT pointer) | callee-saved
+ r13 | (Commonly used as literal pool pointer) | callee-saved
+ r14 | Return address | caller-saved
+ r15 | Stack pointer | callee-saved
+ f0 | Argument / return value | caller-saved
+ f2,f4,f6 | Arguments | caller-saved
+ f1,f3,f5,f7 | - | caller-saved
+ f8...f15 | - | callee-saved
+ v0...v31 | - | caller-saved
+
+ Each general purpose register r0 through r15 as well as each floating-point
+ register f0 through f15 is 64 bits wide. Each vector register v0 through v31
+ is 128 bits wide.
+
+ Note, the vector registers v0 through v15 overlap with the floating-point
+ registers f0 through f15.
+
+ -------------------------------------------------------------------------- */
+
+
+#define REG(x) __asm__("%" #x)
+
+#define REG_Base r7
+#define REG_Sp r8
+#define REG_Hp r10
+#define REG_R1 r11
+#define REG_R2 r12
+#define REG_R3 r13
+#define REG_R4 r6
+#define REG_R5 r2
+#define REG_R6 r3
+#define REG_R7 r4
+#define REG_R8 r5
+#define REG_SpLim r9
+#define REG_MachSp r15
+
+#define REG_F1 f8
+#define REG_F2 f9
+#define REG_F3 f10
+#define REG_F4 f11
+#define REG_F5 f0
+#define REG_F6 f1
+
+#define REG_D1 f12
+#define REG_D2 f13
+#define REG_D3 f14
+#define REG_D4 f15
+#define REG_D5 f2
+#define REG_D6 f3
+
+#define CALLER_SAVES_R5
+#define CALLER_SAVES_R6
+#define CALLER_SAVES_R7
+#define CALLER_SAVES_R8
+
+#define CALLER_SAVES_F5
+#define CALLER_SAVES_F6
+
+#define CALLER_SAVES_D5
+#define CALLER_SAVES_D6
\ No newline at end of file
=====================================
rts/include/stg/MachRegs/wasm32.h
=====================================
=====================================
rts/include/stg/MachRegs/x86.h
=====================================
@@ -0,0 +1,210 @@
+/* -----------------------------------------------------------------------------
+ The x86 register mapping
+
+ Ok, we've only got 6 general purpose registers, a frame pointer and a
+ stack pointer. \tr{%eax} and \tr{%edx} are return values from C functions,
+ hence they get trashed across ccalls and are caller saves. \tr{%ebx},
+ \tr{%esi}, \tr{%edi}, \tr{%ebp} are all callee-saves.
+
+ Reg STG-Reg
+ ---------------
+ ebx Base
+ ebp Sp
+ esi R1
+ edi Hp
+
+ Leaving SpLim out of the picture.
+ -------------------------------------------------------------------------- */
+
+#if defined(MACHREGS_i386)
+
+#define REG(x) __asm__("%" #x)
+
+#if !defined(not_doing_dynamic_linking)
+#define REG_Base ebx
+#endif
+#define REG_Sp ebp
+
+#if !defined(STOLEN_X86_REGS)
+#define STOLEN_X86_REGS 4
+#endif
+
+#if STOLEN_X86_REGS >= 3
+# define REG_R1 esi
+#endif
+
+#if STOLEN_X86_REGS >= 4
+# define REG_Hp edi
+#endif
+#define REG_MachSp esp
+
+#define REG_XMM1 xmm0
+#define REG_XMM2 xmm1
+#define REG_XMM3 xmm2
+#define REG_XMM4 xmm3
+
+#define REG_YMM1 ymm0
+#define REG_YMM2 ymm1
+#define REG_YMM3 ymm2
+#define REG_YMM4 ymm3
+
+#define REG_ZMM1 zmm0
+#define REG_ZMM2 zmm1
+#define REG_ZMM3 zmm2
+#define REG_ZMM4 zmm3
+
+#define MAX_REAL_VANILLA_REG 1 /* always, since it defines the entry conv */
+#define MAX_REAL_FLOAT_REG 0
+#define MAX_REAL_DOUBLE_REG 0
+#define MAX_REAL_LONG_REG 0
+#define MAX_REAL_XMM_REG 4
+#define MAX_REAL_YMM_REG 4
+#define MAX_REAL_ZMM_REG 4
+
+/* -----------------------------------------------------------------------------
+ The x86-64 register mapping
+
+ %rax caller-saves, don't steal this one
+ %rbx YES
+ %rcx arg reg, caller-saves
+ %rdx arg reg, caller-saves
+ %rsi arg reg, caller-saves
+ %rdi arg reg, caller-saves
+ %rbp YES (our *prime* register)
+ %rsp (unavailable - stack pointer)
+ %r8 arg reg, caller-saves
+ %r9 arg reg, caller-saves
+ %r10 caller-saves
+ %r11 caller-saves
+ %r12 YES
+ %r13 YES
+ %r14 YES
+ %r15 YES
+
+ %xmm0-7 arg regs, caller-saves
+ %xmm8-15 caller-saves
+
+ Use the caller-saves regs for Rn, because we don't always have to
+ save those (as opposed to Sp/Hp/SpLim etc. which always have to be
+ saved).
+
+ --------------------------------------------------------------------------- */
+
+#elif defined(MACHREGS_x86_64)
+
+#define REG(x) __asm__("%" #x)
+
+#define REG_Base r13
+#define REG_Sp rbp
+#define REG_Hp r12
+#define REG_R1 rbx
+#define REG_R2 r14
+#define REG_R3 rsi
+#define REG_R4 rdi
+#define REG_R5 r8
+#define REG_R6 r9
+#define REG_SpLim r15
+#define REG_MachSp rsp
+
+/*
+Map both Fn and Dn to register xmmn so that we can pass a function any
+combination of up to six Float# or Double# arguments without touching
+the stack. See Note [Overlapping global registers] for implications.
+*/
+
+#define REG_F1 xmm1
+#define REG_F2 xmm2
+#define REG_F3 xmm3
+#define REG_F4 xmm4
+#define REG_F5 xmm5
+#define REG_F6 xmm6
+
+#define REG_D1 xmm1
+#define REG_D2 xmm2
+#define REG_D3 xmm3
+#define REG_D4 xmm4
+#define REG_D5 xmm5
+#define REG_D6 xmm6
+
+#define REG_XMM1 xmm1
+#define REG_XMM2 xmm2
+#define REG_XMM3 xmm3
+#define REG_XMM4 xmm4
+#define REG_XMM5 xmm5
+#define REG_XMM6 xmm6
+
+#define REG_YMM1 ymm1
+#define REG_YMM2 ymm2
+#define REG_YMM3 ymm3
+#define REG_YMM4 ymm4
+#define REG_YMM5 ymm5
+#define REG_YMM6 ymm6
+
+#define REG_ZMM1 zmm1
+#define REG_ZMM2 zmm2
+#define REG_ZMM3 zmm3
+#define REG_ZMM4 zmm4
+#define REG_ZMM5 zmm5
+#define REG_ZMM6 zmm6
+
+#if !defined(mingw32_HOST_OS)
+#define CALLER_SAVES_R3
+#define CALLER_SAVES_R4
+#endif
+#define CALLER_SAVES_R5
+#define CALLER_SAVES_R6
+
+#define CALLER_SAVES_F1
+#define CALLER_SAVES_F2
+#define CALLER_SAVES_F3
+#define CALLER_SAVES_F4
+#define CALLER_SAVES_F5
+#if !defined(mingw32_HOST_OS)
+#define CALLER_SAVES_F6
+#endif
+
+#define CALLER_SAVES_D1
+#define CALLER_SAVES_D2
+#define CALLER_SAVES_D3
+#define CALLER_SAVES_D4
+#define CALLER_SAVES_D5
+#if !defined(mingw32_HOST_OS)
+#define CALLER_SAVES_D6
+#endif
+
+#define CALLER_SAVES_XMM1
+#define CALLER_SAVES_XMM2
+#define CALLER_SAVES_XMM3
+#define CALLER_SAVES_XMM4
+#define CALLER_SAVES_XMM5
+#if !defined(mingw32_HOST_OS)
+#define CALLER_SAVES_XMM6
+#endif
+
+#define CALLER_SAVES_YMM1
+#define CALLER_SAVES_YMM2
+#define CALLER_SAVES_YMM3
+#define CALLER_SAVES_YMM4
+#define CALLER_SAVES_YMM5
+#if !defined(mingw32_HOST_OS)
+#define CALLER_SAVES_YMM6
+#endif
+
+#define CALLER_SAVES_ZMM1
+#define CALLER_SAVES_ZMM2
+#define CALLER_SAVES_ZMM3
+#define CALLER_SAVES_ZMM4
+#define CALLER_SAVES_ZMM5
+#if !defined(mingw32_HOST_OS)
+#define CALLER_SAVES_ZMM6
+#endif
+
+#define MAX_REAL_VANILLA_REG 6
+#define MAX_REAL_FLOAT_REG 6
+#define MAX_REAL_DOUBLE_REG 6
+#define MAX_REAL_LONG_REG 0
+#define MAX_REAL_XMM_REG 6
+#define MAX_REAL_YMM_REG 6
+#define MAX_REAL_ZMM_REG 6
+
+#endif /* MACHREGS_i386 || MACHREGS_x86_64 */
\ No newline at end of file
=====================================
rts/rts.cabal.in
=====================================
@@ -123,6 +123,14 @@ library
ghcautoconf.h ghcconfig.h ghcplatform.h ghcversion.h
DerivedConstants.h
stg/MachRegs.h
+ stg/MachRegs/arm32.h
+ stg/MachRegs/arm64.h
+ stg/MachRegs/loongarch64.h
+ stg/MachRegs/ppc.h
+ stg/MachRegs/riscv64.h
+ stg/MachRegs/s390x.h
+ stg/MachRegs/wasm32.h
+ stg/MachRegs/x86.h
stg/MachRegsForHost.h
stg/Types.h
@@ -293,6 +301,14 @@ library
rts/storage/TSO.h
stg/DLL.h
stg/MachRegs.h
+ stg/MachRegs/arm32.h
+ stg/MachRegs/arm64.h
+ stg/MachRegs/loongarch64.h
+ stg/MachRegs/ppc.h
+ stg/MachRegs/riscv64.h
+ stg/MachRegs/s390x.h
+ stg/MachRegs/wasm32.h
+ stg/MachRegs/x86.h
stg/MachRegsForHost.h
stg/MiscClosures.h
stg/Prim.h
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/3609031c374ca017cf63334ec495f6b42c915827
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/3609031c374ca017cf63334ec495f6b42c915827
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