mirror of
https://github.com/ClassiCube/ClassiCube.git
synced 2025-09-12 09:06:55 -04:00
Dreamcast: Tidy up the assembly a bit
This commit is contained in:
UnknownShadow200
parent
7f37bb8ddc
commit
e6d19d7ca1
2
.github/workflows/build_mac32.yml
vendored
2
.github/workflows/build_mac32.yml
vendored
@ -13,7 +13,7 @@ concurrency:
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jobs:
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jobs:
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build:
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build:
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if: ${{ inputs.WEBHOOK_URL != '' }}
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if: ${{ secrets.GHCR_ACCESS_KEY != '' }}
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runs-on: ubuntu-latest
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runs-on: ubuntu-latest
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container:
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container:
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image: ghcr.io/classicube/minimal-osxcross:latest
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image: ghcr.io/classicube/minimal-osxcross:latest
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@ -1,27 +1,3 @@
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!r0 = clip flags
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!r1 = GPU command
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!r2 = temp
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!r3 = prefetch address
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!r4 = src pointer ARG
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!r5 = dst pointer ARG
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!r6 = quads count ARG
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!r7 = ?
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!fr0 = temp
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!fr1 = u (0.0)
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!fr2 = v (0.0)
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!fr3 = c
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!fr4 = x
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!fr5 = y
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!fr6 = z
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!fr7 = w
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!fr8 = VIEWPORT_HWIDTH
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!fr9 = VIEWPORT_HHEIGHT
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!fr10 = VIEWPORT_X_PLUS_HWIDTH
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!fr11 = VIEWPORT_Y_PLUS_HHEIGHT
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!fv4 = XYZW
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#include "ViewportTransform.S"
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#include "ViewportTransform.S"
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.global _DrawColouredQuads
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.global _DrawColouredQuads
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.align 4
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.align 4
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@ -1,27 +1,3 @@
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!r0 = clip flags
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!r1 = GPU command
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!r2 = temp
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!r3 = prefetch address
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!r4 = src pointer ARG
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!r5 = dst pointer ARG
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!r6 = quads count ARG
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!r7 = ?
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!fr0 = temp
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!fr1 = u
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!fr2 = v
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!fr3 = c
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!fr4 = x
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!fr5 = y
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!fr6 = z
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!fr7 = w
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!fr8 = VIEWPORT_HWIDTH
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!fr9 = VIEWPORT_HHEIGHT
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!fr10 = VIEWPORT_X_PLUS_HWIDTH
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!fr11 = VIEWPORT_Y_PLUS_HHEIGHT
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!fv4 = XYZW
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#include "ViewportTransform.S"
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#include "ViewportTransform.S"
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.global _DrawTexturedQuads
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.global _DrawTexturedQuads
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.align 4
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.align 4
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@ -1,108 +1,170 @@
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! =========================================================
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! ======================== PROCESSOR INFO =================
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! =========================================================
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! The SH4 can dual issue (i.e. parallel execution) instructions
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! as long as the groups of the two instructions are different:
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! * LS - most APU and FPU register load/stores
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! * EX - most APU arithmetic instructions
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! * MT - TST, CMP, NOP, MOV Rm,Rn
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! * FE - most FPU arithmetic instructions
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! * CO - other instructions
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! Thee following general aspects of instructions are important to note per the SH4 manual:
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! * Issue rate: Interval between the issue of an instruction and that of the next instruction
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! * Latency: Interval between the issue of an instruction and the generation of its result (completion)
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! * Latency is also the interval between the execution of two instructions with an interdependent relationship.
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! (although different cases may either increase or decrease Latency)
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!
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! The instructions have the following latencies
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! * FADD.S/FMUL.S/FSUB.S/FMAC.S - 3/4
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! * FTRV - 5/8
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! * SHL/SHR - 1
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! * ADD/SUB/OR/XOR - 1
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! =========================================================
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! ======================== REGISTER USAGES ================
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! =========================================================
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! SH4 C ABI:
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! - R0 to R3 are return values (can be overwritten)
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! - R4 to R7 are input arguments (can be overwritten)
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! - R8 to R13 are non-volatile (must be restored at end)
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! - R14 is the frame pointer (must be restored at end)
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! - R15 is the stack pointer (must be restored at end)
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! - FR0 to FR3 are return values (can be overwritten)
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! - FR4 to FR11 are input arguments (can be overwritten)
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! - FR12 to FR13 are non-volatile (must be restored at end)
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!r0 = clip flags
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!r1 = GPU command
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!r2 = temp
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!r3 = prefetch address
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!r4 = src pointer ARG
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!r5 = dst pointer ARG
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!r6 = quads count ARG
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!r7 = ?
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!fr0 = temp
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!fr1 = u
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!fr2 = v
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!fr3 = c
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!fr4 = x
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!fr5 = y
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!fr6 = z
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!fr7 = w
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!fr8 = VIEWPORT_HWIDTH
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!fr9 = VIEWPORT_HHEIGHT
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!fr10 = VIEWPORT_X_PLUS_HWIDTH
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!fr11 = VIEWPORT_Y_PLUS_HHEIGHT
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!fv4 = XYZW
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! =========================================================
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! =========================================================
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! ========================= VERTEX LOADING ================
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! ========================= VERTEX LOADING ================
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! =========================================================
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! =========================================================
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.macro LoadColouredVertex
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.macro LoadColouredVertex
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! PREPARE NEXT VERTEX
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! PREPARE NEXT VERTEX
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add #16, r3 ! r3 += VERTEX_STRIDE
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add #16, r3 ! EX, r3 += VERTEX_STRIDE
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pref @r3 ! PREFETCH r3 (next vertex)
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pref @r3 ! LS, PREFETCH r3 (next vertex)
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add #64, r5 ! r5 += 2 * sizeof(VERTEX)
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add #64, r5 ! EX, r5 += 2 * sizeof(VERTEX)
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! LOAD XYZ
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! LOAD XYZ
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fmov @r4+, fr4 ! X = src->x
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fmov @r4+, fr4 ! LS, X = src->x
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fmov @r4+, fr5 ! Y = src->y
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fmov @r4+, fr5 ! LS, Y = src->y
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fmov @r4+, fr6 ! Z = src->z
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fmov @r4+, fr6 ! LS, Z = src->z
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fldi1 fr7 ! W = 1.0
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fldi1 fr7 ! LS, W = 1.0
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! TRANSFORM VERTEX
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! TRANSFORM VERTEX
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ftrv xmtrx, fv4 ! TRANSFORM(XYZW)
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ftrv xmtrx, fv4 ! FE, TRANSFORM(XYZW)
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! LOAD ATTRIBUTES
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! LOAD ATTRIBUTES
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fmov @r4+,fr3 ! C = src->color
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fmov @r4+,fr3 ! LS, C = src->color
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.endm
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.endm
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.macro LoadTexturedVertex
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.macro LoadTexturedVertex
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! PREPARE NEXT VERTEX
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! PREPARE NEXT VERTEX
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add #24, r3 ! r3 += VERTEX_STRIDE
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add #24, r3 ! EX, r3 += VERTEX_STRIDE
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pref @r3 ! PREFETCH r3 (next vertex)
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pref @r3 ! LS, PREFETCH r3 (next vertex)
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add #64, r5 ! r5 += 2 * sizeof(VERTEX)
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add #64, r5 ! EX, r5 += 2 * sizeof(VERTEX)
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! LOAD XYZ
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! LOAD XYZ
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fmov @r4+, fr4 ! X = src->x
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fmov @r4+, fr4 ! LS, X = src->x
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fmov @r4+, fr5 ! Y = src->y
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fmov @r4+, fr5 ! LS, Y = src->y
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fmov @r4+, fr6 ! Z = src->z
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fmov @r4+, fr6 ! LS, Z = src->z
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fldi1 fr7 ! W = 1.0
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fldi1 fr7 ! LS, W = 1.0
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! TRANSFORM VERTEX
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! TRANSFORM VERTEX
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ftrv xmtrx, fv4 ! TRANSFORM(XYZW)
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ftrv xmtrx, fv4 ! FE, TRANSFORM(XYZW)
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! LOAD ATTRIBUTES
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! LOAD ATTRIBUTES
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fmov @r4+,fr3 ! C = src->color
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fmov @r4+,fr3 ! LS, C = src->color
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fmov @r4+,fr1 ! U = src->u
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fmov @r4+,fr1 ! LS, U = src->u
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fmov @r4+,fr2 ! V = src->v
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fmov @r4+,fr2 ! LS, V = src->v
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.endm
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.endm
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! =========================================================
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! =========================================================
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! ========================= VERTEX OUTPUT =================
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! ========================= VERTEX OUTPUT =================
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! =========================================================
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! =========================================================
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! To take advantage of SH4 dual instruction processing, interleave
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! To take advantage of SH4 dual instruction processing,
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! the clipflag calculation and vertex output instructions
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! clipflag calculation and vertex output are interleaved
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.macro ProcessVertex1
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.macro ProcessVertex1
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fmov.s fr7,@-r5 ! dst->w = W
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fmov.s fr7,@-r5 ! LS, dst->w = W
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fmov.s fr3,@-r5 ! dst->c = C
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fmov.s fr3,@-r5 ! LS, dst->c = C
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fneg fr7 ! W = -W
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fneg fr7 ! LS, W = -W
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fmov.s fr2,@-r5 ! dst->v = V
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fmov.s fr2,@-r5 ! LS, dst->v = V
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fcmp/gt fr7,fr6 ! T = Z > W (i.e. Z > -W)
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fcmp/gt fr7,fr6 ! CO, T = Z > W (i.e. Z > -W)
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fmov.s fr1,@-r5 ! dst->u = U
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fmov.s fr1,@-r5 ! LS, dst->u = U
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movt r0 ! CLIPFLAGS = T
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movt r0 ! EX, CLIPFLAGS = T
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fmov.s fr6,@-r5 ! dst->z = Z
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fmov.s fr6,@-r5 ! LS, dst->z = Z
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fmov.s fr5,@-r5 ! dst->y = Y
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fmov.s fr5,@-r5 ! LS, dst->y = Y
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fmov.s fr4,@-r5 ! dst->x = X
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fmov.s fr4,@-r5 ! LS, dst->x = X
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mov.l r1,@-r5 ! dst->flags = CMD_VERT
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mov.l r1,@-r5 ! LS, dst->flags = CMD_VERT
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.endm
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.endm
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.macro ProcessVertex2
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.macro ProcessVertex2
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fmov.s fr7,@-r5 ! dst->w = W
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fmov.s fr7,@-r5 ! LS, dst->w = W
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fmov.s fr3,@-r5 ! dst->c = C
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fmov.s fr3,@-r5 ! LS, dst->c = C
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fneg fr7 ! W = -W
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fneg fr7 ! LS, W = -W
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fmov.s fr2,@-r5 ! dst->v = V
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fmov.s fr2,@-r5 ! LS, dst->v = V
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fcmp/gt fr7,fr6 ! T = Z > W (i.e. Z > -W)
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fcmp/gt fr7,fr6 ! CO, T = Z > W (i.e. Z > -W)
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fmov.s fr1,@-r5 ! dst->u = U
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fmov.s fr1,@-r5 ! LS, dst->u = U
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movt r2 ! tmp = T
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movt r2 ! EX, tmp = T
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fmov.s fr6,@-r5 ! dst->z = Z
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fmov.s fr6,@-r5 ! LS, dst->z = Z
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add r2,r2 ! tmp = tmp + tmp
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add r2,r2 ! EX, tmp = tmp + tmp
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fmov.s fr5,@-r5 ! dst->y = Y
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fmov.s fr5,@-r5 ! LS, dst->y = Y
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or r2,r0 ! CLIPFLAGS |= tmp (T << 1)
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or r2,r0 ! EX, CLIPFLAGS |= tmp (T << 1)
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fmov.s fr4,@-r5 ! dst->x = X
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fmov.s fr4,@-r5 ! LS, dst->x = X
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mov.l r1,@-r5 ! dst->flags = CMD_VERT
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mov.l r1,@-r5 ! LS, dst->flags = CMD_VERT
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.endm
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.endm
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.macro ProcessVertex3
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.macro ProcessVertex3
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fmov.s fr7,@-r5 ! dst->w = W
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fmov.s fr7,@-r5 ! LS, dst->w = W
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fmov.s fr3,@-r5 ! dst->c = C
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fmov.s fr3,@-r5 ! LS, dst->c = C
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fneg fr7 ! W = -W
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fneg fr7 ! LS, W = -W
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fmov.s fr2,@-r5 ! dst->v = V
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fmov.s fr2,@-r5 ! LS, dst->v = V
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fcmp/gt fr7,fr6 ! T = Z > W (i.e. Z > -W)
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fcmp/gt fr7,fr6 ! CO, T = Z > W (i.e. Z > -W)
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fmov.s fr1,@-r5 ! dst->u = U
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fmov.s fr1,@-r5 ! LS, dst->u = U
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movt r2 ! tmp = T
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movt r2 ! EX, tmp = T
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fmov.s fr6,@-r5 ! dst->z = Z
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fmov.s fr6,@-r5 ! LS, dst->z = Z
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fmov.s fr5,@-r5 ! dst->y = Y
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fmov.s fr5,@-r5 ! LS, dst->y = Y
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shll2 r2 ! tmp = tmp << 2
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shll2 r2 ! EX, tmp = tmp << 2
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fmov.s fr4,@-r5 ! dst->x = X
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fmov.s fr4,@-r5 ! LS, dst->x = X
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or r2,r0 ! CLIPFLAGS |= tmp (T << 2)
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or r2,r0 ! EX, CLIPFLAGS |= tmp (T << 2)
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mov.l r1,@-r5 ! dst->flags = CMD_VERT
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mov.l r1,@-r5 ! LS, dst->flags = CMD_VERT
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.endm
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.endm
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.macro ProcessVertex4 eos_addr
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.macro ProcessVertex4 eos_addr
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fmov.s fr7,@-r5 ! dst->w = W
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fmov.s fr7,@-r5 ! LS, dst->w = W
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fmov.s fr3,@-r5 ! dst->c = C
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fmov.s fr3,@-r5 ! LS, dst->c = C
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fneg fr7 ! W = -W
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fneg fr7 ! LS, W = -W
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fmov.s fr2,@-r5 ! dst->v = V
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fmov.s fr2,@-r5 ! LS, dst->v = V
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fcmp/gt fr7,fr6 ! T = Z > W (i.e. Z > -W)
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fcmp/gt fr7,fr6 ! CO, T = Z > W (i.e. Z > -W)
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fmov.s fr1,@-r5 ! dst->u = U
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fmov.s fr1,@-r5 ! LS, dst->u = U
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movt r2 ! tmp = T
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movt r2 ! EX, tmp = T
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fmov.s fr6,@-r5 ! dst->z = Z
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fmov.s fr6,@-r5 ! LS, dst->z = Z
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shll2 r2 ! tmp = tmp << 2
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shll2 r2 ! EX, tmp = tmp << 2
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fmov.s fr5,@-r5 ! dst->y = Y
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fmov.s fr5,@-r5 ! LS, dst->y = Y
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add r2,r2 ! tmp = (tmp << 2) + (tmp << 2)
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add r2,r2 ! EX, tmp = (tmp << 2) + (tmp << 2)
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fmov.s fr4,@-r5 ! dst->x = X
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fmov.s fr4,@-r5 ! LS, dst->x = X
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mov.l \eos_addr, r1 ! r1 = GPU EOS command
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mov.l \eos_addr, r1 ! LS, r1 = GPU EOS command
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or r2,r0 ! CLIPFLAGS |= tmp (T << 3)
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or r2,r0 ! EX, CLIPFLAGS |= tmp (T << 3)
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or r0,r1 ! r1 |= CLIPFLAGS
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or r0,r1 ! EX, r1 |= CLIPFLAGS
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mov.l r1,@-r5 ! dst->flags = GPU EOS | CLIPFLAGS
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mov.l r1,@-r5 ! LS, dst->flags = GPU EOS | CLIPFLAGS
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.endm
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.endm
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@ -123,39 +185,39 @@
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!fr11 = VIEWPORT_Y_PLUS_HHEIGHT
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!fr11 = VIEWPORT_Y_PLUS_HHEIGHT
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.macro ViewportTransformSetup viewport_addr
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.macro ViewportTransformSetup viewport_addr
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mova \viewport_addr, r0
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mova \viewport_addr, r0 ! EX, r0 = &VIEWPORT
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fmov.s @r0+,fr8 ! fr8 = VIEWPORT_HWIDTH
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fmov.s @r0+,fr8 ! LS, fr8 = VIEWPORT_HWIDTH
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fmov.s @r0+,fr9 ! fr9 = VIEWPORT_HHEIGHT
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fmov.s @r0+,fr9 ! LS, fr9 = VIEWPORT_HHEIGHT
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fmov.s @r0+,fr10 ! fr10 = VIEWPORT_X_PLUS_HWIDTH
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fmov.s @r0+,fr10 ! LS, fr10 = VIEWPORT_X_PLUS_HWIDTH
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fmov.s @r0+,fr11 ! fr11 = VIEWPORT_Y_PLUS_HHEIGHT
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fmov.s @r0+,fr11 ! LS, fr11 = VIEWPORT_Y_PLUS_HHEIGHT
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nop ! align to even instructions
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nop ! MT, align to even instructions
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.endm
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.endm
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.macro ViewportTransformVertex
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.macro ViewportTransformVertex
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! INVERSE W CALCULATION
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! INVERSE W CALCULATION
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add #28, r5 ! r5 = &vertex->w
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add #28, r5 ! EX, r5 = &vertex->w
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fmov.s @r5,fr0 ! fr0 = vertex->w
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fmov.s @r5,fr0 ! LS, fr0 = vertex->w
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fmul fr0,fr0 ! fr0 = fr0 * fr0
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fmul fr0,fr0 ! FE, fr0 = fr0 * fr0
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add #-24, r5 ! r5 = &vertex->x
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add #-24, r5 ! EX, r5 = &vertex->x
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fsrra fr0 ! fr0 = 1 / sqrt(fr0) -> 1 / vertex->w
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fsrra fr0 ! FE, fr0 = 1 / sqrt(fr0) -> 1 / vertex->w
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! TRANSFORM X
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! TRANSFORM X
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fmov.s @r5,fr4 ! fr4 = vertex->x
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fmov.s @r5,fr4 ! LS, fr4 = vertex->x
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fmov fr10,fr5 ! fr5 = VIEWPORT_X_PLUS_HWIDTH
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fmov fr10,fr5 ! LS, fr5 = VIEWPORT_X_PLUS_HWIDTH
|
||||||
fmul fr8,fr4 ! fr4 = VIEWPORT_HWIDTH * vertex->x
|
fmul fr8,fr4 ! FE, fr4 = VIEWPORT_HWIDTH * vertex->x
|
||||||
fmac fr0,fr4,fr5 ! fr5 = fr0 * fr4 + fr5 -- (X * F * hwidth) + x_plus_hwidth
|
fmac fr0,fr4,fr5 ! FE, fr5 = fr0 * fr4 + fr5 -- (X * F * hwidth) + x_plus_hwidth
|
||||||
fmov.s fr5,@r5 ! vertex->x = fr5
|
fmov.s fr5,@r5 ! LS, vertex->x = fr5
|
||||||
add #4, r5 ! r5 = &vertex->y
|
add #4, r5 ! EX, r5 = &vertex->y
|
||||||
|
|
||||||
! TRANSFORM Y
|
! TRANSFORM Y
|
||||||
fmov.s @r5,fr4 ! fr4 = vertex->y
|
fmov.s @r5,fr4 ! LS, fr4 = vertex->y
|
||||||
fmov fr11,fr5 ! fr5 = VIEWPORT_Y_PLUS_HHEIGHT
|
fmov fr11,fr5 ! LS, fr5 = VIEWPORT_Y_PLUS_HHEIGHT
|
||||||
fmul fr9,fr4 ! fr4 = VIEWPORT_HHEIGHT * vertex->y
|
fmul fr9,fr4 ! FE, fr4 = VIEWPORT_HHEIGHT * vertex->y
|
||||||
fmac fr0,fr4,fr5 ! fr5 = fr0 * fr4 + fr5 -- (Y * F * hheight) + y_plus_hheight
|
fmac fr0,fr4,fr5 ! FE, fr5 = fr0 * fr4 + fr5 -- (Y * F * hheight) + y_plus_hheight
|
||||||
fmov.s fr5,@r5 ! vertex->y = fr5
|
fmov.s fr5,@r5 ! LS, vertex->y = fr5
|
||||||
add #4, r5 ! r5 = &vertex->z
|
add #4, r5 ! EX, r5 = &vertex->z
|
||||||
|
|
||||||
! ASSIGN Z
|
! ASSIGN Z
|
||||||
fmov.s fr0,@r5 ! vertex->z = fr0
|
fmov.s fr0,@r5 ! LS, vertex->z = fr0
|
||||||
add #20, r5 ! r5 += 20 (points to start of next vertex)
|
add #20, r5 ! EX, r5 += 20 (points to start of next vertex)
|
||||||
.endm
|
.endm
|
||||||
Loading…
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Reference in New Issue
Block a user